Merge commit '685021f75fc48afaf6de76280a601316cde827c2' into toradex_5.4-2.1.x-imx

164 files changed, 1798 insertions, 720 deletions

diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c
index 7a265c2171c0..cc4b509bad94 100644
--- a/drivers/acpi/acpi_dbg.c
+++ b/drivers/acpi/acpi_dbg.c
@@ -749,6 +749,9 @@ int __init acpi_aml_init(void)
 {
 	int ret;
 
+	if (acpi_disabled)
+		return -ENODEV;
+
 	/* Initialize AML IO interface */
 	mutex_init(&acpi_aml_io.lock);
 	init_waitqueue_head(&acpi_aml_io.wait);
diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c
index 8596a106a933..91d0b0fc392b 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -223,9 +223,9 @@ static int __init extlog_init(void)
 	u64 cap;
 	int rc;
 
-	rdmsrl(MSR_IA32_MCG_CAP, cap);
-
-	if (!(cap & MCG_ELOG_P) || !extlog_get_l1addr())
+	if (rdmsrl_safe(MSR_IA32_MCG_CAP, &cap) ||
+	    !(cap & MCG_ELOG_P) ||
+	    !extlog_get_l1addr())
 		return -ENODEV;
 
 	if (edac_get_report_status() == EDAC_REPORTING_FORCE) {
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 985afc62da82..690bfe67e643 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -136,6 +136,7 @@ struct acpi_button {
 	int last_state;
 	ktime_t last_time;
 	bool suspended;
+	bool lid_state_initialized;
 };
 
 static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
@@ -391,6 +392,8 @@ static int acpi_lid_update_state(struct acpi_device *device,
 
 static void acpi_lid_initialize_state(struct acpi_device *device)
 {
+	struct acpi_button *button = acpi_driver_data(device);
+
 	switch (lid_init_state) {
 	case ACPI_BUTTON_LID_INIT_OPEN:
 		(void)acpi_lid_notify_state(device, 1);
@@ -402,13 +405,14 @@ static void acpi_lid_initialize_state(struct acpi_device *device)
 	default:
 		break;
 	}
+
+	button->lid_state_initialized = true;
 }
 
 static void acpi_button_notify(struct acpi_device *device, u32 event)
 {
 	struct acpi_button *button = acpi_driver_data(device);
 	struct input_dev *input;
-	int users;
 
 	switch (event) {
 	case ACPI_FIXED_HARDWARE_EVENT:
@@ -417,10 +421,7 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
 	case ACPI_BUTTON_NOTIFY_STATUS:
 		input = button->input;
 		if (button->type == ACPI_BUTTON_TYPE_LID) {
-			mutex_lock(&button->input->mutex);
-			users = button->input->users;
-			mutex_unlock(&button->input->mutex);
-			if (users)
+			if (button->lid_state_initialized)
 				acpi_lid_update_state(device, true);
 		} else {
 			int keycode;
@@ -465,7 +466,7 @@ static int acpi_button_resume(struct device *dev)
 	struct acpi_button *button = acpi_driver_data(device);
 
 	button->suspended = false;
-	if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users) {
+	if (button->type == ACPI_BUTTON_TYPE_LID) {
 		button->last_state = !!acpi_lid_evaluate_state(device);
 		button->last_time = ktime_get();
 		acpi_lid_initialize_state(device);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 1ec55345252b..c64001e789ed 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1968,20 +1968,16 @@ bool acpi_ec_dispatch_gpe(void)
 	if (acpi_any_gpe_status_set(first_ec->gpe))
 		return true;
 
-	if (ec_no_wakeup)
-		return false;
-
 	/*
 	 * Dispatch the EC GPE in-band, but do not report wakeup in any case
 	 * to allow the caller to process events properly after that.
 	 */
 	ret = acpi_dispatch_gpe(NULL, first_ec->gpe);
-	if (ret == ACPI_INTERRUPT_HANDLED) {
+	if (ret == ACPI_INTERRUPT_HANDLED)
 		pm_pr_dbg("EC GPE dispatched\n");
 
-		/* Flush the event and query workqueues. */
-		acpi_ec_flush_work();
-	}
+	/* Flush the event and query workqueues. */
+	acpi_ec_flush_work();
 
 	return false;
 }
diff --git a/drivers/acpi/hmat/hmat.c b/drivers/acpi/hmat/hmat.c
index 8b0de8a3c647..0f1c939b7e90 100644
--- a/drivers/acpi/hmat/hmat.c
+++ b/drivers/acpi/hmat/hmat.c
@@ -403,7 +403,8 @@ static int __init hmat_parse_proximity_domain(union acpi_subtable_headers *heade
 		pr_info("HMAT: Memory Flags:%04x Processor Domain:%d Memory Domain:%d\n",
 			p->flags, p->processor_PD, p->memory_PD);
 
-	if (p->flags & ACPI_HMAT_MEMORY_PD_VALID && hmat_revision == 1) {
+	if ((hmat_revision == 1 && p->flags & ACPI_HMAT_MEMORY_PD_VALID) ||
+	    hmat_revision > 1) {
 		target = find_mem_target(p->memory_PD);
 		if (!target) {
 			pr_debug("HMAT: Memory Domain missing from SRAT\n");
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 12d980aafc5f..9d78f29cf996 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1553,7 +1553,7 @@ static ssize_t format1_show(struct device *dev,
 					le16_to_cpu(nfit_dcr->dcr->code));
 			break;
 		}
-		if (rc != ENXIO)
+		if (rc != -ENXIO)
 			break;
 	}
 	mutex_unlock(&acpi_desc->init_mutex);
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index eadbf90e65d1..85e01752fbe4 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -31,7 +31,7 @@ int acpi_numa __initdata;
 
 int pxm_to_node(int pxm)
 {
-	if (pxm < 0)
+	if (pxm < 0 || pxm >= MAX_PXM_DOMAINS || numa_off)
 		return NUMA_NO_NODE;
 	return pxm_to_node_map[pxm];
 }
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 5bcb4c01ec5f..55af78b55c51 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -282,6 +282,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
 		},
 	},
+	/* https://bugs.launchpad.net/bugs/1894667 */
+	{
+	 .callback = video_detect_force_video,
+	 .ident = "HP 635 Notebook",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
+		},
+	},
 
 	/* Non win8 machines which need native backlight nevertheless */
 	{
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 18b147c182b9..0514aa7e80e3 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -2100,7 +2100,7 @@ static int nv_swncq_sdbfis(struct ata_port *ap)
 	pp->dhfis_bits &= ~done_mask;
 	pp->dmafis_bits &= ~done_mask;
 	pp->sdbfis_bits |= done_mask;
-	ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
+	ata_qc_complete_multiple(ap, ata_qc_get_active(ap) ^ done_mask);
 
 	if (!ap->qc_active) {
 		DPRINTK("over\n");
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 8a973958d11a..4837e7ac7b77 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -454,8 +454,7 @@ static void __device_link_del(struct kref *kref)
 	dev_dbg(link->consumer, "Dropping the link to %s\n",
 		dev_name(link->supplier));
 
-	if (link->flags & DL_FLAG_PM_RUNTIME)
-		pm_runtime_drop_link(link->consumer);
+	pm_runtime_drop_link(link);
 
 	list_del_rcu(&link->s_node);
 	list_del_rcu(&link->c_node);
@@ -469,8 +468,7 @@ static void __device_link_del(struct kref *kref)
 	dev_info(link->consumer, "Dropping the link to %s\n",
 		 dev_name(link->supplier));
 
-	if (link->flags & DL_FLAG_PM_RUNTIME)
-		pm_runtime_drop_link(link->consumer);
+	pm_runtime_drop_link(link);
 
 	list_del(&link->s_node);
 	list_del(&link->c_node);
@@ -3442,6 +3440,7 @@ static inline bool fwnode_is_primary(struct fwnode_handle *fwnode)
  */
 void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode)
 {
+	struct device *parent = dev->parent;
 	struct fwnode_handle *fn = dev->fwnode;
 
 	if (fwnode) {
@@ -3456,7 +3455,8 @@ void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode)
 	} else {
 		if (fwnode_is_primary(fn)) {
 			dev->fwnode = fn->secondary;
-			fn->secondary = NULL;
+			if (!(parent && fn == parent->fwnode))
+				fn->secondary = ERR_PTR(-ENODEV);
 		} else {
 			dev->fwnode = NULL;
 		}
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index c9b308229335..841e8ab05a7f 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -1105,6 +1105,8 @@ static void __device_release_driver(struct device *dev, struct device *parent)
 
 	drv = dev->driver;
 	if (drv) {
+		pm_runtime_get_sync(dev);
+
 		while (device_links_busy(dev)) {
 			__device_driver_unlock(dev, parent);
 
@@ -1116,13 +1118,12 @@ static void __device_release_driver(struct device *dev, struct device *parent)
 			 * have released the driver successfully while this one
 			 * was waiting, so check for that.
 			 */
-			if (dev->driver != drv)
+			if (dev->driver != drv) {
+				pm_runtime_put(dev);
 				return;
+			}
 		}
 
-		pm_runtime_get_sync(dev);
-		pm_runtime_clean_up_links(dev);
-
 		driver_sysfs_remove(dev);
 
 		if (dev->bus)
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 48616f358854..137a7ba053d7 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -291,8 +291,7 @@ static int rpm_get_suppliers(struct device *dev)
 				device_links_read_lock_held()) {
 		int retval;
 
-		if (!(link->flags & DL_FLAG_PM_RUNTIME) ||
-		    READ_ONCE(link->status) == DL_STATE_SUPPLIER_UNBIND)
+		if (!(link->flags & DL_FLAG_PM_RUNTIME))
 			continue;
 
 		retval = pm_runtime_get_sync(link->supplier);
@@ -312,8 +311,6 @@ static void rpm_put_suppliers(struct device *dev)
 
 	list_for_each_entry_rcu(link, &dev->links.suppliers, c_node,
 				device_links_read_lock_held()) {
-		if (READ_ONCE(link->status) == DL_STATE_SUPPLIER_UNBIND)
-			continue;
 
 		while (refcount_dec_not_one(&link->rpm_active))
 			pm_runtime_put(link->supplier);
@@ -1619,42 +1616,6 @@ void pm_runtime_remove(struct device *dev)
 }
 
 /**
- * pm_runtime_clean_up_links - Prepare links to consumers for driver removal.
- * @dev: Device whose driver is going to be removed.
- *
- * Check links from this device to any consumers and if any of them have active
- * runtime PM references to the device, drop the usage counter of the device
- * (as many times as needed).
- *
- * Links with the DL_FLAG_MANAGED flag unset are ignored.
- *
- * Since the device is guaranteed to be runtime-active at the point this is
- * called, nothing else needs to be done here.
- *
- * Moreover, this is called after device_links_busy() has returned 'false', so
- * the status of each link is guaranteed to be DL_STATE_SUPPLIER_UNBIND and
- * therefore rpm_active can't be manipulated concurrently.
- */
-void pm_runtime_clean_up_links(struct device *dev)
-{
-	struct device_link *link;
-	int idx;
-
-	idx = device_links_read_lock();
-
-	list_for_each_entry_rcu(link, &dev->links.consumers, s_node,
-				device_links_read_lock_held()) {
-		if (!(link->flags & DL_FLAG_MANAGED))
-			continue;
-
-		while (refcount_dec_not_one(&link->rpm_active))
-			pm_runtime_put_noidle(dev);
-	}
-
-	device_links_read_unlock(idx);
-}
-
-/**
  * pm_runtime_get_suppliers - Resume and reference-count supplier devices.
  * @dev: Consumer device.
  */
@@ -1705,7 +1666,7 @@ void pm_runtime_new_link(struct device *dev)
 	spin_unlock_irq(&dev->power.lock);
 }
 
-void pm_runtime_drop_link(struct device *dev)
+static void pm_runtime_drop_link_count(struct device *dev)
 {
 	spin_lock_irq(&dev->power.lock);
 	WARN_ON(dev->power.links_count == 0);
@@ -1713,6 +1674,25 @@ void pm_runtime_drop_link(struct device *dev)
 	spin_unlock_irq(&dev->power.lock);
 }
 
+/**
+ * pm_runtime_drop_link - Prepare for device link removal.
+ * @link: Device link going away.
+ *
+ * Drop the link count of the consumer end of @link and decrement the supplier
+ * device's runtime PM usage counter as many times as needed to drop all of the
+ * PM runtime reference to it from the consumer.
+ */
+void pm_runtime_drop_link(struct device_link *link)
+{
+	if (!(link->flags & DL_FLAG_PM_RUNTIME))
+		return;
+
+	pm_runtime_drop_link_count(link->consumer);
+
+	while (refcount_dec_not_one(&link->rpm_active))
+		pm_runtime_put(link->supplier);
+}
+
 static bool pm_runtime_need_not_resume(struct device *dev)
 {
 	return atomic_read(&dev->power.usage_count) <= 1 &&
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 7c577cabb9c3..742f8160b6e2 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -787,9 +787,9 @@ static void recv_work(struct work_struct *work)
 
 		blk_mq_complete_request(blk_mq_rq_from_pdu(cmd));
 	}
+	nbd_config_put(nbd);
 	atomic_dec(&config->recv_threads);
 	wake_up(&config->recv_wq);
-	nbd_config_put(nbd);
 	kfree(args);
 }
 
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 3666afa639d1..b18f0162cb9c 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -202,7 +202,7 @@ static inline void shrink_free_pagepool(struct xen_blkif_ring *ring, int num)
 
 #define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page)))
 
-static int do_block_io_op(struct xen_blkif_ring *ring);
+static int do_block_io_op(struct xen_blkif_ring *ring, unsigned int *eoi_flags);
 static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
 				struct blkif_request *req,
 				struct pending_req *pending_req);
@@ -615,6 +615,8 @@ int xen_blkif_schedule(void *arg)
 	struct xen_vbd *vbd = &blkif->vbd;
 	unsigned long timeout;
 	int ret;
+	bool do_eoi;
+	unsigned int eoi_flags = XEN_EOI_FLAG_SPURIOUS;
 
 	set_freezable();
 	while (!kthread_should_stop()) {
@@ -639,16 +641,23 @@ int xen_blkif_schedule(void *arg)
 		if (timeout == 0)
 			goto purge_gnt_list;
 
+		do_eoi = ring->waiting_reqs;
+
 		ring->waiting_reqs = 0;
 		smp_mb(); /* clear flag *before* checking for work */
 
-		ret = do_block_io_op(ring);
+		ret = do_block_io_op(ring, &eoi_flags);
 		if (ret > 0)
 			ring->waiting_reqs = 1;
 		if (ret == -EACCES)
 			wait_event_interruptible(ring->shutdown_wq,
 						 kthread_should_stop());
 
+		if (do_eoi && !ring->waiting_reqs) {
+			xen_irq_lateeoi(ring->irq, eoi_flags);
+			eoi_flags |= XEN_EOI_FLAG_SPURIOUS;
+		}
+
 purge_gnt_list:
 		if (blkif->vbd.feature_gnt_persistent &&
 		    time_after(jiffies, ring->next_lru)) {
@@ -1121,7 +1130,7 @@ static void end_block_io_op(struct bio *bio)
  * and transmute  it to the block API to hand it over to the proper block disk.
  */
 static int
-__do_block_io_op(struct xen_blkif_ring *ring)
+__do_block_io_op(struct xen_blkif_ring *ring, unsigned int *eoi_flags)
 {
 	union blkif_back_rings *blk_rings = &ring->blk_rings;
 	struct blkif_request req;
@@ -1144,6 +1153,9 @@ __do_block_io_op(struct xen_blkif_ring *ring)
 		if (RING_REQUEST_CONS_OVERFLOW(&blk_rings->common, rc))
 			break;
 
+		/* We've seen a request, so clear spurious eoi flag. */
+		*eoi_flags &= ~XEN_EOI_FLAG_SPURIOUS;
+
 		if (kthread_should_stop()) {
 			more_to_do = 1;
 			break;
@@ -1202,13 +1214,13 @@ done:
 }
 
 static int
-do_block_io_op(struct xen_blkif_ring *ring)
+do_block_io_op(struct xen_blkif_ring *ring, unsigned int *eoi_flags)
 {
 	union blkif_back_rings *blk_rings = &ring->blk_rings;
 	int more_to_do;
 
 	do {
-		more_to_do = __do_block_io_op(ring);
+		more_to_do = __do_block_io_op(ring, eoi_flags);
 		if (more_to_do)
 			break;
 
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index c4cd68116e7f..192ca58cc3c7 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -229,9 +229,8 @@ static int xen_blkif_map(struct xen_blkif_ring *ring, grant_ref_t *gref,
 		BUG();
 	}
 
-	err = bind_interdomain_evtchn_to_irqhandler(blkif->domid, evtchn,
-						    xen_blkif_be_int, 0,
-						    "blkif-backend", ring);
+	err = bind_interdomain_evtchn_to_irqhandler_lateeoi(blkif->domid,
+			evtchn, xen_blkif_be_int, 0, "blkif-backend", ring);
 	if (err < 0) {
 		xenbus_unmap_ring_vfree(blkif->be->dev, ring->blk_ring);
 		ring->blk_rings.common.sring = NULL;
diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c
index 04d08df4ce32..a761e5a89769 100644
--- a/drivers/bus/fsl-mc/mc-io.c
+++ b/drivers/bus/fsl-mc/mc-io.c
@@ -129,7 +129,12 @@ error_destroy_mc_io:
  */
 void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
 {
-	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+	struct fsl_mc_device *dpmcp_dev;
+
+	if (!mc_io)
+		return;
+
+	dpmcp_dev = mc_io->dpmcp_dev;
 
 	if (dpmcp_dev)
 		fsl_mc_io_unset_dpmcp(mc_io);
diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c
index 423a99b9f10c..8d0dea188a28 100644
--- a/drivers/clk/ti/clockdomain.c
+++ b/drivers/clk/ti/clockdomain.c
@@ -146,10 +146,12 @@ static void __init of_ti_clockdomain_setup(struct device_node *node)
 		if (!omap2_clk_is_hw_omap(clk_hw)) {
 			pr_warn("can't setup clkdm for basic clk %s\n",
 				__clk_get_name(clk));
+			clk_put(clk);
 			continue;
 		}
 		to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name;
 		omap2_init_clk_clkdm(clk_hw);
+		clk_put(clk);
 	}
 }
 
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index d6f7df33ab8c..4195834a4591 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -688,7 +688,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		cpumask_copy(policy->cpus, topology_core_cpumask(cpu));
 	}
 
-	if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) {
+	if (check_amd_hwpstate_cpu(cpu) && boot_cpu_data.x86 < 0x19 &&
+	    !acpi_pstate_strict) {
 		cpumask_clear(policy->cpus);
 		cpumask_set_cpu(cpu, policy->cpus);
 		cpumask_copy(data->freqdomain_cpus,
diff --git a/drivers/cpufreq/sti-cpufreq.c b/drivers/cpufreq/sti-cpufreq.c
index 8f16bbb164b8..2855b7878a20 100644
--- a/drivers/cpufreq/sti-cpufreq.c
+++ b/drivers/cpufreq/sti-cpufreq.c
@@ -141,7 +141,8 @@ static const struct reg_field sti_stih407_dvfs_regfields[DVFS_MAX_REGFIELDS] = {
 static const struct reg_field *sti_cpufreq_match(void)
 {
 	if (of_machine_is_compatible("st,stih407") ||
-	    of_machine_is_compatible("st,stih410"))
+	    of_machine_is_compatible("st,stih410") ||
+	    of_machine_is_compatible("st,stih418"))
 		return sti_stih407_dvfs_regfields;
 
 	return NULL;
@@ -258,7 +259,8 @@ static int sti_cpufreq_init(void)
 	int ret;
 
 	if ((!of_machine_is_compatible("st,stih407")) &&
-		(!of_machine_is_compatible("st,stih410")))
+		(!of_machine_is_compatible("st,stih410")) &&
+		(!of_machine_is_compatible("st,stih418")))
 		return -ENODEV;
 
 	ddata.cpu = get_cpu_device(0);
diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.c b/drivers/crypto/chelsio/chtls/chtls_cm.c
index e2c64c943cfc..385bd4dc6686 100644
--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -174,7 +174,7 @@ static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb, int len)
 {
 	if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
 		__skb_trim(skb, 0);
-		refcount_add(2, &skb->users);
+		refcount_inc(&skb->users);
 	} else {
 		skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
 	}
diff --git a/drivers/crypto/chelsio/chtls/chtls_hw.c b/drivers/crypto/chelsio/chtls/chtls_hw.c
index a217fe72602d..3ef723e08953 100644
--- a/drivers/crypto/chelsio/chtls/chtls_hw.c
+++ b/drivers/crypto/chelsio/chtls/chtls_hw.c
@@ -357,6 +357,9 @@ int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 optname)
 	if (ret)
 		goto out_notcb;
 
+	if (unlikely(csk_flag(sk, CSK_ABORT_SHUTDOWN)))
+		goto out_notcb;
+
 	set_wr_txq(skb, CPL_PRIORITY_DATA, csk->tlshws.txqid);
 	csk->wr_credits -= DIV_ROUND_UP(len, 16);
 	csk->wr_unacked += DIV_ROUND_UP(len, 16);
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index 0ecb724b394f..e27043427653 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -639,11 +639,11 @@ static enum dma_status jz4780_dma_tx_status(struct dma_chan *chan,
 	unsigned long flags;
 	unsigned long residue = 0;
 
+	spin_lock_irqsave(&jzchan->vchan.lock, flags);
+
 	status = dma_cookie_status(chan, cookie, txstate);
 	if ((status == DMA_COMPLETE) || (txstate == NULL))
-		return status;
-
-	spin_lock_irqsave(&jzchan->vchan.lock, flags);
+		goto out_unlock_irqrestore;
 
 	vdesc = vchan_find_desc(&jzchan->vchan, cookie);
 	if (vdesc) {
@@ -660,6 +660,7 @@ static enum dma_status jz4780_dma_tx_status(struct dma_chan *chan,
 	    && jzchan->desc->status & (JZ_DMA_DCS_AR | JZ_DMA_DCS_HLT))
 		status = DMA_ERROR;
 
+out_unlock_irqrestore:
 	spin_unlock_irqrestore(&jzchan->vchan.lock, flags);
 	return status;
 }
diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c
index d1c997599390..5f5252752644 100644
--- a/drivers/extcon/extcon-ptn5150.c
+++ b/drivers/extcon/extcon-ptn5150.c
@@ -127,7 +127,7 @@ static void ptn5150_irq_work(struct work_struct *work)
 			case PTN5150_DFP_ATTACHED:
 				extcon_set_state_sync(info->edev,
 						EXTCON_USB_HOST, false);
-				gpiod_set_value(info->vbus_gpiod, 0);
+				gpiod_set_value_cansleep(info->vbus_gpiod, 0);
 				extcon_set_state_sync(info->edev, EXTCON_USB,
 						true);
 				break;
@@ -138,9 +138,9 @@ static void ptn5150_irq_work(struct work_struct *work)
 					PTN5150_REG_CC_VBUS_DETECTION_MASK) >>
 					PTN5150_REG_CC_VBUS_DETECTION_SHIFT);
 				if (vbus)
-					gpiod_set_value(info->vbus_gpiod, 0);
+					gpiod_set_value_cansleep(info->vbus_gpiod, 0);
 				else
-					gpiod_set_value(info->vbus_gpiod, 1);
+					gpiod_set_value_cansleep(info->vbus_gpiod, 1);
 
 				extcon_set_state_sync(info->edev,
 						EXTCON_USB_HOST, true);
@@ -156,7 +156,7 @@ static void ptn5150_irq_work(struct work_struct *work)
 					EXTCON_USB_HOST, false);
 			extcon_set_state_sync(info->edev,
 					EXTCON_USB, false);
-			gpiod_set_value(info->vbus_gpiod, 0);
+			gpiod_set_value_cansleep(info->vbus_gpiod, 0);
 		}
 	}
 
diff --git a/drivers/firmware/arm_scmi/base.c b/drivers/firmware/arm_scmi/base.c
index f804e8af6521..f986ee8919f0 100644
--- a/drivers/firmware/arm_scmi/base.c
+++ b/drivers/firmware/arm_scmi/base.c
@@ -173,6 +173,8 @@ static int scmi_base_implementation_list_get(const struct scmi_handle *handle,
 			protocols_imp[tot_num_ret + loop] = *(list + loop);
 
 		tot_num_ret += loop_num_ret;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 	} while (loop_num_ret);
 
 	scmi_xfer_put(handle, t);
diff --git a/drivers/firmware/arm_scmi/clock.c b/drivers/firmware/arm_scmi/clock.c
index 32526a793f3a..38400a8d0ca8 100644
--- a/drivers/firmware/arm_scmi/clock.c
+++ b/drivers/firmware/arm_scmi/clock.c
@@ -177,6 +177,8 @@ scmi_clock_describe_rates_get(const struct scmi_handle *handle, u32 clk_id,
 		}
 
 		tot_rate_cnt += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 5237c2ff79fe..9a680b9af9e5 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -103,6 +103,8 @@ int scmi_do_xfer_with_response(const struct scmi_handle *h,
 			       struct scmi_xfer *xfer);
 int scmi_xfer_get_init(const struct scmi_handle *h, u8 msg_id, u8 prot_id,
 		       size_t tx_size, size_t rx_size, struct scmi_xfer **p);
+void scmi_reset_rx_to_maxsz(const struct scmi_handle *handle,
+			    struct scmi_xfer *xfer);
 int scmi_handle_put(const struct scmi_handle *handle);
 struct scmi_handle *scmi_handle_get(struct device *dev);
 void scmi_set_handle(struct scmi_device *scmi_dev);
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3eb0382491ce..11078199abed 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -481,6 +481,14 @@ int scmi_do_xfer(const struct scmi_handle *handle, struct scmi_xfer *xfer)
 	return ret;
 }
 
+void scmi_reset_rx_to_maxsz(const struct scmi_handle *handle,
+			    struct scmi_xfer *xfer)
+{
+	struct scmi_info *info = handle_to_scmi_info(handle);
+
+	xfer->rx.len = info->desc->max_msg_size;
+}
+
 #define SCMI_MAX_RESPONSE_TIMEOUT	(2 * MSEC_PER_SEC)
 
 /**
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 601af4edad5e..129a2887e964 100644
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -281,6 +281,8 @@ scmi_perf_describe_levels_get(const struct scmi_handle *handle, u32 domain,
 		}
 
 		tot_opp_cnt += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
diff --git a/drivers/firmware/arm_scmi/reset.c b/drivers/firmware/arm_scmi/reset.c
index ab42c21c5517..6d223f345b6c 100644
--- a/drivers/firmware/arm_scmi/reset.c
+++ b/drivers/firmware/arm_scmi/reset.c
@@ -35,9 +35,7 @@ struct scmi_msg_reset_domain_reset {
 #define EXPLICIT_RESET_ASSERT	BIT(1)
 #define ASYNCHRONOUS_RESET	BIT(2)
 	__le32 reset_state;
-#define ARCH_RESET_TYPE		BIT(31)
-#define COLD_RESET_STATE	BIT(0)
-#define ARCH_COLD_RESET		(ARCH_RESET_TYPE | COLD_RESET_STATE)
+#define ARCH_COLD_RESET		0
 };
 
 struct reset_dom_info {
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c
index a400ea805fc2..931208bc48f1 100644
--- a/drivers/firmware/arm_scmi/sensors.c
+++ b/drivers/firmware/arm_scmi/sensors.c
@@ -154,6 +154,8 @@ static int scmi_sensor_description_get(const struct scmi_handle *handle,
 		}
 
 		desc_index += num_returned;
+
+		scmi_reset_rx_to_maxsz(handle, t);
 		/*
 		 * check for both returned and remaining to avoid infinite
 		 * loop due to buggy firmware
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4105fbf57167..29141bff4b57 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3890,7 +3890,7 @@ retry:	/* Rest of adevs pre asic reset from XGMI hive. */
 
 		amdgpu_device_lock_adev(tmp_adev, false);
 		r = amdgpu_device_pre_asic_reset(tmp_adev,
-						 NULL,
+						 (tmp_adev == adev) ? job : NULL,
 						 &need_full_reset);
 		/*TODO Should we stop ?*/
 		if (r) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index fa2c0f29ad4d..e8e172010416 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1011,6 +1011,7 @@ static const struct pci_device_id pciidlist[] = {
 	{0x1002, 0x7319, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI10},
 	{0x1002, 0x731A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI10},
 	{0x1002, 0x731B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI10},
+	{0x1002, 0x731E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI10},
 	{0x1002, 0x731F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI10},
 	/* Navi14 */
 	{0x1002, 0x7340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_NAVI14},
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 5fa5158d18ee..9d61d1b7a569 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -561,6 +561,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 	struct ww_acquire_ctx ticket;
 	struct list_head list, duplicates;
 	uint64_t va_flags;
+	uint64_t vm_size;
 	int r = 0;
 
 	if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
@@ -581,6 +582,15 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 
 	args->va_address &= AMDGPU_GMC_HOLE_MASK;
 
+	vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
+	vm_size -= AMDGPU_VA_RESERVED_SIZE;
+	if (args->va_address + args->map_size > vm_size) {
+		dev_dbg(&dev->pdev->dev,
+			"va_address 0x%llx is in top reserved area 0x%llx\n",
+			args->va_address + args->map_size, vm_size);
+		return -EINVAL;
+	}
+
 	if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
 		dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
 			args->flags);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 2eda3a8c330d..4a64825b53cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -105,8 +105,8 @@ struct amdgpu_bo_list_entry;
 #define AMDGPU_MMHUB_0				1
 #define AMDGPU_MMHUB_1				2
 
-/* hardcode that limit for now */
-#define AMDGPU_VA_RESERVED_SIZE			(1ULL << 20)
+/* Reserve 2MB at top/bottom of address space for kernel use */
+#define AMDGPU_VA_RESERVED_SIZE			(2ULL << 20)
 
 /* max vmids dedicated for process */
 #define AMDGPU_VM_MAX_RESERVED_VMID	1
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
index 72e4d61ac752..ad0593342333 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_v10.c
@@ -58,8 +58,9 @@ static int update_qpd_v10(struct device_queue_manager *dqm,
 	/* check if sh_mem_config register already configured */
 	if (qpd->sh_mem_config == 0) {
 		qpd->sh_mem_config =
-				SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
-					SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT;
+			(SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
+				SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT) |
+			(3 << SH_MEM_CONFIG__INITIAL_INST_PREFETCH__SHIFT);
 #if 0
 		/* TODO:
 		 *    This shouldn't be an issue with Navi10.  Verify.
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 7c5808503173..d2dd387c95d8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3956,6 +3956,13 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector)
 	struct amdgpu_device *adev = connector->dev->dev_private;
 	struct amdgpu_display_manager *dm = &adev->dm;
 
+	/*
+	 * Call only if mst_mgr was iniitalized before since it's not done
+	 * for all connector types.
+	 */
+	if (aconnector->mst_mgr.dev)
+		drm_dp_mst_topology_mgr_destroy(&aconnector->mst_mgr);
+
 #if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\
 	defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)
 
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 3efee7b3378a..47cefc05fd3f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2268,7 +2268,7 @@ enum dc_status dc_link_validate_mode_timing(
 	/* A hack to avoid failing any modes for EDID override feature on
 	 * topology change such as lower quality cable for DP or different dongle
 	 */
-	if (link->remote_sinks[0])
+	if (link->remote_sinks[0] && link->remote_sinks[0]->sink_signal == SIGNAL_TYPE_VIRTUAL)
 		return DC_OK;
 
 	/* Passive Dongle */
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
index ddf66046616d..6718777c826d 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
@@ -898,10 +898,10 @@ void enc1_stream_encoder_dp_blank(
 	 */
 	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2);
 	/* Larger delay to wait until VBLANK - use max retry of
-	 * 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode +
+	 * 10us*10200=102ms. This covers 100.0ms of minimum 10 Hz mode +
 	 * a little more because we may not trust delay accuracy.
 	 */
-	max_retries = DP_BLANK_MAX_RETRY * 250;
+	max_retries = DP_BLANK_MAX_RETRY * 501;
 
 	/* disable DP stream */
 	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
index f8f85490e77e..8a6fb58d0199 100644
--- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
+++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_base.c
@@ -63,13 +63,13 @@ enum gpio_result dal_gpio_open_ex(
 	enum gpio_mode mode)
 {
 	if (gpio->pin) {
-		ASSERT_CRITICAL(false);
+		BREAK_TO_DEBUGGER();
 		return GPIO_RESULT_ALREADY_OPENED;
 	}
 
 	// No action if allocation failed during gpio construct
 	if (!gpio->hw_container.ddc) {
-		ASSERT_CRITICAL(false);
+		BREAK_TO_DEBUGGER();
 		return GPIO_RESULT_NON_SPECIFIC_ERROR;
 	}
 	gpio->mode = mode;
diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h
index 30ec80ac6fc8..8da322582b68 100644
--- a/drivers/gpu/drm/amd/display/dc/os_types.h
+++ b/drivers/gpu/drm/amd/display/dc/os_types.h
@@ -57,7 +57,7 @@
  * general debug capabilities
  *
  */
-#if defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB)
+#if defined(CONFIG_DEBUG_KERNEL_DC) && (defined(CONFIG_HAVE_KGDB) || defined(CONFIG_KGDB))
 #define ASSERT_CRITICAL(expr) do {	\
 	if (WARN_ON(!(expr))) { \
 		kgdb_breakpoint(); \
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index 1b55f037ba4a..35e6cbe805eb 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -2864,7 +2864,7 @@ static int smu7_vblank_too_short(struct pp_hwmgr *hwmgr,
 		if (hwmgr->is_kicker)
 			switch_limit_us = data->is_memory_gddr5 ? 450 : 150;
 		else
-			switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
+			switch_limit_us = data->is_memory_gddr5 ? 200 : 150;
 		break;
 	case CHIP_VEGAM:
 		switch_limit_us = 30;
diff --git a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
index 6e81e5db57f2..b050fd1f3d20 100644
--- a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
+++ b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
@@ -295,8 +295,12 @@ static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
 				       const struct i2c_device_id *id)
 {
 	struct device *dev = &stdp4028_i2c->dev;
+	int ret;
+
+	ret = ge_b850v3_lvds_init(dev);
 
-	ge_b850v3_lvds_init(dev);
+	if (ret)
+		return ret;
 
 	ge_b850v3_lvds_ptr->stdp4028_i2c = stdp4028_i2c;
 	i2c_set_clientdata(stdp4028_i2c, ge_b850v3_lvds_ptr);
@@ -354,8 +358,12 @@ static int stdp2690_ge_b850v3_fw_probe(struct i2c_client *stdp2690_i2c,
 				       const struct i2c_device_id *id)
 {
 	struct device *dev = &stdp2690_i2c->dev;
+	int ret;
+
+	ret = ge_b850v3_lvds_init(dev);
 
-	ge_b850v3_lvds_init(dev);
+	if (ret)
+		return ret;
 
 	ge_b850v3_lvds_ptr->stdp2690_i2c = stdp2690_i2c;
 	i2c_set_clientdata(stdp2690_i2c, ge_b850v3_lvds_ptr);
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 675442bfc1bd..77384c49fb8d 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -365,7 +365,6 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi,
 	if (lpm)
 		val |= CMD_MODE_ALL_LP;
 
-	dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS);
 	dsi_write(dsi, DSI_CMD_MODE_CFG, val);
 }
 
@@ -541,16 +540,22 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
 static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi,
 				 unsigned long mode_flags)
 {
+	u32 val;
+
 	dsi_write(dsi, DSI_PWR_UP, RESET);
 
 	if (mode_flags & MIPI_DSI_MODE_VIDEO) {
 		dsi_write(dsi, DSI_MODE_CFG, ENABLE_VIDEO_MODE);
 		dw_mipi_dsi_video_mode_config(dsi);
-		dsi_write(dsi, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS);
 	} else {
 		dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE);
 	}
 
+	val = PHY_TXREQUESTCLKHS;
+	if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+		val |= AUTO_CLKLANE_CTRL;
+	dsi_write(dsi, DSI_LPCLK_CTRL, val);
+
 	dsi_write(dsi, DSI_PWR_UP, POWERUP);
 }
 
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index c169f0f70f3a..2fa491f82682 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1574,6 +1574,9 @@ static void process_csb(struct intel_engine_cs *engine)
 			if (!inject_preempt_hang(execlists))
 				ring_set_paused(engine, 0);
 
+			/* XXX Magic delay for tgl */
+			ENGINE_POSTING_READ(engine, RING_CONTEXT_STATUS_PTR);
+
 			WRITE_ONCE(execlists->pending[0], NULL);
 			break;
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 89b6112bd66b..126a0eb6e054 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -33,6 +33,8 @@
 #include <uapi/drm/i915_drm.h>
 #include <uapi/drm/drm_fourcc.h>
 
+#include <asm/hypervisor.h>
+
 #include <linux/io-mapping.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
@@ -2197,7 +2199,9 @@ static inline bool intel_vtd_active(void)
 	if (intel_iommu_gfx_mapped)
 		return true;
 #endif
-	return false;
+
+	/* Running as a guest, we assume the host is enforcing VT'd */
+	return !hypervisor_is_type(X86_HYPER_NATIVE);
 }
 
 static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index fe9edbba997c..b9af329eb3a3 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -307,6 +307,8 @@ static int compress_page(struct compress *c,
 
 		if (zlib_deflate(zstream, Z_NO_FLUSH) != Z_OK)
 			return -EIO;
+
+		cond_resched();
 	} while (zstream->avail_in);
 
 	/* Fallback to uncompressed if we increase size? */
@@ -392,6 +394,7 @@ static int compress_page(struct compress *c,
 	if (!i915_memcpy_from_wc(ptr, src, PAGE_SIZE))
 		memcpy(ptr, src, PAGE_SIZE);
 	dst->pages[dst->page_count++] = ptr;
+	cond_resched();
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 9e583f13a9e4..62f8a47fda45 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1124,6 +1124,18 @@ unclaimed_reg_debug(struct intel_uncore *uncore,
 		spin_unlock(&uncore->debug->lock);
 }
 
+#define __vgpu_read(x) \
+static u##x \
+vgpu_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
+	u##x val = __raw_uncore_read##x(uncore, reg); \
+	trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
+	return val; \
+}
+__vgpu_read(8)
+__vgpu_read(16)
+__vgpu_read(32)
+__vgpu_read(64)
+
 #define GEN2_READ_HEADER(x) \
 	u##x val = 0; \
 	assert_rpm_wakelock_held(uncore->rpm);
@@ -1327,6 +1339,16 @@ __gen_reg_write_funcs(gen8);
 #undef GEN6_WRITE_FOOTER
 #undef GEN6_WRITE_HEADER
 
+#define __vgpu_write(x) \
+static void \
+vgpu_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
+	trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
+	__raw_uncore_write##x(uncore, reg, val); \
+}
+__vgpu_write(8)
+__vgpu_write(16)
+__vgpu_write(32)
+
 #define ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, x) \
 do { \
 	(uncore)->funcs.mmio_writeb = x##_write8; \
@@ -1647,7 +1669,10 @@ static void uncore_raw_init(struct intel_uncore *uncore)
 {
 	GEM_BUG_ON(intel_uncore_has_forcewake(uncore));
 
-	if (IS_GEN(uncore->i915, 5)) {
+	if (intel_vgpu_active(uncore->i915)) {
+		ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, vgpu);
+		ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, vgpu);
+	} else if (IS_GEN(uncore->i915, 5)) {
 		ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen5);
 		ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen5);
 	} else {
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 7d39d4949ee7..2dd9fcab464b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -197,7 +197,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 	 * to the caller, instead of a normal nouveau_bo ttm reference. */
 	ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
 	if (ret) {
-		nouveau_bo_ref(NULL, &nvbo);
+		drm_gem_object_release(&nvbo->bo.base);
+		kfree(nvbo);
 		return ret;
 	}
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 824654742a60..0be4668c780b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -112,11 +112,11 @@ nouveau_svmm_bind(struct drm_device *dev, void *data,
 	struct nouveau_cli *cli = nouveau_cli(file_priv);
 	struct drm_nouveau_svm_bind *args = data;
 	unsigned target, cmd, priority;
-	unsigned long addr, end, size;
+	unsigned long addr, end;
 	struct mm_struct *mm;
 
 	args->va_start &= PAGE_MASK;
-	args->va_end &= PAGE_MASK;
+	args->va_end = ALIGN(args->va_end, PAGE_SIZE);
 
 	/* Sanity check arguments */
 	if (args->reserved0 || args->reserved1)
@@ -125,8 +125,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data,
 		return -EINVAL;
 	if (args->va_start >= args->va_end)
 		return -EINVAL;
-	if (!args->npages)
-		return -EINVAL;
 
 	cmd = args->header >> NOUVEAU_SVM_BIND_COMMAND_SHIFT;
 	cmd &= NOUVEAU_SVM_BIND_COMMAND_MASK;
@@ -158,12 +156,6 @@ nouveau_svmm_bind(struct drm_device *dev, void *data,
 	if (args->stride)
 		return -EINVAL;
 
-	size = ((unsigned long)args->npages) << PAGE_SHIFT;
-	if ((args->va_start + size) <= args->va_start)
-		return -EINVAL;
-	if ((args->va_start + size) > args->va_end)
-		return -EINVAL;
-
 	/*
 	 * Ok we are ask to do something sane, for now we only support migrate
 	 * commands but we will add things like memory policy (what to do on
@@ -178,7 +170,7 @@ nouveau_svmm_bind(struct drm_device *dev, void *data,
 		return -EINVAL;
 	}
 
-	for (addr = args->va_start, end = args->va_start + size; addr < end;) {
+	for (addr = args->va_start, end = args->va_end; addr < end;) {
 		struct vm_area_struct *vma;
 		unsigned long next;
 
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index c05e013bb8e3..ac9de37a8280 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -105,14 +105,12 @@ void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping)
 	kref_put(&mapping->refcount, panfrost_gem_mapping_release);
 }
 
-void panfrost_gem_teardown_mappings(struct panfrost_gem_object *bo)
+void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo)
 {
 	struct panfrost_gem_mapping *mapping;
 
-	mutex_lock(&bo->mappings.lock);
 	list_for_each_entry(mapping, &bo->mappings.list, node)
 		panfrost_gem_teardown_mapping(mapping);
-	mutex_unlock(&bo->mappings.lock);
 }
 
 int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_priv)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h
index b3517ff9630c..8088d5fd8480 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.h
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.h
@@ -82,7 +82,7 @@ struct panfrost_gem_mapping *
 panfrost_gem_mapping_get(struct panfrost_gem_object *bo,
 			 struct panfrost_file_priv *priv);
 void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping);
-void panfrost_gem_teardown_mappings(struct panfrost_gem_object *bo);
+void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo);
 
 void panfrost_gem_shrinker_init(struct drm_device *dev);
 void panfrost_gem_shrinker_cleanup(struct drm_device *dev);
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c
index 288e46c40673..1b9f68d8e9aa 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem_shrinker.c
@@ -40,18 +40,26 @@ static bool panfrost_gem_purge(struct drm_gem_object *obj)
 {
 	struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj);
 	struct panfrost_gem_object *bo = to_panfrost_bo(obj);
+	bool ret = false;
 
 	if (atomic_read(&bo->gpu_usecount))
 		return false;
 
-	if (!mutex_trylock(&shmem->pages_lock))
+	if (!mutex_trylock(&bo->mappings.lock))
 		return false;
 
-	panfrost_gem_teardown_mappings(bo);
+	if (!mutex_trylock(&shmem->pages_lock))
+		goto unlock_mappings;
+
+	panfrost_gem_teardown_mappings_locked(bo);
 	drm_gem_shmem_purge_locked(obj);
+	ret = true;
 
 	mutex_unlock(&shmem->pages_lock);
-	return true;
+
+unlock_mappings:
+	mutex_unlock(&bo->mappings.lock);
+	return ret;
 }
 
 static unsigned long
diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c
index ec2a032e07b9..7186ba73d8e1 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c
@@ -407,6 +407,7 @@ int sun4i_frontend_update_formats(struct sun4i_frontend *frontend,
 	struct drm_framebuffer *fb = state->fb;
 	const struct drm_format_info *format = fb->format;
 	uint64_t modifier = fb->modifier;
+	unsigned int ch1_phase_idx;
 	u32 out_fmt_val;
 	u32 in_fmt_val, in_mod_val, in_ps_val;
 	unsigned int i;
@@ -442,18 +443,19 @@ int sun4i_frontend_update_formats(struct sun4i_frontend *frontend,
 	 * I have no idea what this does exactly, but it seems to be
 	 * related to the scaler FIR filter phase parameters.
 	 */
+	ch1_phase_idx = (format->num_planes > 1) ? 1 : 0;
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH0_HORZPHASE_REG,
-		     frontend->data->ch_phase[0].horzphase);
+		     frontend->data->ch_phase[0]);
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH1_HORZPHASE_REG,
-		     frontend->data->ch_phase[1].horzphase);
+		     frontend->data->ch_phase[ch1_phase_idx]);
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH0_VERTPHASE0_REG,
-		     frontend->data->ch_phase[0].vertphase[0]);
+		     frontend->data->ch_phase[0]);
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH1_VERTPHASE0_REG,
-		     frontend->data->ch_phase[1].vertphase[0]);
+		     frontend->data->ch_phase[ch1_phase_idx]);
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH0_VERTPHASE1_REG,
-		     frontend->data->ch_phase[0].vertphase[1]);
+		     frontend->data->ch_phase[0]);
 	regmap_write(frontend->regs, SUN4I_FRONTEND_CH1_VERTPHASE1_REG,
-		     frontend->data->ch_phase[1].vertphase[1]);
+		     frontend->data->ch_phase[ch1_phase_idx]);
 
 	/*
 	 * Checking the input format is sufficient since we currently only
@@ -687,30 +689,12 @@ static const struct dev_pm_ops sun4i_frontend_pm_ops = {
 };
 
 static const struct sun4i_frontend_data sun4i_a10_frontend = {
-	.ch_phase		= {
-		{
-			.horzphase = 0,
-			.vertphase = { 0, 0 },
-		},
-		{
-			.horzphase = 0xfc000,
-			.vertphase = { 0xfc000, 0xfc000 },
-		},
-	},
+	.ch_phase		= { 0x000, 0xfc000 },
 	.has_coef_rdy		= true,
 };
 
 static const struct sun4i_frontend_data sun8i_a33_frontend = {
-	.ch_phase		= {
-		{
-			.horzphase = 0x400,
-			.vertphase = { 0x400, 0x400 },
-		},
-		{
-			.horzphase = 0x400,
-			.vertphase = { 0x400, 0x400 },
-		},
-	},
+	.ch_phase		= { 0x400, 0xfc400 },
 	.has_coef_access_ctrl	= true,
 };
 
diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.h b/drivers/gpu/drm/sun4i/sun4i_frontend.h
index 0c382c1ddb0f..2e7b76e50c2b 100644
--- a/drivers/gpu/drm/sun4i/sun4i_frontend.h
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.h
@@ -115,11 +115,7 @@ struct reset_control;
 struct sun4i_frontend_data {
 	bool	has_coef_access_ctrl;
 	bool	has_coef_rdy;
-
-	struct {
-		u32	horzphase;
-		u32	vertphase[2];
-	} ch_phase[2];
+	u32	ch_phase[2];
 };
 
 struct sun4i_frontend {
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 3ce8ad7603c7..3ffcbaa13878 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -761,7 +761,7 @@ bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
 	/* Don't evict this BO if it's outside of the
 	 * requested placement range
 	 */
-	if (place->fpfn >= (bo->mem.start + bo->mem.size) ||
+	if (place->fpfn >= (bo->mem.start + bo->mem.num_pages) ||
 	    (place->lpfn && place->lpfn <= bo->mem.start))
 		return false;
 
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 5e6fb6c2307f..0d78ba017a29 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -309,6 +309,7 @@ unbind_all:
 	component_unbind_all(dev, drm);
 gem_destroy:
 	vc4_gem_destroy(drm);
+	drm_mode_config_cleanup(drm);
 	vc4_bo_cache_destroy(drm);
 dev_put:
 	drm_dev_put(drm);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 1c96809b51c9..b74acbd5997b 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2773,7 +2773,9 @@ static int wacom_wac_collection(struct hid_device *hdev, struct hid_report *repo
 	if (report->type != HID_INPUT_REPORT)
 		return -1;
 
-	if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
+	if (WACOM_PAD_FIELD(field))
+		return 0;
+	else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
 		wacom_wac_pen_report(hdev, report);
 	else if (WACOM_FINGER_FIELD(field) && wacom->wacom_wac.touch_input)
 		wacom_wac_finger_report(hdev, report);
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 12f7934fddb4..753d2d04cd3a 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1528,15 +1528,6 @@ static int i2c_imx_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	/* Request IRQ */
-	ret = devm_request_irq(&pdev->dev, irq, i2c_imx_isr,
-				IRQF_SHARED | IRQF_NO_SUSPEND,
-				pdev->name, i2c_imx);
-	if (ret) {
-		dev_err(&pdev->dev, "can't claim irq %d\n", irq);
-		goto clk_disable;
-	}
-
 	/* Init queue */
 	init_waitqueue_head(&i2c_imx->queue);
 
@@ -1555,6 +1546,14 @@ static int i2c_imx_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto rpm_disable;
 
+	/* Request IRQ */
+	ret = request_threaded_irq(irq, i2c_imx_isr, NULL, IRQF_SHARED,
+				   pdev->name, i2c_imx);
+	if (ret) {
+		dev_err(&pdev->dev, "can't claim irq %d\n", irq);
+		goto rpm_disable;
+	}
+
 	/* Set up clock divider */
 	i2c_imx->bitrate = IMX_I2C_BIT_RATE;
 	ret = of_property_read_u32(pdev->dev.of_node,
@@ -1614,13 +1613,12 @@ i2c_adapter_remove:
 	i2c_del_adapter(&i2c_imx->adapter);
 clk_notifier_unregister:
 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);
+	free_irq(irq, i2c_imx);
 rpm_disable:
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
-
-clk_disable:
 	clk_disable_unprepare(i2c_imx->clk);
 	return ret;
 }
@@ -1628,7 +1626,7 @@ clk_disable:
 static int i2c_imx_remove(struct platform_device *pdev)
 {
 	struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev);
-	int ret;
+	int irq, ret;
 
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0)
@@ -1648,6 +1646,9 @@ static int i2c_imx_remove(struct platform_device *pdev)
 	imx_i2c_write_reg(0, i2c_imx, IMX_I2C_I2SR);
 
 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);
+	irq = platform_get_irq(pdev, 0);
+	if (irq >= 0)
+		free_irq(irq, i2c_imx);
 	clk_disable_unprepare(i2c_imx->clk);
 
 	pm_runtime_put_noidle(&pdev->dev);
diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c
index c37f201294b2..b1fb1fd763fc 100644
--- a/drivers/iio/adc/rcar-gyroadc.c
+++ b/drivers/iio/adc/rcar-gyroadc.c
@@ -357,7 +357,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3);
 			break;
 		default:
-			return -EINVAL;
+			goto err_e_inval;
 		}
 
 		/*
@@ -374,7 +374,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Failed to get child reg property of ADC \"%pOFn\".\n",
 					child);
-				return ret;
+				goto err_of_node_put;
 			}
 
 			/* Channel number is too high. */
@@ -382,7 +382,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Only %i channels supported with %pOFn, but reg = <%i>.\n",
 					num_channels, child, reg);
-				return -EINVAL;
+				goto err_e_inval;
 			}
 		}
 
@@ -391,7 +391,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			dev_err(dev,
 				"Channel %i uses different ADC mode than the rest.\n",
 				reg);
-			return -EINVAL;
+			goto err_e_inval;
 		}
 
 		/* Channel is valid, grab the regulator. */
@@ -401,7 +401,8 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		if (IS_ERR(vref)) {
 			dev_dbg(dev, "Channel %i 'vref' supply not connected.\n",
 				reg);
-			return PTR_ERR(vref);
+			ret = PTR_ERR(vref);
+			goto err_of_node_put;
 		}
 
 		priv->vref[reg] = vref;
@@ -425,8 +426,10 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		 * attached to the GyroADC at a time, so if we found it,
 		 * we can stop parsing here.
 		 */
-		if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A)
+		if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A) {
+			of_node_put(child);
 			break;
+		}
 	}
 
 	if (first) {
@@ -435,6 +438,12 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 	}
 
 	return 0;
+
+err_e_inval:
+	ret = -EINVAL;
+err_of_node_put:
+	of_node_put(child);
+	return ret;
 }
 
 static void rcar_gyroadc_deinit_supplies(struct iio_dev *indio_dev)
diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c
index 6ea39f4bbb37..55abd2fd2ccc 100644
--- a/drivers/iio/adc/ti-adc0832.c
+++ b/drivers/iio/adc/ti-adc0832.c
@@ -28,6 +28,12 @@ struct adc0832 {
 	struct regulator *reg;
 	struct mutex lock;
 	u8 mux_bits;
+	/*
+	 * Max size needed: 16x 1 byte ADC data + 8 bytes timestamp
+	 * May be shorter if not all channels are enabled subject
+	 * to the timestamp remaining 8 byte aligned.
+	 */
+	u8 data[24] __aligned(8);
 
 	u8 tx_buf[2] ____cacheline_aligned;
 	u8 rx_buf[2];
@@ -199,7 +205,6 @@ static irqreturn_t adc0832_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc0832 *adc = iio_priv(indio_dev);
-	u8 data[24] = { }; /* 16x 1 byte ADC data + 8 bytes timestamp */
 	int scan_index;
 	int i = 0;
 
@@ -217,10 +222,10 @@ static irqreturn_t adc0832_trigger_handler(int irq, void *p)
 			goto out;
 		}
 
-		data[i] = ret;
+		adc->data[i] = ret;
 		i++;
 	}
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, adc->data,
 					   iio_get_time_ns(indio_dev));
 out:
 	mutex_unlock(&adc->lock);
diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c
index 68a9dcb8faa2..db476482cc75 100644
--- a/drivers/iio/adc/ti-adc12138.c
+++ b/drivers/iio/adc/ti-adc12138.c
@@ -47,6 +47,12 @@ struct adc12138 {
 	struct completion complete;
 	/* The number of cclk periods for the S/H's acquisition time */
 	unsigned int acquisition_time;
+	/*
+	 * Maximum size needed: 16x 2 bytes ADC data + 8 bytes timestamp.
+	 * Less may be need if not all channels are enabled, as long as
+	 * the 8 byte alignment of the timestamp is maintained.
+	 */
+	__be16 data[20] __aligned(8);
 
 	u8 tx_buf[2] ____cacheline_aligned;
 	u8 rx_buf[2];
@@ -329,7 +335,6 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc12138 *adc = iio_priv(indio_dev);
-	__be16 data[20] = { }; /* 16x 2 bytes ADC data + 8 bytes timestamp */
 	__be16 trash;
 	int ret;
 	int scan_index;
@@ -345,7 +350,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 		reinit_completion(&adc->complete);
 
 		ret = adc12138_start_and_read_conv(adc, scan_chan,
-						   i ? &data[i - 1] : &trash);
+					i ? &adc->data[i - 1] : &trash);
 		if (ret) {
 			dev_warn(&adc->spi->dev,
 				 "failed to start conversion\n");
@@ -362,7 +367,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 	}
 
 	if (i) {
-		ret = adc12138_read_conv_data(adc, &data[i - 1]);
+		ret = adc12138_read_conv_data(adc, &adc->data[i - 1]);
 		if (ret) {
 			dev_warn(&adc->spi->dev,
 				 "failed to get conversion data\n");
@@ -370,7 +375,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 		}
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, adc->data,
 					   iio_get_time_ns(indio_dev));
 out:
 	mutex_unlock(&adc->lock);
diff --git a/drivers/iio/gyro/itg3200_buffer.c b/drivers/iio/gyro/itg3200_buffer.c
index d3fbe9d86467..1c3c1bd53374 100644
--- a/drivers/iio/gyro/itg3200_buffer.c
+++ b/drivers/iio/gyro/itg3200_buffer.c
@@ -46,13 +46,20 @@ static irqreturn_t itg3200_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct itg3200 *st = iio_priv(indio_dev);
-	__be16 buf[ITG3200_SCAN_ELEMENTS + sizeof(s64)/sizeof(u16)];
-
-	int ret = itg3200_read_all_channels(st->i2c, buf);
+	/*
+	 * Ensure correct alignment and padding including for the
+	 * timestamp that may be inserted.
+	 */
+	struct {
+		__be16 buf[ITG3200_SCAN_ELEMENTS];
+		s64 ts __aligned(8);
+	} scan;
+
+	int ret = itg3200_read_all_channels(st->i2c, scan.buf);
 	if (ret < 0)
 		goto error_ret;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);
 
 	iio_trigger_notify_done(indio_dev->trig);
 
diff --git a/drivers/iio/light/si1145.c b/drivers/iio/light/si1145.c
index 982bba0c54e7..cb40345e7b51 100644
--- a/drivers/iio/light/si1145.c
+++ b/drivers/iio/light/si1145.c
@@ -169,6 +169,7 @@ struct si1145_part_info {
  * @part_info:	Part information
  * @trig:	Pointer to iio trigger
  * @meas_rate:	Value of MEAS_RATE register. Only set in HW in auto mode
+ * @buffer:	Used to pack data read from sensor.
  */
 struct si1145_data {
 	struct i2c_client *client;
@@ -180,6 +181,14 @@ struct si1145_data {
 	bool autonomous;
 	struct iio_trigger *trig;
 	int meas_rate;
+	/*
+	 * Ensure timestamp will be naturally aligned if present.
+	 * Maximum buffer size (may be only partly used if not all
+	 * channels are enabled):
+	 *   6*2 bytes channels data + 4 bytes alignment +
+	 *   8 bytes timestamp
+	 */
+	u8 buffer[24] __aligned(8);
 };
 
 /**
@@ -441,12 +450,6 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 	struct iio_poll_func *pf = private;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct si1145_data *data = iio_priv(indio_dev);
-	/*
-	 * Maximum buffer size:
-	 *   6*2 bytes channels data + 4 bytes alignment +
-	 *   8 bytes timestamp
-	 */
-	u8 buffer[24];
 	int i, j = 0;
 	int ret;
 	u8 irq_status = 0;
@@ -479,7 +482,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 
 		ret = i2c_smbus_read_i2c_block_data_or_emulated(
 				data->client, indio_dev->channels[i].address,
-				sizeof(u16) * run, &buffer[j]);
+				sizeof(u16) * run, &data->buffer[j]);
 		if (ret < 0)
 			goto done;
 		j += run * sizeof(u16);
@@ -494,7 +497,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 			goto done;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
 		iio_get_time_ns(indio_dev));
 
 done:
diff --git a/drivers/infiniband/hw/qedr/qedr_iw_cm.c b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
index e521f3c3dbbf..653ddf30973e 100644
--- a/drivers/infiniband/hw/qedr/qedr_iw_cm.c
+++ b/drivers/infiniband/hw/qedr/qedr_iw_cm.c
@@ -727,6 +727,7 @@ int qedr_iw_destroy_listen(struct iw_cm_id *cm_id)
 						    listener->qed_handle);
 
 	cm_id->rem_ref(cm_id);
+	kfree(listener);
 	return rc;
 }
 
diff --git a/drivers/input/serio/hil_mlc.c b/drivers/input/serio/hil_mlc.c
index e1423f7648d6..4c039e4125d9 100644
--- a/drivers/input/serio/hil_mlc.c
+++ b/drivers/input/serio/hil_mlc.c
@@ -74,7 +74,7 @@ EXPORT_SYMBOL(hil_mlc_unregister);
 static LIST_HEAD(hil_mlcs);
 static DEFINE_RWLOCK(hil_mlcs_lock);
 static struct timer_list	hil_mlcs_kicker;
-static int			hil_mlcs_probe;
+static int			hil_mlcs_probe, hil_mlc_stop;
 
 static void hil_mlcs_process(unsigned long unused);
 static DECLARE_TASKLET_DISABLED(hil_mlcs_tasklet, hil_mlcs_process, 0);
@@ -702,9 +702,13 @@ static int hilse_donode(hil_mlc *mlc)
 		if (!mlc->ostarted) {
 			mlc->ostarted = 1;
 			mlc->opacket = pack;
-			mlc->out(mlc);
+			rc = mlc->out(mlc);
 			nextidx = HILSEN_DOZE;
 			write_unlock_irqrestore(&mlc->lock, flags);
+			if (rc) {
+				hil_mlc_stop = 1;
+				return 1;
+			}
 			break;
 		}
 		mlc->ostarted = 0;
@@ -715,8 +719,13 @@ static int hilse_donode(hil_mlc *mlc)
 
 	case HILSE_CTS:
 		write_lock_irqsave(&mlc->lock, flags);
-		nextidx = mlc->cts(mlc) ? node->bad : node->good;
+		rc = mlc->cts(mlc);
+		nextidx = rc ? node->bad : node->good;
 		write_unlock_irqrestore(&mlc->lock, flags);
+		if (rc) {
+			hil_mlc_stop = 1;
+			return 1;
+		}
 		break;
 
 	default:
@@ -780,6 +789,12 @@ static void hil_mlcs_process(unsigned long unused)
 
 static void hil_mlcs_timer(struct timer_list *unused)
 {
+	if (hil_mlc_stop) {
+		/* could not send packet - stop immediately. */
+		pr_warn(PREFIX "HIL seems stuck - Disabling HIL MLC.\n");
+		return;
+	}
+
 	hil_mlcs_probe = 1;
 	tasklet_schedule(&hil_mlcs_tasklet);
 	/* Re-insert the periodic task. */
diff --git a/drivers/input/serio/hp_sdc_mlc.c b/drivers/input/serio/hp_sdc_mlc.c
index 232d30c825bd..3e85e9039374 100644
--- a/drivers/input/serio/hp_sdc_mlc.c
+++ b/drivers/input/serio/hp_sdc_mlc.c
@@ -210,7 +210,7 @@ static int hp_sdc_mlc_cts(hil_mlc *mlc)
 	priv->tseq[2] = 1;
 	priv->tseq[3] = 0;
 	priv->tseq[4] = 0;
-	__hp_sdc_enqueue_transaction(&priv->trans);
+	return __hp_sdc_enqueue_transaction(&priv->trans);
  busy:
 	return 1;
  done:
@@ -219,7 +219,7 @@ static int hp_sdc_mlc_cts(hil_mlc *mlc)
 	return 0;
 }
 
-static void hp_sdc_mlc_out(hil_mlc *mlc)
+static int hp_sdc_mlc_out(hil_mlc *mlc)
 {
 	struct hp_sdc_mlc_priv_s *priv;
 
@@ -234,7 +234,7 @@ static void hp_sdc_mlc_out(hil_mlc *mlc)
  do_data:
 	if (priv->emtestmode) {
 		up(&mlc->osem);
-		return;
+		return 0;
 	}
 	/* Shouldn't be sending commands when loop may be busy */
 	BUG_ON(down_trylock(&mlc->csem));
@@ -296,7 +296,7 @@ static void hp_sdc_mlc_out(hil_mlc *mlc)
 		BUG_ON(down_trylock(&mlc->csem));
 	}
  enqueue:
-	hp_sdc_enqueue_transaction(&priv->trans);
+	return hp_sdc_enqueue_transaction(&priv->trans);
 }
 
 static int __init hp_sdc_mlc_init(void)
diff --git a/drivers/irqchip/irq-imx-irqsteer.c b/drivers/irqchip/irq-imx-irqsteer.c
index f766265abf16..5aa67ebd291a 100644
--- a/drivers/irqchip/irq-imx-irqsteer.c
+++ b/drivers/irqchip/irq-imx-irqsteer.c
@@ -199,7 +199,7 @@ static int imx_irqsteer_chans_enable(struct irqsteer_data *data)
 {
 	int ret;
 
-	ret = clk_prepare_enable(irqsteer_data->ipg_clk);
+	ret = clk_prepare_enable(data->ipg_clk);
 	if (ret) {
 		dev_err(data->dev, "failed to enable ipg clk: %d\n", ret);
 		return ret;
@@ -329,8 +329,7 @@ static int imx_irqsteer_remove(struct platform_device *pdev)
 	return pm_runtime_force_suspend(&pdev->dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
-static void imx_irqsteer_init(struct irqsteer_data *data)
+static void __maybe_unused imx_irqsteer_init(struct irqsteer_data *data)
 {
 	/* steer all IRQs into configured channel */
 	writel_relaxed(BIT(data->channel), data->regs + CHANCTRL);
@@ -341,7 +340,7 @@ static void imx_irqsteer_init(struct irqsteer_data *data)
 	data->inited = true;
 }
 
-static void imx_irqsteer_save_regs(struct irqsteer_data *data)
+static void __maybe_unused imx_irqsteer_save_regs(struct irqsteer_data *data)
 {
 	int i;
 
@@ -350,7 +349,7 @@ static void imx_irqsteer_save_regs(struct irqsteer_data *data)
 						CHANMASK(i, data->reg_num));
 }
 
-static void imx_irqsteer_restore_regs(struct irqsteer_data *data)
+static void __maybe_unused imx_irqsteer_restore_regs(struct irqsteer_data *data)
 {
 	int i;
 
@@ -360,7 +359,7 @@ static void imx_irqsteer_restore_regs(struct irqsteer_data *data)
 			       data->regs + CHANMASK(i, data->reg_num));
 }
 
-static int imx_irqsteer_runtime_suspend(struct device *dev)
+static int __maybe_unused imx_irqsteer_runtime_suspend(struct device *dev)
 {
 	struct irqsteer_data *irqsteer_data = dev_get_drvdata(dev);
 
@@ -370,7 +369,7 @@ static int imx_irqsteer_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int imx_irqsteer_runtime_resume(struct device *dev)
+static int __maybe_unused imx_irqsteer_runtime_resume(struct device *dev)
 {
 	struct irqsteer_data *irqsteer_data = dev_get_drvdata(dev);
 	int ret;
@@ -389,7 +388,6 @@ static int imx_irqsteer_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops imx_irqsteer_pm_ops = {
 	SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
diff --git a/drivers/leds/leds-bcm6328.c b/drivers/leds/leds-bcm6328.c
index c50d34e2b098..de932755bcb3 100644
--- a/drivers/leds/leds-bcm6328.c
+++ b/drivers/leds/leds-bcm6328.c
@@ -332,7 +332,7 @@ static int bcm6328_led(struct device *dev, struct device_node *nc, u32 reg,
 	led->cdev.brightness_set = bcm6328_led_set;
 	led->cdev.blink_set = bcm6328_blink_set;
 
-	rc = led_classdev_register(dev, &led->cdev);
+	rc = devm_led_classdev_register(dev, &led->cdev);
 	if (rc < 0)
 		return rc;
 
diff --git a/drivers/leds/leds-bcm6358.c b/drivers/leds/leds-bcm6358.c
index aec285fd21c0..dbb8953334d9 100644
--- a/drivers/leds/leds-bcm6358.c
+++ b/drivers/leds/leds-bcm6358.c
@@ -137,7 +137,7 @@ static int bcm6358_led(struct device *dev, struct device_node *nc, u32 reg,
 
 	led->cdev.brightness_set = bcm6358_led_set;
 
-	rc = led_classdev_register(dev, &led->cdev);
+	rc = devm_led_classdev_register(dev, &led->cdev);
 	if (rc < 0)
 		return rc;
 
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 7227d03dbbea..0a6c200e3dcb 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -1372,7 +1372,7 @@ __acquires(bitmap->lock)
 	if (bitmap->bp[page].hijacked ||
 	    bitmap->bp[page].map == NULL)
 		csize = ((sector_t)1) << (bitmap->chunkshift +
-					  PAGE_COUNTER_SHIFT - 1);
+					  PAGE_COUNTER_SHIFT);
 	else
 		csize = ((sector_t)1) << bitmap->chunkshift;
 	*blocks = csize - (offset & (csize - 1));
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 02acd5d5a848..08a7f97750f7 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -2407,8 +2407,6 @@ static int resize_stripes(struct r5conf *conf, int newsize)
 	} else
 		err = -ENOMEM;
 
-	mutex_unlock(&conf->cache_size_mutex);
-
 	conf->slab_cache = sc;
 	conf->active_name = 1-conf->active_name;
 
@@ -2431,6 +2429,8 @@ static int resize_stripes(struct r5conf *conf, int newsize)
 
 	if (!err)
 		conf->pool_size = newsize;
+	mutex_unlock(&conf->cache_size_mutex);
+
 	return err;
 }
 
diff --git a/drivers/media/i2c/imx274.c b/drivers/media/i2c/imx274.c
index 6011cec5e351..e6aa9f32b6a8 100644
--- a/drivers/media/i2c/imx274.c
+++ b/drivers/media/i2c/imx274.c
@@ -1235,6 +1235,8 @@ static int imx274_s_frame_interval(struct v4l2_subdev *sd,
 	ret = imx274_set_frame_interval(imx274, fi->interval);
 
 	if (!ret) {
+		fi->interval = imx274->frame_interval;
+
 		/*
 		 * exposure time range is decided by frame interval
 		 * need to update it after frame interval changes
@@ -1730,9 +1732,9 @@ static int imx274_set_frame_interval(struct stimx274 *priv,
 		__func__, frame_interval.numerator,
 		frame_interval.denominator);
 
-	if (frame_interval.numerator == 0) {
-		err = -EINVAL;
-		goto fail;
+	if (frame_interval.numerator == 0 || frame_interval.denominator == 0) {
+		frame_interval.denominator = IMX274_DEF_FRAME_RATE;
+		frame_interval.numerator = 1;
 	}
 
 	req_frame_rate = (u32)(frame_interval.denominator
diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c
index 09732eed7eb4..656142c7a2cc 100644
--- a/drivers/media/pci/tw5864/tw5864-video.c
+++ b/drivers/media/pci/tw5864/tw5864-video.c
@@ -767,6 +767,9 @@ static int tw5864_enum_frameintervals(struct file *file, void *priv,
 	fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
 
 	ret = tw5864_frameinterval_get(input, &frameinterval);
+	if (ret)
+		return ret;
+
 	fintv->stepwise.step = frameinterval;
 	fintv->stepwise.min = frameinterval;
 	fintv->stepwise.max = frameinterval;
@@ -785,6 +788,9 @@ static int tw5864_g_parm(struct file *file, void *priv,
 	cp->capability = V4L2_CAP_TIMEPERFRAME;
 
 	ret = tw5864_frameinterval_get(input, &cp->timeperframe);
+	if (ret)
+		return ret;
+
 	cp->timeperframe.numerator *= input->frame_interval;
 	cp->capturemode = 0;
 	cp->readbuffers = 2;
diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index ee802fc3bcdf..9fa1bc5514f3 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -571,6 +571,13 @@ static int mtk_jpeg_queue_setup(struct vb2_queue *q,
 	if (!q_data)
 		return -EINVAL;
 
+	if (*num_planes) {
+		for (i = 0; i < *num_planes; i++)
+			if (sizes[i] < q_data->sizeimage[i])
+				return -EINVAL;
+		return 0;
+	}
+
 	*num_planes = q_data->fmt->colplanes;
 	for (i = 0; i < q_data->fmt->colplanes; i++) {
 		sizes[i] = q_data->sizeimage[i];
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index a30a8a731eda..36abe47997b0 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1848,30 +1848,35 @@ int uvc_xu_ctrl_query(struct uvc_video_chain *chain,
 {
 	struct uvc_entity *entity;
 	struct uvc_control *ctrl;
-	unsigned int i, found = 0;
+	unsigned int i;
+	bool found;
 	u32 reqflags;
 	u16 size;
 	u8 *data = NULL;
 	int ret;
 
 	/* Find the extension unit. */
+	found = false;
 	list_for_each_entry(entity, &chain->entities, chain) {
 		if (UVC_ENTITY_TYPE(entity) == UVC_VC_EXTENSION_UNIT &&
-		    entity->id == xqry->unit)
+		    entity->id == xqry->unit) {
+			found = true;
 			break;
+		}
 	}
 
-	if (entity->id != xqry->unit) {
+	if (!found) {
 		uvc_trace(UVC_TRACE_CONTROL, "Extension unit %u not found.\n",
 			xqry->unit);
 		return -ENOENT;
 	}
 
 	/* Find the control and perform delayed initialization if needed. */
+	found = false;
 	for (i = 0; i < entity->ncontrols; ++i) {
 		ctrl = &entity->controls[i];
 		if (ctrl->index == xqry->selector - 1) {
-			found = 1;
+			found = true;
 			break;
 		}
 	}
@@ -2028,13 +2033,6 @@ static int uvc_ctrl_add_info(struct uvc_device *dev, struct uvc_control *ctrl,
 		goto done;
 	}
 
-	/*
-	 * Retrieve control flags from the device. Ignore errors and work with
-	 * default flag values from the uvc_ctrl array when the device doesn't
-	 * properly implement GET_INFO on standard controls.
-	 */
-	uvc_ctrl_get_flags(dev, ctrl, &ctrl->info);
-
 	ctrl->initialized = 1;
 
 	uvc_trace(UVC_TRACE_CONTROL, "Added control %pUl/%u to device %s "
@@ -2257,6 +2255,13 @@ static void uvc_ctrl_init_ctrl(struct uvc_device *dev, struct uvc_control *ctrl)
 		if (uvc_entity_match_guid(ctrl->entity, info->entity) &&
 		    ctrl->index == info->index) {
 			uvc_ctrl_add_info(dev, ctrl, info);
+			/*
+			 * Retrieve control flags from the device. Ignore errors
+			 * and work with default flag values from the uvc_ctrl
+			 * array when the device doesn't properly implement
+			 * GET_INFO on standard controls.
+			 */
+			uvc_ctrl_get_flags(dev, ctrl, &ctrl->info);
 			break;
 		 }
 	}
diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c
index 402c6bc8e621..af296b6fcbbd 100644
--- a/drivers/memory/emif.c
+++ b/drivers/memory/emif.c
@@ -163,35 +163,12 @@ static const struct file_operations emif_mr4_fops = {
 
 static int __init_or_module emif_debugfs_init(struct emif_data *emif)
 {
-	struct dentry	*dentry;
-	int		ret;
-
-	dentry = debugfs_create_dir(dev_name(emif->dev), NULL);
-	if (!dentry) {
-		ret = -ENOMEM;
-		goto err0;
-	}
-	emif->debugfs_root = dentry;
-
-	dentry = debugfs_create_file("regcache_dump", S_IRUGO,
-			emif->debugfs_root, emif, &emif_regdump_fops);
-	if (!dentry) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	dentry = debugfs_create_file("mr4", S_IRUGO,
-			emif->debugfs_root, emif, &emif_mr4_fops);
-	if (!dentry) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
+	emif->debugfs_root = debugfs_create_dir(dev_name(emif->dev), NULL);
+	debugfs_create_file("regcache_dump", S_IRUGO, emif->debugfs_root, emif,
+			    &emif_regdump_fops);
+	debugfs_create_file("mr4", S_IRUGO, emif->debugfs_root, emif,
+			    &emif_mr4_fops);
 	return 0;
-err1:
-	debugfs_remove_recursive(emif->debugfs_root);
-err0:
-	return ret;
 }
 
 static void __exit emif_debugfs_exit(struct emif_data *emif)
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index 1491561d2e5c..4bc43d8eeb9e 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -1176,8 +1176,10 @@ mptscsih_remove(struct pci_dev *pdev)
 	MPT_SCSI_HOST		*hd;
 	int sz1;
 
-	if((hd = shost_priv(host)) == NULL)
-		return;
+	if (host == NULL)
+		hd = NULL;
+	else
+		hd = shost_priv(host);
 
 	mptscsih_shutdown(pdev);
 
@@ -1193,14 +1195,15 @@ mptscsih_remove(struct pci_dev *pdev)
 	    "Free'd ScsiLookup (%d) memory\n",
 	    ioc->name, sz1));
 
-	kfree(hd->info_kbuf);
+	if (hd)
+		kfree(hd->info_kbuf);
 
 	/* NULL the Scsi_Host pointer
 	 */
 	ioc->sh = NULL;
 
-	scsi_host_put(host);
-
+	if (host)
+		scsi_host_put(host);
 	mpt_detach(pdev);
 
 }
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index b2d924c5e82e..0dc8eafdc81d 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -658,6 +658,43 @@ static int sdhci_acpi_emmc_amd_probe_slot(struct platform_device *pdev,
 	    (host->mmc->caps & MMC_CAP_1_8V_DDR))
 		host->mmc->caps2 = MMC_CAP2_HS400_1_8V;
 
+	/*
+	 * There are two types of presets out in the wild:
+	 * 1) Default/broken presets.
+	 *    These presets have two sets of problems:
+	 *    a) The clock divisor for SDR12, SDR25, and SDR50 is too small.
+	 *       This results in clock frequencies that are 2x higher than
+	 *       acceptable. i.e., SDR12 = 25 MHz, SDR25 = 50 MHz, SDR50 =
+	 *       100 MHz.x
+	 *    b) The HS200 and HS400 driver strengths don't match.
+	 *       By default, the SDR104 preset register has a driver strength of
+	 *       A, but the (internal) HS400 preset register has a driver
+	 *       strength of B. As part of initializing HS400, HS200 tuning
+	 *       needs to be performed. Having different driver strengths
+	 *       between tuning and operation is wrong. It results in different
+	 *       rise/fall times that lead to incorrect sampling.
+	 * 2) Firmware with properly initialized presets.
+	 *    These presets have proper clock divisors. i.e., SDR12 => 12MHz,
+	 *    SDR25 => 25 MHz, SDR50 => 50 MHz. Additionally the HS200 and
+	 *    HS400 preset driver strengths match.
+	 *
+	 *    Enabling presets for HS400 doesn't work for the following reasons:
+	 *    1) sdhci_set_ios has a hard coded list of timings that are used
+	 *       to determine if presets should be enabled.
+	 *    2) sdhci_get_preset_value is using a non-standard register to
+	 *       read out HS400 presets. The AMD controller doesn't support this
+	 *       non-standard register. In fact, it doesn't expose the HS400
+	 *       preset register anywhere in the SDHCI memory map. This results
+	 *       in reading a garbage value and using the wrong presets.
+	 *
+	 *       Since HS400 and HS200 presets must be identical, we could
+	 *       instead use the the SDR104 preset register.
+	 *
+	 *    If the above issues are resolved we could remove this quirk for
+	 *    firmware that that has valid presets (i.e., SDR12 <= 12 MHz).
+	 */
+	host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
+
 	host->mmc_host_ops.select_drive_strength = amd_select_drive_strength;
 	host->mmc_host_ops.set_ios = amd_set_ios;
 	host->mmc_host_ops.execute_tuning = amd_sdhci_execute_tuning;
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 561231a9809f..c137e7722255 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -1025,6 +1025,17 @@ static int esdhc_execute_tuning(struct mmc_host *mmc, u32 opcode)
 
 	esdhc_tuning_block_enable(host, true);
 
+	/*
+	 * The eSDHC controller takes the data timeout value into account
+	 * during tuning. If the SD card is too slow sending the response, the
+	 * timer will expire and a "Buffer Read Ready" interrupt without data
+	 * is triggered. This leads to tuning errors.
+	 *
+	 * Just set the timeout to the maximum value because the core will
+	 * already take care of it in sdhci_send_tuning().
+	 */
+	sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
+
 	hs400_tuning = host->flags & SDHCI_HS400_TUNING;
 
 	do {
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index 91d0cb08238c..ddea4621cda1 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -24,6 +24,8 @@
 #include <linux/iopoll.h>
 #include <linux/gpio.h>
 #include <linux/pm_runtime.h>
+#include <linux/pm_qos.h>
+#include <linux/debugfs.h>
 #include <linux/mmc/slot-gpio.h>
 #include <linux/mmc/sdhci-pci-data.h>
 #include <linux/acpi.h>
@@ -520,6 +522,8 @@ struct intel_host {
 	bool	rpm_retune_ok;
 	u32	glk_rx_ctrl1;
 	u32	glk_tun_val;
+	u32	active_ltr;
+	u32	idle_ltr;
 };
 
 static const guid_t intel_dsm_guid =
@@ -764,6 +768,108 @@ static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode)
 	return 0;
 }
 
+#define INTEL_ACTIVELTR		0x804
+#define INTEL_IDLELTR		0x808
+
+#define INTEL_LTR_REQ		BIT(15)
+#define INTEL_LTR_SCALE_MASK	GENMASK(11, 10)
+#define INTEL_LTR_SCALE_1US	(2 << 10)
+#define INTEL_LTR_SCALE_32US	(3 << 10)
+#define INTEL_LTR_VALUE_MASK	GENMASK(9, 0)
+
+static void intel_cache_ltr(struct sdhci_pci_slot *slot)
+{
+	struct intel_host *intel_host = sdhci_pci_priv(slot);
+	struct sdhci_host *host = slot->host;
+
+	intel_host->active_ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
+	intel_host->idle_ltr = readl(host->ioaddr + INTEL_IDLELTR);
+}
+
+static void intel_ltr_set(struct device *dev, s32 val)
+{
+	struct sdhci_pci_chip *chip = dev_get_drvdata(dev);
+	struct sdhci_pci_slot *slot = chip->slots[0];
+	struct intel_host *intel_host = sdhci_pci_priv(slot);
+	struct sdhci_host *host = slot->host;
+	u32 ltr;
+
+	pm_runtime_get_sync(dev);
+
+	/*
+	 * Program latency tolerance (LTR) accordingly what has been asked
+	 * by the PM QoS layer or disable it in case we were passed
+	 * negative value or PM_QOS_LATENCY_ANY.
+	 */
+	ltr = readl(host->ioaddr + INTEL_ACTIVELTR);
+
+	if (val == PM_QOS_LATENCY_ANY || val < 0) {
+		ltr &= ~INTEL_LTR_REQ;
+	} else {
+		ltr |= INTEL_LTR_REQ;
+		ltr &= ~INTEL_LTR_SCALE_MASK;
+		ltr &= ~INTEL_LTR_VALUE_MASK;
+
+		if (val > INTEL_LTR_VALUE_MASK) {
+			val >>= 5;
+			if (val > INTEL_LTR_VALUE_MASK)
+				val = INTEL_LTR_VALUE_MASK;
+			ltr |= INTEL_LTR_SCALE_32US | val;
+		} else {
+			ltr |= INTEL_LTR_SCALE_1US | val;
+		}
+	}
+
+	if (ltr == intel_host->active_ltr)
+		goto out;
+
+	writel(ltr, host->ioaddr + INTEL_ACTIVELTR);
+	writel(ltr, host->ioaddr + INTEL_IDLELTR);
+
+	/* Cache the values into lpss structure */
+	intel_cache_ltr(slot);
+out:
+	pm_runtime_put_autosuspend(dev);
+}
+
+static bool intel_use_ltr(struct sdhci_pci_chip *chip)
+{
+	switch (chip->pdev->device) {
+	case PCI_DEVICE_ID_INTEL_BYT_EMMC:
+	case PCI_DEVICE_ID_INTEL_BYT_EMMC2:
+	case PCI_DEVICE_ID_INTEL_BYT_SDIO:
+	case PCI_DEVICE_ID_INTEL_BYT_SD:
+	case PCI_DEVICE_ID_INTEL_BSW_EMMC:
+	case PCI_DEVICE_ID_INTEL_BSW_SDIO:
+	case PCI_DEVICE_ID_INTEL_BSW_SD:
+		return false;
+	default:
+		return true;
+	}
+}
+
+static void intel_ltr_expose(struct sdhci_pci_chip *chip)
+{
+	struct device *dev = &chip->pdev->dev;
+
+	if (!intel_use_ltr(chip))
+		return;
+
+	dev->power.set_latency_tolerance = intel_ltr_set;
+	dev_pm_qos_expose_latency_tolerance(dev);
+}
+
+static void intel_ltr_hide(struct sdhci_pci_chip *chip)
+{
+	struct device *dev = &chip->pdev->dev;
+
+	if (!intel_use_ltr(chip))
+		return;
+
+	dev_pm_qos_hide_latency_tolerance(dev);
+	dev->power.set_latency_tolerance = NULL;
+}
+
 static void byt_probe_slot(struct sdhci_pci_slot *slot)
 {
 	struct mmc_host_ops *ops = &slot->host->mmc_host_ops;
@@ -778,6 +884,43 @@ static void byt_probe_slot(struct sdhci_pci_slot *slot)
 	ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
 
 	device_property_read_u32(dev, "max-frequency", &mmc->f_max);
+
+	if (!mmc->slotno) {
+		slot->chip->slots[mmc->slotno] = slot;
+		intel_ltr_expose(slot->chip);
+	}
+}
+
+static void byt_add_debugfs(struct sdhci_pci_slot *slot)
+{
+	struct intel_host *intel_host = sdhci_pci_priv(slot);
+	struct mmc_host *mmc = slot->host->mmc;
+	struct dentry *dir = mmc->debugfs_root;
+
+	if (!intel_use_ltr(slot->chip))
+		return;
+
+	debugfs_create_x32("active_ltr", 0444, dir, &intel_host->active_ltr);
+	debugfs_create_x32("idle_ltr", 0444, dir, &intel_host->idle_ltr);
+
+	intel_cache_ltr(slot);
+}
+
+static int byt_add_host(struct sdhci_pci_slot *slot)
+{
+	int ret = sdhci_add_host(slot->host);
+
+	if (!ret)
+		byt_add_debugfs(slot);
+	return ret;
+}
+
+static void byt_remove_slot(struct sdhci_pci_slot *slot, int dead)
+{
+	struct mmc_host *mmc = slot->host->mmc;
+
+	if (!mmc->slotno)
+		intel_ltr_hide(slot->chip);
 }
 
 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
@@ -859,6 +1002,8 @@ static int glk_emmc_add_host(struct sdhci_pci_slot *slot)
 	if (ret)
 		goto cleanup;
 
+	byt_add_debugfs(slot);
+
 	return 0;
 
 cleanup:
@@ -1036,6 +1181,8 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
 #endif
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_emmc_probe_slot,
+	.add_host	= byt_add_host,
+	.remove_slot	= byt_remove_slot,
 	.quirks		= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
 			  SDHCI_QUIRK_NO_LED,
 	.quirks2	= SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
@@ -1049,6 +1196,7 @@ static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
 	.allow_runtime_pm	= true,
 	.probe_slot		= glk_emmc_probe_slot,
 	.add_host		= glk_emmc_add_host,
+	.remove_slot		= byt_remove_slot,
 #ifdef CONFIG_PM_SLEEP
 	.suspend		= sdhci_cqhci_suspend,
 	.resume			= sdhci_cqhci_resume,
@@ -1079,6 +1227,8 @@ static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
 			  SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 	.allow_runtime_pm = true,
 	.probe_slot	= ni_byt_sdio_probe_slot,
+	.add_host	= byt_add_host,
+	.remove_slot	= byt_remove_slot,
 	.ops		= &sdhci_intel_byt_ops,
 	.priv_size	= sizeof(struct intel_host),
 };
@@ -1096,6 +1246,8 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
 			SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_sdio_probe_slot,
+	.add_host	= byt_add_host,
+	.remove_slot	= byt_remove_slot,
 	.ops		= &sdhci_intel_byt_ops,
 	.priv_size	= sizeof(struct intel_host),
 };
@@ -1115,6 +1267,8 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
 	.allow_runtime_pm = true,
 	.own_cd_for_runtime_pm = true,
 	.probe_slot	= byt_sd_probe_slot,
+	.add_host	= byt_add_host,
+	.remove_slot	= byt_remove_slot,
 	.ops		= &sdhci_intel_byt_ops,
 	.priv_size	= sizeof(struct intel_host),
 };
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 767df57abd97..a56ab6cc4d79 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1162,9 +1162,11 @@ static inline void sdhci_auto_cmd_select(struct sdhci_host *host,
 	/*
 	 * In case of Version 4.10 or later, use of 'Auto CMD Auto
 	 * Select' is recommended rather than use of 'Auto CMD12
-	 * Enable' or 'Auto CMD23 Enable'.
+	 * Enable' or 'Auto CMD23 Enable'. We require Version 4 Mode
+	 * here because some controllers (e.g sdhci-of-dwmshc) expect it.
 	 */
-	if (host->version >= SDHCI_SPEC_410 && (use_cmd12 || use_cmd23)) {
+	if (host->version >= SDHCI_SPEC_410 && host->v4_mode &&
+	    (use_cmd12 || use_cmd23)) {
 		*mode |= SDHCI_TRNS_AUTO_SEL;
 
 		ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c
index 8d96ecba1b55..d12a068b0f9e 100644
--- a/drivers/mmc/host/via-sdmmc.c
+++ b/drivers/mmc/host/via-sdmmc.c
@@ -1259,11 +1259,14 @@ static void via_init_sdc_pm(struct via_crdr_mmc_host *host)
 static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state)
 {
 	struct via_crdr_mmc_host *host;
+	unsigned long flags;
 
 	host = pci_get_drvdata(pcidev);
 
+	spin_lock_irqsave(&host->lock, flags);
 	via_save_pcictrlreg(host);
 	via_save_sdcreg(host);
+	spin_unlock_irqrestore(&host->lock, flags);
 
 	pci_save_state(pcidev);
 	pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 12094f249979..0cae20f09aba 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -4444,11 +4444,10 @@ static void spi_nor_sfdp_init_params(struct spi_nor *nor)
 
 	memcpy(&sfdp_params, &nor->params, sizeof(sfdp_params));
 
-	if (spi_nor_parse_sfdp(nor, &sfdp_params)) {
+	if (spi_nor_parse_sfdp(nor, &nor->params)) {
+		memcpy(&nor->params, &sfdp_params, sizeof(nor->params));
 		nor->addr_width = 0;
 		nor->flags &= ~SNOR_F_4B_OPCODES;
-	} else {
-		memcpy(&nor->params, &sfdp_params, sizeof(nor->params));
 	}
 }
 
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 5d77a38dba54..7def041bbe48 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1629,6 +1629,19 @@ int ubi_thread(void *u)
 		    !ubi->thread_enabled || ubi_dbg_is_bgt_disabled(ubi)) {
 			set_current_state(TASK_INTERRUPTIBLE);
 			spin_unlock(&ubi->wl_lock);
+
+			/*
+			 * Check kthread_should_stop() after we set the task
+			 * state to guarantee that we either see the stop bit
+			 * and exit or the task state is reset to runnable such
+			 * that it's not scheduled out indefinitely and detects
+			 * the stop bit at kthread_should_stop().
+			 */
+			if (kthread_should_stop()) {
+				set_current_state(TASK_RUNNING);
+				break;
+			}
+
 			schedule();
 			continue;
 		}
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 95d132c1f5bd..7369a0a9808d 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -2226,8 +2226,16 @@ static int __maybe_unused flexcan_noirq_suspend(struct device *device)
 	struct net_device *dev = dev_get_drvdata(device);
 	struct flexcan_priv *priv = netdev_priv(dev);
 
-	if (netif_running(dev) && device_may_wakeup(device))
-		flexcan_enable_wakeup_irq(priv, true);
+	if (netif_running(dev)) {
+		int err;
+
+		if (device_may_wakeup(device))
+			flexcan_enable_wakeup_irq(priv, true);
+
+		err = pm_runtime_force_suspend(device);
+		if (err)
+			return err;
+	}
 
 	return 0;
 }
@@ -2237,8 +2245,16 @@ static int __maybe_unused flexcan_noirq_resume(struct device *device)
 	struct net_device *dev = dev_get_drvdata(device);
 	struct flexcan_priv *priv = netdev_priv(dev);
 
-	if (netif_running(dev) && device_may_wakeup(device))
-		flexcan_enable_wakeup_irq(priv, false);
+	if (netif_running(dev)) {
+		int err;
+
+		err = pm_runtime_force_resume(device);
+		if (err)
+			return err;
+
+		if (device_may_wakeup(device))
+			flexcan_enable_wakeup_irq(priv, false);
+	}
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index cdd3764760ed..6f777e9b4b93 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -8375,6 +8375,11 @@ static void bnxt_report_link(struct bnxt *bp)
 		u16 fec;
 
 		netif_carrier_on(bp->dev);
+		speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
+		if (speed == SPEED_UNKNOWN) {
+			netdev_info(bp->dev, "NIC Link is Up, speed unknown\n");
+			return;
+		}
 		if (bp->link_info.duplex == BNXT_LINK_DUPLEX_FULL)
 			duplex = "full";
 		else
@@ -8387,7 +8392,6 @@ static void bnxt_report_link(struct bnxt *bp)
 			flow_ctrl = "ON - receive";
 		else
 			flow_ctrl = "none";
-		speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
 		netdev_info(bp->dev, "NIC Link is Up, %u Mbps %s duplex, Flow control: %s\n",
 			    speed, duplex, flow_ctrl);
 		if (bp->flags & BNXT_FLAG_EEE_CAP)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index a5c4d4d66df3..3f74416bb874 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -1718,7 +1718,8 @@ static inline int macb_clear_csum(struct sk_buff *skb)
 
 static int macb_pad_and_fcs(struct sk_buff **skb, struct net_device *ndev)
 {
-	bool cloned = skb_cloned(*skb) || skb_header_cloned(*skb);
+	bool cloned = skb_cloned(*skb) || skb_header_cloned(*skb) ||
+		      skb_is_nonlinear(*skb);
 	int padlen = ETH_ZLEN - (*skb)->len;
 	int headroom = skb_headroom(*skb);
 	int tailroom = skb_tailroom(*skb);
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 3978d82c9598..5cb58ab1eec9 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -1826,20 +1826,12 @@ static netdev_tx_t gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		fcb_len = GMAC_FCB_LEN + GMAC_TXPAL_LEN;
 
 	/* make space for additional header when fcb is needed */
-	if (fcb_len && unlikely(skb_headroom(skb) < fcb_len)) {
-		struct sk_buff *skb_new;
-
-		skb_new = skb_realloc_headroom(skb, fcb_len);
-		if (!skb_new) {
+	if (fcb_len) {
+		if (unlikely(skb_cow_head(skb, fcb_len))) {
 			dev->stats.tx_errors++;
 			dev_kfree_skb_any(skb);
 			return NETDEV_TX_OK;
 		}
-
-		if (skb->sk)
-			skb_set_owner_w(skb_new, skb->sk);
-		dev_consume_skb_any(skb);
-		skb = skb_new;
 	}
 
 	/* total number of fragments in the SKB */
@@ -3377,7 +3369,7 @@ static int gfar_probe(struct platform_device *ofdev)
 
 	if (dev->features & NETIF_F_IP_CSUM ||
 	    priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)
-		dev->needed_headroom = GMAC_FCB_LEN;
+		dev->needed_headroom = GMAC_FCB_LEN + GMAC_TXPAL_LEN;
 
 	/* Initializing some of the rx/tx queue level parameters */
 	for (i = 0; i < priv->num_tx_queues; i++) {
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 91559a52c7ad..f357b9cbfee7 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1109,18 +1109,27 @@ static int ibmvnic_open(struct net_device *netdev)
 	if (adapter->state != VNIC_CLOSED) {
 		rc = ibmvnic_login(netdev);
 		if (rc)
-			return rc;
+			goto out;
 
 		rc = init_resources(adapter);
 		if (rc) {
 			netdev_err(netdev, "failed to initialize resources\n");
 			release_resources(adapter);
-			return rc;
+			goto out;
 		}
 	}
 
 	rc = __ibmvnic_open(netdev);
 
+out:
+	/*
+	 * If open fails due to a pending failover, set device state and
+	 * return. Device operation will be handled by reset routine.
+	 */
+	if (rc && adapter->failover_pending) {
+		adapter->state = VNIC_OPEN;
+		rc = 0;
+	}
 	return rc;
 }
 
@@ -1842,6 +1851,13 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 		   rwi->reset_reason);
 
 	rtnl_lock();
+	/*
+	 * Now that we have the rtnl lock, clear any pending failover.
+	 * This will ensure ibmvnic_open() has either completed or will
+	 * block until failover is complete.
+	 */
+	if (rwi->reset_reason == VNIC_RESET_FAILOVER)
+		adapter->failover_pending = false;
 
 	netif_carrier_off(netdev);
 	adapter->reset_reason = rwi->reset_reason;
@@ -2112,6 +2128,13 @@ static void __ibmvnic_reset(struct work_struct *work)
 			/* CHANGE_PARAM requestor holds rtnl_lock */
 			rc = do_change_param_reset(adapter, rwi, reset_state);
 		} else if (adapter->force_reset_recovery) {
+			/*
+			 * Since we are doing a hard reset now, clear the
+			 * failover_pending flag so we don't ignore any
+			 * future MOBILITY or other resets.
+			 */
+			adapter->failover_pending = false;
+
 			/* Transport event occurred during previous reset */
 			if (adapter->wait_for_reset) {
 				/* Previous was CHANGE_PARAM; caller locked */
@@ -2176,9 +2199,15 @@ static int ibmvnic_reset(struct ibmvnic_adapter *adapter,
 	unsigned long flags;
 	int ret;
 
+	/*
+	 * If failover is pending don't schedule any other reset.
+	 * Instead let the failover complete. If there is already a
+	 * a failover reset scheduled, we will detect and drop the
+	 * duplicate reset when walking the ->rwi_list below.
+	 */
 	if (adapter->state == VNIC_REMOVING ||
 	    adapter->state == VNIC_REMOVED ||
-	    adapter->failover_pending) {
+	    (adapter->failover_pending && reason != VNIC_RESET_FAILOVER)) {
 		ret = EBUSY;
 		netdev_dbg(netdev, "Adapter removing or pending failover, skipping reset\n");
 		goto err;
@@ -4532,7 +4561,6 @@ static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
 		case IBMVNIC_CRQ_INIT:
 			dev_info(dev, "Partner initialized\n");
 			adapter->from_passive_init = true;
-			adapter->failover_pending = false;
 			if (!completion_done(&adapter->init_done)) {
 				complete(&adapter->init_done);
 				adapter->init_done_rc = -EIO;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 7277706847b1..8f0eec9fb17b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -493,6 +493,9 @@ static void mlxsw_emad_transmit_retry(struct mlxsw_core *mlxsw_core,
 		err = mlxsw_emad_transmit(trans->core, trans);
 		if (err == 0)
 			return;
+
+		if (!atomic_dec_and_test(&trans->active))
+			return;
 	} else {
 		err = -EIO;
 	}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index 5aacc00962df..b8de3784d976 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -125,6 +125,11 @@ static int ionic_get_link_ksettings(struct net_device *netdev,
 
 	ethtool_link_ksettings_zero_link_mode(ks, supported);
 
+	if (!idev->port_info) {
+		netdev_err(netdev, "port_info not initialized\n");
+		return -EOPNOTSUPP;
+	}
+
 	/* The port_info data is found in a DMA space that the NIC keeps
 	 * up-to-date, so there's no need to request the data from the
 	 * NIC, we already have it in our memory space.
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 272d5773573e..27b67f12ec45 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1970,7 +1970,8 @@ static int sfp_probe(struct platform_device *pdev)
 			continue;
 
 		sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]);
-		if (!sfp->gpio_irq[i]) {
+		if (sfp->gpio_irq[i] < 0) {
+			sfp->gpio_irq[i] = 0;
 			poll = true;
 			continue;
 		}
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 21d905d90650..868acb410141 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1331,6 +1331,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},	/* Telit ME910 dual modem */
 	{QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},	/* Telit LE920 */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1201, 2)},	/* Telit LE920, LE920A4 */
+	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1230, 2)},	/* Telit LE910Cx */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1260, 2)},	/* Telit LE910Cx */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1261, 2)},	/* Telit LE910Cx */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x1900, 1)},	/* Telit LN940 series */
diff --git a/drivers/net/wan/hdlc_fr.c b/drivers/net/wan/hdlc_fr.c
index d6cfd51613ed..3a44dad87602 100644
--- a/drivers/net/wan/hdlc_fr.c
+++ b/drivers/net/wan/hdlc_fr.c
@@ -273,63 +273,69 @@ static inline struct net_device **get_dev_p(struct pvc_device *pvc,
 
 static int fr_hard_header(struct sk_buff **skb_p, u16 dlci)
 {
-	u16 head_len;
 	struct sk_buff *skb = *skb_p;
 
-	switch (skb->protocol) {
-	case cpu_to_be16(NLPID_CCITT_ANSI_LMI):
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_CCITT_ANSI_LMI;
-		break;
-
-	case cpu_to_be16(NLPID_CISCO_LMI):
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_CISCO_LMI;
-		break;
-
-	case cpu_to_be16(ETH_P_IP):
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_IP;
-		break;
-
-	case cpu_to_be16(ETH_P_IPV6):
-		head_len = 4;
-		skb_push(skb, head_len);
-		skb->data[3] = NLPID_IPV6;
-		break;
-
-	case cpu_to_be16(ETH_P_802_3):
-		head_len = 10;
-		if (skb_headroom(skb) < head_len) {
-			struct sk_buff *skb2 = skb_realloc_headroom(skb,
-								    head_len);
+	if (!skb->dev) { /* Control packets */
+		switch (dlci) {
+		case LMI_CCITT_ANSI_DLCI:
+			skb_push(skb, 4);
+			skb->data[3] = NLPID_CCITT_ANSI_LMI;
+			break;
+
+		case LMI_CISCO_DLCI:
+			skb_push(skb, 4);
+			skb->data[3] = NLPID_CISCO_LMI;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+
+	} else if (skb->dev->type == ARPHRD_DLCI) {
+		switch (skb->protocol) {
+		case htons(ETH_P_IP):
+			skb_push(skb, 4);
+			skb->data[3] = NLPID_IP;
+			break;
+
+		case htons(ETH_P_IPV6):
+			skb_push(skb, 4);
+			skb->data[3] = NLPID_IPV6;
+			break;
+
+		default:
+			skb_push(skb, 10);
+			skb->data[3] = FR_PAD;
+			skb->data[4] = NLPID_SNAP;
+			/* OUI 00-00-00 indicates an Ethertype follows */
+			skb->data[5] = 0x00;
+			skb->data[6] = 0x00;
+			skb->data[7] = 0x00;
+			/* This should be an Ethertype: */
+			*(__be16 *)(skb->data + 8) = skb->protocol;
+		}
+
+	} else if (skb->dev->type == ARPHRD_ETHER) {
+		if (skb_headroom(skb) < 10) {
+			struct sk_buff *skb2 = skb_realloc_headroom(skb, 10);
 			if (!skb2)
 				return -ENOBUFS;
 			dev_kfree_skb(skb);
 			skb = *skb_p = skb2;
 		}
-		skb_push(skb, head_len);
+		skb_push(skb, 10);
 		skb->data[3] = FR_PAD;
 		skb->data[4] = NLPID_SNAP;
-		skb->data[5] = FR_PAD;
+		/* OUI 00-80-C2 stands for the 802.1 organization */
+		skb->data[5] = 0x00;
 		skb->data[6] = 0x80;
 		skb->data[7] = 0xC2;
+		/* PID 00-07 stands for Ethernet frames without FCS */
 		skb->data[8] = 0x00;
-		skb->data[9] = 0x07; /* bridged Ethernet frame w/out FCS */
-		break;
+		skb->data[9] = 0x07;
 
-	default:
-		head_len = 10;
-		skb_push(skb, head_len);
-		skb->data[3] = FR_PAD;
-		skb->data[4] = NLPID_SNAP;
-		skb->data[5] = FR_PAD;
-		skb->data[6] = FR_PAD;
-		skb->data[7] = FR_PAD;
-		*(__be16*)(skb->data + 8) = skb->protocol;
+	} else {
+		return -EINVAL;
 	}
 
 	dlci_to_q922(skb->data, dlci);
@@ -425,8 +431,8 @@ static netdev_tx_t pvc_xmit(struct sk_buff *skb, struct net_device *dev)
 				skb_put(skb, pad);
 				memset(skb->data + len, 0, pad);
 			}
-			skb->protocol = cpu_to_be16(ETH_P_802_3);
 		}
+		skb->dev = dev;
 		if (!fr_hard_header(&skb, pvc->dlci)) {
 			dev->stats.tx_bytes += skb->len;
 			dev->stats.tx_packets++;
@@ -494,10 +500,8 @@ static void fr_lmi_send(struct net_device *dev, int fullrep)
 	memset(skb->data, 0, len);
 	skb_reserve(skb, 4);
 	if (lmi == LMI_CISCO) {
-		skb->protocol = cpu_to_be16(NLPID_CISCO_LMI);
 		fr_hard_header(&skb, LMI_CISCO_DLCI);
 	} else {
-		skb->protocol = cpu_to_be16(NLPID_CCITT_ANSI_LMI);
 		fr_hard_header(&skb, LMI_CCITT_ANSI_DLCI);
 	}
 	data = skb_tail_pointer(skb);
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 8ca0a808a644..04095f91d301 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -949,6 +949,7 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar,
 	u8 preamble = 0;
 	u8 group_id;
 	u32 info1, info2, info3;
+	u32 stbc, nsts_su;
 
 	info1 = __le32_to_cpu(rxd->ppdu_start.info1);
 	info2 = __le32_to_cpu(rxd->ppdu_start.info2);
@@ -993,11 +994,16 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar,
 		 */
 		bw = info2 & 3;
 		sgi = info3 & 1;
+		stbc = (info2 >> 3) & 1;
 		group_id = (info2 >> 4) & 0x3F;
 
 		if (GROUP_ID_IS_SU_MIMO(group_id)) {
 			mcs = (info3 >> 4) & 0x0F;
-			nss = ((info2 >> 10) & 0x07) + 1;
+			nsts_su = ((info2 >> 10) & 0x07);
+			if (stbc)
+				nss = (nsts_su >> 2) + 1;
+			else
+				nss = (nsts_su + 1);
 		} else {
 			/* Hardware doesn't decode VHT-SIG-B into Rx descriptor
 			 * so it's impossible to decode MCS. Also since
diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c
index 8fe626deadeb..24b1927a0751 100644
--- a/drivers/net/wireless/ath/ath10k/sdio.c
+++ b/drivers/net/wireless/ath/ath10k/sdio.c
@@ -550,6 +550,10 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar,
 				    le16_to_cpu(htc_hdr->len),
 				    ATH10K_HTC_MBOX_MAX_PAYLOAD_LENGTH);
 			ret = -ENOMEM;
+
+			queue_work(ar->workqueue, &ar->restart_work);
+			ath10k_warn(ar, "exceeds length, start recovery\n");
+
 			goto err;
 		}
 
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
index 79c8a858b6d6..a30fcfbf2ee7 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
@@ -304,10 +304,12 @@ void brcmf_fweh_detach(struct brcmf_pub *drvr)
 {
 	struct brcmf_fweh_info *fweh = &drvr->fweh;
 
-	/* cancel the worker */
-	cancel_work_sync(&fweh->event_work);
-	WARN_ON(!list_empty(&fweh->event_q));
-	memset(fweh->evt_handler, 0, sizeof(fweh->evt_handler));
+	/* cancel the worker if initialized */
+	if (fweh->event_work.func) {
+		cancel_work_sync(&fweh->event_work);
+		WARN_ON(!list_empty(&fweh->event_q));
+		memset(fweh->evt_handler, 0, sizeof(fweh->evt_handler));
+	}
 }
 
 /**
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index 05847eb91a1b..32fe131ba366 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -140,6 +140,20 @@ struct xenvif_queue { /* Per-queue data for xenvif */
 	char name[QUEUE_NAME_SIZE]; /* DEVNAME-qN */
 	struct xenvif *vif; /* Parent VIF */
 
+	/*
+	 * TX/RX common EOI handling.
+	 * When feature-split-event-channels = 0, interrupt handler sets
+	 * NETBK_COMMON_EOI, otherwise NETBK_RX_EOI and NETBK_TX_EOI are set
+	 * by the RX and TX interrupt handlers.
+	 * RX and TX handler threads will issue an EOI when either
+	 * NETBK_COMMON_EOI or their specific bits (NETBK_RX_EOI or
+	 * NETBK_TX_EOI) are set and they will reset those bits.
+	 */
+	atomic_t eoi_pending;
+#define NETBK_RX_EOI		0x01
+#define NETBK_TX_EOI		0x02
+#define NETBK_COMMON_EOI	0x04
+
 	/* Use NAPI for guest TX */
 	struct napi_struct napi;
 	/* When feature-split-event-channels = 0, tx_irq = rx_irq. */
@@ -375,6 +389,7 @@ int xenvif_dealloc_kthread(void *data);
 
 irqreturn_t xenvif_ctrl_irq_fn(int irq, void *data);
 
+bool xenvif_have_rx_work(struct xenvif_queue *queue, bool test_kthread);
 void xenvif_rx_action(struct xenvif_queue *queue);
 void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb);
 
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 103ed00775eb..e889488b84a0 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -77,12 +77,28 @@ int xenvif_schedulable(struct xenvif *vif)
 		!vif->disabled;
 }
 
+static bool xenvif_handle_tx_interrupt(struct xenvif_queue *queue)
+{
+	bool rc;
+
+	rc = RING_HAS_UNCONSUMED_REQUESTS(&queue->tx);
+	if (rc)
+		napi_schedule(&queue->napi);
+	return rc;
+}
+
 static irqreturn_t xenvif_tx_interrupt(int irq, void *dev_id)
 {
 	struct xenvif_queue *queue = dev_id;
+	int old;
 
-	if (RING_HAS_UNCONSUMED_REQUESTS(&queue->tx))
-		napi_schedule(&queue->napi);
+	old = atomic_fetch_or(NETBK_TX_EOI, &queue->eoi_pending);
+	WARN(old & NETBK_TX_EOI, "Interrupt while EOI pending\n");
+
+	if (!xenvif_handle_tx_interrupt(queue)) {
+		atomic_andnot(NETBK_TX_EOI, &queue->eoi_pending);
+		xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS);
+	}
 
 	return IRQ_HANDLED;
 }
@@ -116,19 +132,46 @@ static int xenvif_poll(struct napi_struct *napi, int budget)
 	return work_done;
 }
 
+static bool xenvif_handle_rx_interrupt(struct xenvif_queue *queue)
+{
+	bool rc;
+
+	rc = xenvif_have_rx_work(queue, false);
+	if (rc)
+		xenvif_kick_thread(queue);
+	return rc;
+}
+
 static irqreturn_t xenvif_rx_interrupt(int irq, void *dev_id)
 {
 	struct xenvif_queue *queue = dev_id;
+	int old;
 
-	xenvif_kick_thread(queue);
+	old = atomic_fetch_or(NETBK_RX_EOI, &queue->eoi_pending);
+	WARN(old & NETBK_RX_EOI, "Interrupt while EOI pending\n");
+
+	if (!xenvif_handle_rx_interrupt(queue)) {
+		atomic_andnot(NETBK_RX_EOI, &queue->eoi_pending);
+		xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS);
+	}
 
 	return IRQ_HANDLED;
 }
 
 irqreturn_t xenvif_interrupt(int irq, void *dev_id)
 {
-	xenvif_tx_interrupt(irq, dev_id);
-	xenvif_rx_interrupt(irq, dev_id);
+	struct xenvif_queue *queue = dev_id;
+	int old;
+
+	old = atomic_fetch_or(NETBK_COMMON_EOI, &queue->eoi_pending);
+	WARN(old, "Interrupt while EOI pending\n");
+
+	/* Use bitwise or as we need to call both functions. */
+	if ((!xenvif_handle_tx_interrupt(queue) |
+	     !xenvif_handle_rx_interrupt(queue))) {
+		atomic_andnot(NETBK_COMMON_EOI, &queue->eoi_pending);
+		xen_irq_lateeoi(irq, XEN_EOI_FLAG_SPURIOUS);
+	}
 
 	return IRQ_HANDLED;
 }
@@ -595,7 +638,7 @@ int xenvif_connect_ctrl(struct xenvif *vif, grant_ref_t ring_ref,
 	shared = (struct xen_netif_ctrl_sring *)addr;
 	BACK_RING_INIT(&vif->ctrl, shared, XEN_PAGE_SIZE);
 
-	err = bind_interdomain_evtchn_to_irq(vif->domid, evtchn);
+	err = bind_interdomain_evtchn_to_irq_lateeoi(vif->domid, evtchn);
 	if (err < 0)
 		goto err_unmap;
 
@@ -653,7 +696,7 @@ int xenvif_connect_data(struct xenvif_queue *queue,
 
 	if (tx_evtchn == rx_evtchn) {
 		/* feature-split-event-channels == 0 */
-		err = bind_interdomain_evtchn_to_irqhandler(
+		err = bind_interdomain_evtchn_to_irqhandler_lateeoi(
 			queue->vif->domid, tx_evtchn, xenvif_interrupt, 0,
 			queue->name, queue);
 		if (err < 0)
@@ -664,7 +707,7 @@ int xenvif_connect_data(struct xenvif_queue *queue,
 		/* feature-split-event-channels == 1 */
 		snprintf(queue->tx_irq_name, sizeof(queue->tx_irq_name),
 			 "%s-tx", queue->name);
-		err = bind_interdomain_evtchn_to_irqhandler(
+		err = bind_interdomain_evtchn_to_irqhandler_lateeoi(
 			queue->vif->domid, tx_evtchn, xenvif_tx_interrupt, 0,
 			queue->tx_irq_name, queue);
 		if (err < 0)
@@ -674,7 +717,7 @@ int xenvif_connect_data(struct xenvif_queue *queue,
 
 		snprintf(queue->rx_irq_name, sizeof(queue->rx_irq_name),
 			 "%s-rx", queue->name);
-		err = bind_interdomain_evtchn_to_irqhandler(
+		err = bind_interdomain_evtchn_to_irqhandler_lateeoi(
 			queue->vif->domid, rx_evtchn, xenvif_rx_interrupt, 0,
 			queue->rx_irq_name, queue);
 		if (err < 0)
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 0020b2e8c279..fa1ac0abc924 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -162,6 +162,10 @@ void xenvif_napi_schedule_or_enable_events(struct xenvif_queue *queue)
 
 	if (more_to_do)
 		napi_schedule(&queue->napi);
+	else if (atomic_fetch_andnot(NETBK_TX_EOI | NETBK_COMMON_EOI,
+				     &queue->eoi_pending) &
+		 (NETBK_TX_EOI | NETBK_COMMON_EOI))
+		xen_irq_lateeoi(queue->tx_irq, 0);
 }
 
 static void tx_add_credit(struct xenvif_queue *queue)
@@ -1622,9 +1626,14 @@ static bool xenvif_ctrl_work_todo(struct xenvif *vif)
 irqreturn_t xenvif_ctrl_irq_fn(int irq, void *data)
 {
 	struct xenvif *vif = data;
+	unsigned int eoi_flag = XEN_EOI_FLAG_SPURIOUS;
 
-	while (xenvif_ctrl_work_todo(vif))
+	while (xenvif_ctrl_work_todo(vif)) {
 		xenvif_ctrl_action(vif);
+		eoi_flag = 0;
+	}
+
+	xen_irq_lateeoi(irq, eoi_flag);
 
 	return IRQ_HANDLED;
 }
diff --git a/drivers/net/xen-netback/rx.c b/drivers/net/xen-netback/rx.c
index ef5887037b22..9b62f65b630e 100644
--- a/drivers/net/xen-netback/rx.c
+++ b/drivers/net/xen-netback/rx.c
@@ -490,13 +490,13 @@ static bool xenvif_rx_queue_ready(struct xenvif_queue *queue)
 	return queue->stalled && prod - cons >= 1;
 }
 
-static bool xenvif_have_rx_work(struct xenvif_queue *queue)
+bool xenvif_have_rx_work(struct xenvif_queue *queue, bool test_kthread)
 {
 	return xenvif_rx_ring_slots_available(queue) ||
 		(queue->vif->stall_timeout &&
 		 (xenvif_rx_queue_stalled(queue) ||
 		  xenvif_rx_queue_ready(queue))) ||
-		kthread_should_stop() ||
+		(test_kthread && kthread_should_stop()) ||
 		queue->vif->disabled;
 }
 
@@ -527,15 +527,20 @@ static void xenvif_wait_for_rx_work(struct xenvif_queue *queue)
 {
 	DEFINE_WAIT(wait);
 
-	if (xenvif_have_rx_work(queue))
+	if (xenvif_have_rx_work(queue, true))
 		return;
 
 	for (;;) {
 		long ret;
 
 		prepare_to_wait(&queue->wq, &wait, TASK_INTERRUPTIBLE);
-		if (xenvif_have_rx_work(queue))
+		if (xenvif_have_rx_work(queue, true))
 			break;
+		if (atomic_fetch_andnot(NETBK_RX_EOI | NETBK_COMMON_EOI,
+					&queue->eoi_pending) &
+		    (NETBK_RX_EOI | NETBK_COMMON_EOI))
+			xen_irq_lateeoi(queue->rx_irq, 0);
+
 		ret = schedule_timeout(xenvif_rx_queue_timeout(queue));
 		if (!ret)
 			break;
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index abe4fe496d05..e957ad0a07f5 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1520,6 +1520,14 @@ static void nvme_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc)
 		return;
 	}
 
+	/* sanity checking for received data length */
+	if (unlikely(wc->byte_len < len)) {
+		dev_err(queue->ctrl->ctrl.device,
+			"Unexpected nvme completion length(%d)\n", wc->byte_len);
+		nvme_rdma_error_recovery(queue->ctrl);
+		return;
+	}
+
 	ib_dma_sync_single_for_cpu(ibdev, qe->dma, len, DMA_FROM_DEVICE);
 	/*
 	 * AEN requests are special as they don't time out and can
@@ -1679,7 +1687,6 @@ static int nvme_rdma_cm_handler(struct rdma_cm_id *cm_id,
 		complete(&queue->cm_done);
 		return 0;
 	case RDMA_CM_EVENT_REJECTED:
-		nvme_rdma_destroy_queue_ib(queue);
 		cm_error = nvme_rdma_conn_rejected(queue, ev);
 		break;
 	case RDMA_CM_EVENT_ROUTE_ERROR:
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 6b2f1e290fa7..cca5a00c098a 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -878,8 +878,6 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
 	req->error_loc = NVMET_NO_ERROR_LOC;
 	req->error_slba = 0;
 
-	trace_nvmet_req_init(req, req->cmd);
-
 	/* no support for fused commands yet */
 	if (unlikely(flags & (NVME_CMD_FUSE_FIRST | NVME_CMD_FUSE_SECOND))) {
 		req->error_loc = offsetof(struct nvme_common_command, flags);
@@ -913,6 +911,8 @@ bool nvmet_req_init(struct nvmet_req *req, struct nvmet_cq *cq,
 	if (status)
 		goto fail;
 
+	trace_nvmet_req_init(req, req->cmd);
+
 	if (unlikely(!percpu_ref_tryget_live(&sq->ref))) {
 		status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
 		goto fail;
diff --git a/drivers/nvme/target/trace.h b/drivers/nvme/target/trace.h
index e645caa882dd..3f61b6657175 100644
--- a/drivers/nvme/target/trace.h
+++ b/drivers/nvme/target/trace.h
@@ -46,19 +46,12 @@ static inline struct nvmet_ctrl *nvmet_req_to_ctrl(struct nvmet_req *req)
 	return req->sq->ctrl;
 }
 
-static inline void __assign_disk_name(char *name, struct nvmet_req *req,
-		bool init)
+static inline void __assign_req_name(char *name, struct nvmet_req *req)
 {
-	struct nvmet_ctrl *ctrl = nvmet_req_to_ctrl(req);
-	struct nvmet_ns *ns;
-
-	if ((init && req->sq->qid) || (!init && req->cq->qid)) {
-		ns = nvmet_find_namespace(ctrl, req->cmd->rw.nsid);
-		strncpy(name, ns->device_path, DISK_NAME_LEN);
-		return;
-	}
-
-	memset(name, 0, DISK_NAME_LEN);
+	if (req->ns)
+		strncpy(name, req->ns->device_path, DISK_NAME_LEN);
+	else
+		memset(name, 0, DISK_NAME_LEN);
 }
 #endif
 
@@ -81,7 +74,7 @@ TRACE_EVENT(nvmet_req_init,
 	TP_fast_assign(
 		__entry->cmd = cmd;
 		__entry->ctrl = nvmet_req_to_ctrl(req);
-		__assign_disk_name(__entry->disk, req, true);
+		__assign_req_name(__entry->disk, req);
 		__entry->qid = req->sq->qid;
 		__entry->cid = cmd->common.command_id;
 		__entry->opcode = cmd->common.opcode;
@@ -121,7 +114,7 @@ TRACE_EVENT(nvmet_req_complete,
 		__entry->cid = req->cqe->command_id;
 		__entry->result = le64_to_cpu(req->cqe->result.u64);
 		__entry->status = le16_to_cpu(req->cqe->status) >> 1;
-		__assign_disk_name(__entry->disk, req, false);
+		__assign_req_name(__entry->disk, req);
 	),
 	TP_printk("nvmet%s: %sqid=%d, cmdid=%u, res=%#llx, status=%#x",
 		__print_ctrl_name(__entry->ctrl),
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index c8c0d4e3e162..2e0e82555824 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -219,6 +219,16 @@ static int __init __rmem_cmp(const void *a, const void *b)
 	if (ra->base > rb->base)
 		return 1;
 
+	/*
+	 * Put the dynamic allocations (address == 0, size == 0) before static
+	 * allocations at address 0x0 so that overlap detection works
+	 * correctly.
+	 */
+	if (ra->size < rb->size)
+		return -1;
+	if (ra->size > rb->size)
+		return 1;
+
 	return 0;
 }
 
@@ -236,8 +246,7 @@ static void __init __rmem_check_for_overlap(void)
 
 		this = &reserved_mem[i];
 		next = &reserved_mem[i + 1];
-		if (!(this->base && next->base))
-			continue;
+
 		if (this->base + this->size > next->base) {
 			phys_addr_t this_end, next_end;
 
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 0c02d500158f..3f40f951a6cd 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -944,6 +944,16 @@ static bool acpi_pci_bridge_d3(struct pci_dev *dev)
 	if (!dev->is_hotplug_bridge)
 		return false;
 
+	/* Assume D3 support if the bridge is power-manageable by ACPI. */
+	adev = ACPI_COMPANION(&dev->dev);
+	if (!adev && !pci_dev_is_added(dev)) {
+		adev = acpi_pci_find_companion(&dev->dev);
+		ACPI_COMPANION_SET(&dev->dev, adev);
+	}
+
+	if (adev && acpi_device_power_manageable(adev))
+		return true;
+
 	/*
 	 * Look for a special _DSD property for the root port and if it
 	 * is set we know the hierarchy behind it supports D3 just fine.
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 664e50103eaa..aff0a0a5e7f8 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -1678,8 +1678,6 @@ static int bq27xxx_battery_status(struct bq27xxx_device_info *di,
 			status = POWER_SUPPLY_STATUS_FULL;
 		else if (di->cache.flags & BQ27000_FLAG_CHGS)
 			status = POWER_SUPPLY_STATUS_CHARGING;
-		else if (power_supply_am_i_supplied(di->bat) > 0)
-			status = POWER_SUPPLY_STATUS_NOT_CHARGING;
 		else
 			status = POWER_SUPPLY_STATUS_DISCHARGING;
 	} else {
@@ -1691,6 +1689,10 @@ static int bq27xxx_battery_status(struct bq27xxx_device_info *di,
 			status = POWER_SUPPLY_STATUS_CHARGING;
 	}
 
+	if ((status == POWER_SUPPLY_STATUS_DISCHARGING) &&
+	    (power_supply_am_i_supplied(di->bat) > 0))
+		status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+
 	val->intval = status;
 
 	return 0;
diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index c3cad2b6daba..1139ca725195 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -341,6 +341,7 @@ static int param_set_ac_online(const char *key, const struct kernel_param *kp)
 static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
 {
 	strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
@@ -354,6 +355,7 @@ static int param_set_usb_online(const char *key, const struct kernel_param *kp)
 static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
 {
 	strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
@@ -368,6 +370,7 @@ static int param_set_battery_status(const char *key,
 static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
 {
 	strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
@@ -382,6 +385,7 @@ static int param_set_battery_health(const char *key,
 static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
 {
 	strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
@@ -397,6 +401,7 @@ static int param_get_battery_present(char *buffer,
 					const struct kernel_param *kp)
 {
 	strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
@@ -414,6 +419,7 @@ static int param_get_battery_technology(char *buffer,
 {
 	strcpy(buffer,
 		map_get_key(map_technology, battery_technology, "unknown"));
+	strcat(buffer, "\n");
 	return strlen(buffer);
 }
 
diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
index f808c5fa9838..3f0b8e2ef3d4 100644
--- a/drivers/powercap/powercap_sys.c
+++ b/drivers/powercap/powercap_sys.c
@@ -367,9 +367,9 @@ static void create_power_zone_common_attributes(
 					&dev_attr_max_energy_range_uj.attr;
 	if (power_zone->ops->get_energy_uj) {
 		if (power_zone->ops->reset_energy_uj)
-			dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUGO;
+			dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUSR;
 		else
-			dev_attr_energy_uj.attr.mode = S_IRUGO;
+			dev_attr_energy_uj.attr.mode = S_IRUSR;
 		power_zone->zone_dev_attrs[count++] =
 					&dev_attr_energy_uj.attr;
 	}
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 6da80f789684..0c647c9d8777 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -4056,6 +4056,8 @@ int regulator_get_voltage_rdev(struct regulator_dev *rdev)
 		ret = rdev->desc->fixed_uV;
 	} else if (rdev->supply) {
 		ret = regulator_get_voltage_rdev(rdev->supply->rdev);
+	} else if (rdev->supply_name) {
+		return -EPROBE_DEFER;
 	} else {
 		return -EINVAL;
 	}
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 1995f5b3ea67..d5114abcde19 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -970,7 +970,7 @@ static int qcom_glink_rx_open_ack(struct qcom_glink *glink, unsigned int lcid)
 		return -EINVAL;
 	}
 
-	complete(&channel->open_ack);
+	complete_all(&channel->open_ack);
 
 	return 0;
 }
@@ -1178,7 +1178,7 @@ static int qcom_glink_announce_create(struct rpmsg_device *rpdev)
 	__be32 *val = defaults;
 	int size;
 
-	if (glink->intentless)
+	if (glink->intentless || !completion_done(&channel->open_ack))
 		return 0;
 
 	prop = of_find_property(np, "qcom,intents", NULL);
@@ -1413,7 +1413,7 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
 	channel->rcid = ret;
 	spin_unlock_irqrestore(&glink->idr_lock, flags);
 
-	complete(&channel->open_req);
+	complete_all(&channel->open_req);
 
 	if (create_device) {
 		rpdev = kzalloc(sizeof(*rpdev), GFP_KERNEL);
diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c
index 8102469e27c0..0c436aea0da4 100644
--- a/drivers/rtc/rtc-rx8010.c
+++ b/drivers/rtc/rtc-rx8010.c
@@ -424,16 +424,26 @@ static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
 	}
 }
 
-static struct rtc_class_ops rx8010_rtc_ops = {
+static const struct rtc_class_ops rx8010_rtc_ops_default = {
 	.read_time = rx8010_get_time,
 	.set_time = rx8010_set_time,
 	.ioctl = rx8010_ioctl,
 };
 
+static const struct rtc_class_ops rx8010_rtc_ops_alarm = {
+	.read_time = rx8010_get_time,
+	.set_time = rx8010_set_time,
+	.ioctl = rx8010_ioctl,
+	.read_alarm = rx8010_read_alarm,
+	.set_alarm = rx8010_set_alarm,
+	.alarm_irq_enable = rx8010_alarm_irq_enable,
+};
+
 static int rx8010_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	struct i2c_adapter *adapter = client->adapter;
+	const struct rtc_class_ops *rtc_ops;
 	struct rx8010_data *rx8010;
 	int err = 0;
 
@@ -464,16 +474,16 @@ static int rx8010_probe(struct i2c_client *client,
 
 		if (err) {
 			dev_err(&client->dev, "unable to request IRQ\n");
-			client->irq = 0;
-		} else {
-			rx8010_rtc_ops.read_alarm = rx8010_read_alarm;
-			rx8010_rtc_ops.set_alarm = rx8010_set_alarm;
-			rx8010_rtc_ops.alarm_irq_enable = rx8010_alarm_irq_enable;
+			return err;
 		}
+
+		rtc_ops = &rx8010_rtc_ops_alarm;
+	} else {
+		rtc_ops = &rx8010_rtc_ops_default;
 	}
 
 	rx8010->rtc = devm_rtc_device_register(&client->dev, client->name,
-		&rx8010_rtc_ops, THIS_MODULE);
+					       rtc_ops, THIS_MODULE);
 
 	if (IS_ERR(rx8010->rtc)) {
 		dev_err(&client->dev, "unable to register the class device\n");
diff --git a/drivers/s390/crypto/pkey_api.c b/drivers/s390/crypto/pkey_api.c
index 5c9898e934d9..0658aa5030c6 100644
--- a/drivers/s390/crypto/pkey_api.c
+++ b/drivers/s390/crypto/pkey_api.c
@@ -33,9 +33,6 @@ MODULE_DESCRIPTION("s390 protected key interface");
 #define KEYBLOBBUFSIZE 8192  /* key buffer size used for internal processing */
 #define MAXAPQNSINLIST 64    /* max 64 apqns within a apqn list */
 
-/* mask of available pckmo subfunctions, fetched once at module init */
-static cpacf_mask_t pckmo_functions;
-
 /*
  * debug feature data and functions
  */
@@ -78,6 +75,9 @@ static int pkey_clr2protkey(u32 keytype,
 			    const struct pkey_clrkey *clrkey,
 			    struct pkey_protkey *protkey)
 {
+	/* mask of available pckmo subfunctions */
+	static cpacf_mask_t pckmo_functions;
+
 	long fc;
 	int keysize;
 	u8 paramblock[64];
@@ -101,11 +101,13 @@ static int pkey_clr2protkey(u32 keytype,
 		return -EINVAL;
 	}
 
-	/*
-	 * Check if the needed pckmo subfunction is available.
-	 * These subfunctions can be enabled/disabled by customers
-	 * in the LPAR profile or may even change on the fly.
-	 */
+	/* Did we already check for PCKMO ? */
+	if (!pckmo_functions.bytes[0]) {
+		/* no, so check now */
+		if (!cpacf_query(CPACF_PCKMO, &pckmo_functions))
+			return -ENODEV;
+	}
+	/* check for the pckmo subfunction we need now */
 	if (!cpacf_test_func(&pckmo_functions, fc)) {
 		DEBUG_ERR("%s pckmo functions not available\n", __func__);
 		return -ENODEV;
@@ -1504,7 +1506,7 @@ static struct miscdevice pkey_dev = {
  */
 static int __init pkey_init(void)
 {
-	cpacf_mask_t kmc_functions;
+	cpacf_mask_t func_mask;
 
 	/*
 	 * The pckmo instruction should be available - even if we don't
@@ -1512,15 +1514,15 @@ static int __init pkey_init(void)
 	 * is also the minimum level for the kmc instructions which
 	 * are able to work with protected keys.
 	 */
-	if (!cpacf_query(CPACF_PCKMO, &pckmo_functions))
+	if (!cpacf_query(CPACF_PCKMO, &func_mask))
 		return -ENODEV;
 
 	/* check for kmc instructions available */
-	if (!cpacf_query(CPACF_KMC, &kmc_functions))
+	if (!cpacf_query(CPACF_KMC, &func_mask))
 		return -ENODEV;
-	if (!cpacf_test_func(&kmc_functions, CPACF_KMC_PAES_128) ||
-	    !cpacf_test_func(&kmc_functions, CPACF_KMC_PAES_192) ||
-	    !cpacf_test_func(&kmc_functions, CPACF_KMC_PAES_256))
+	if (!cpacf_test_func(&func_mask, CPACF_KMC_PAES_128) ||
+	    !cpacf_test_func(&func_mask, CPACF_KMC_PAES_192) ||
+	    !cpacf_test_func(&func_mask, CPACF_KMC_PAES_256))
 		return -ENODEV;
 
 	pkey_debug_init();
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index c5711c659b51..1ab0a61e3fb5 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -807,13 +807,29 @@ static void purge_requests(struct ibmvscsi_host_data *hostdata, int error_code)
 }
 
 /**
+ * ibmvscsi_set_request_limit - Set the adapter request_limit in response to
+ * an adapter failure, reset, or SRP Login. Done under host lock to prevent
+ * race with SCSI command submission.
+ * @hostdata:	adapter to adjust
+ * @limit:	new request limit
+ */
+static void ibmvscsi_set_request_limit(struct ibmvscsi_host_data *hostdata, int limit)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(hostdata->host->host_lock, flags);
+	atomic_set(&hostdata->request_limit, limit);
+	spin_unlock_irqrestore(hostdata->host->host_lock, flags);
+}
+
+/**
  * ibmvscsi_reset_host - Reset the connection to the server
  * @hostdata:	struct ibmvscsi_host_data to reset
 */
 static void ibmvscsi_reset_host(struct ibmvscsi_host_data *hostdata)
 {
 	scsi_block_requests(hostdata->host);
-	atomic_set(&hostdata->request_limit, 0);
+	ibmvscsi_set_request_limit(hostdata, 0);
 
 	purge_requests(hostdata, DID_ERROR);
 	hostdata->action = IBMVSCSI_HOST_ACTION_RESET;
@@ -1146,13 +1162,13 @@ static void login_rsp(struct srp_event_struct *evt_struct)
 		dev_info(hostdata->dev, "SRP_LOGIN_REJ reason %u\n",
 			 evt_struct->xfer_iu->srp.login_rej.reason);
 		/* Login failed.  */
-		atomic_set(&hostdata->request_limit, -1);
+		ibmvscsi_set_request_limit(hostdata, -1);
 		return;
 	default:
 		dev_err(hostdata->dev, "Invalid login response typecode 0x%02x!\n",
 			evt_struct->xfer_iu->srp.login_rsp.opcode);
 		/* Login failed.  */
-		atomic_set(&hostdata->request_limit, -1);
+		ibmvscsi_set_request_limit(hostdata, -1);
 		return;
 	}
 
@@ -1163,7 +1179,7 @@ static void login_rsp(struct srp_event_struct *evt_struct)
 	 * This value is set rather than added to request_limit because
 	 * request_limit could have been set to -1 by this client.
 	 */
-	atomic_set(&hostdata->request_limit,
+	ibmvscsi_set_request_limit(hostdata,
 		   be32_to_cpu(evt_struct->xfer_iu->srp.login_rsp.req_lim_delta));
 
 	/* If we had any pending I/Os, kick them */
@@ -1195,13 +1211,13 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
 	login->req_buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT |
 					 SRP_BUF_FORMAT_INDIRECT);
 
-	spin_lock_irqsave(hostdata->host->host_lock, flags);
 	/* Start out with a request limit of 0, since this is negotiated in
 	 * the login request we are just sending and login requests always
 	 * get sent by the driver regardless of request_limit.
 	 */
-	atomic_set(&hostdata->request_limit, 0);
+	ibmvscsi_set_request_limit(hostdata, 0);
 
+	spin_lock_irqsave(hostdata->host->host_lock, flags);
 	rc = ibmvscsi_send_srp_event(evt_struct, hostdata, login_timeout * 2);
 	spin_unlock_irqrestore(hostdata->host->host_lock, flags);
 	dev_info(hostdata->dev, "sent SRP login\n");
@@ -1781,7 +1797,7 @@ static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
 		return;
 	case VIOSRP_CRQ_XPORT_EVENT:	/* Hypervisor telling us the connection is closed */
 		scsi_block_requests(hostdata->host);
-		atomic_set(&hostdata->request_limit, 0);
+		ibmvscsi_set_request_limit(hostdata, 0);
 		if (crq->format == 0x06) {
 			/* We need to re-setup the interpartition connection */
 			dev_info(hostdata->dev, "Re-enabling adapter!\n");
@@ -2137,12 +2153,12 @@ static void ibmvscsi_do_work(struct ibmvscsi_host_data *hostdata)
 	}
 
 	hostdata->action = IBMVSCSI_HOST_ACTION_NONE;
+	spin_unlock_irqrestore(hostdata->host->host_lock, flags);
 
 	if (rc) {
-		atomic_set(&hostdata->request_limit, -1);
+		ibmvscsi_set_request_limit(hostdata, -1);
 		dev_err(hostdata->dev, "error after %s\n", action);
 	}
-	spin_unlock_irqrestore(hostdata->host->host_lock, flags);
 
 	scsi_unblock_requests(hostdata->host);
 }
@@ -2226,7 +2242,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id)
 	init_waitqueue_head(&hostdata->work_wait_q);
 	hostdata->host = host;
 	hostdata->dev = dev;
-	atomic_set(&hostdata->request_limit, -1);
+	ibmvscsi_set_request_limit(hostdata, -1);
 	hostdata->host->max_sectors = IBMVSCSI_MAX_SECTORS_DEFAULT;
 
 	if (map_persist_bufs(hostdata)) {
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index d84d95cac2a1..412009e2b948 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1230,14 +1230,15 @@ void qlt_schedule_sess_for_deletion(struct fc_port *sess)
 	case DSC_DELETE_PEND:
 		return;
 	case DSC_DELETED:
-		if (tgt && tgt->tgt_stop && (tgt->sess_count == 0))
-			wake_up_all(&tgt->waitQ);
-		if (sess->vha->fcport_count == 0)
-			wake_up_all(&sess->vha->fcport_waitQ);
-
 		if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] &&
-			!sess->plogi_link[QLT_PLOGI_LINK_CONFLICT])
+			!sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) {
+			if (tgt && tgt->tgt_stop && tgt->sess_count == 0)
+				wake_up_all(&tgt->waitQ);
+
+			if (sess->vha->fcport_count == 0)
+				wake_up_all(&sess->vha->fcport_waitQ);
 			return;
+		}
 		break;
 	case DSC_UPD_FCPORT:
 		/*
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 058079f915f1..79232cef1af1 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1715,15 +1715,16 @@ static void scsi_sysfs_add_devices(struct Scsi_Host *shost)
  */
 static struct async_scan_data *scsi_prep_async_scan(struct Scsi_Host *shost)
 {
-	struct async_scan_data *data;
+	struct async_scan_data *data = NULL;
 	unsigned long flags;
 
 	if (strncmp(scsi_scan_type, "sync", 4) == 0)
 		return NULL;
 
+	mutex_lock(&shost->scan_mutex);
 	if (shost->async_scan) {
 		shost_printk(KERN_DEBUG, shost, "%s called twice\n", __func__);
-		return NULL;
+		goto err;
 	}
 
 	data = kmalloc(sizeof(*data), GFP_KERNEL);
@@ -1734,7 +1735,6 @@ static struct async_scan_data *scsi_prep_async_scan(struct Scsi_Host *shost)
 		goto err;
 	init_completion(&data->prev_finished);
 
-	mutex_lock(&shost->scan_mutex);
 	spin_lock_irqsave(shost->host_lock, flags);
 	shost->async_scan = 1;
 	spin_unlock_irqrestore(shost->host_lock, flags);
@@ -1749,6 +1749,7 @@ static struct async_scan_data *scsi_prep_async_scan(struct Scsi_Host *shost)
 	return data;
 
  err:
+	mutex_unlock(&shost->scan_mutex);
 	kfree(data);
 	return NULL;
 }
diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index c88f5d99c906..cfd9176e6413 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -1245,18 +1245,6 @@ static int bcm2835_spi_setup(struct spi_device *spi)
 	if (!chip)
 		return 0;
 
-	/*
-	 * Retrieve the corresponding GPIO line used for CS.
-	 * The inversion semantics will be handled by the GPIO core
-	 * code, so we pass GPIOS_OUT_LOW for "unasserted" and
-	 * the correct flag for inversion semantics. The SPI_CS_HIGH
-	 * on spi->mode cannot be checked for polarity in this case
-	 * as the flag use_gpio_descriptors enforces SPI_CS_HIGH.
-	 */
-	if (of_property_read_bool(spi->dev.of_node, "spi-cs-high"))
-		lflags = GPIO_ACTIVE_HIGH;
-	else
-		lflags = GPIO_ACTIVE_LOW;
 	spi->cs_gpiod = gpiochip_request_own_desc(chip, 8 - spi->chip_select,
 						  DRV_NAME,
 						  lflags,
diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c
index fa597e27be17..e60aff990395 100644
--- a/drivers/spi/spi-sprd.c
+++ b/drivers/spi/spi-sprd.c
@@ -563,11 +563,11 @@ static int sprd_spi_dma_request(struct sprd_spi *ss)
 
 	ss->dma.dma_chan[SPRD_SPI_TX]  = dma_request_chan(ss->dev, "tx_chn");
 	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_TX])) {
+		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]);
 		if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]) == -EPROBE_DEFER)
 			return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
 
 		dev_err(ss->dev, "request TX DMA channel failed!\n");
-		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]);
 		return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
 	}
 
diff --git a/drivers/staging/comedi/drivers/cb_pcidas.c b/drivers/staging/comedi/drivers/cb_pcidas.c
index 02ae00c95313..1893c70de0b9 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas.c
@@ -1342,6 +1342,7 @@ static int cb_pcidas_auto_attach(struct comedi_device *dev,
 		if (dev->irq && board->has_ao_fifo) {
 			dev->write_subdev = s;
 			s->subdev_flags	|= SDF_CMD_WRITE;
+			s->len_chanlist	= s->n_chan;
 			s->do_cmdtest	= cb_pcidas_ao_cmdtest;
 			s->do_cmd	= cb_pcidas_ao_cmd;
 			s->cancel	= cb_pcidas_ao_cancel;
diff --git a/drivers/staging/fieldbus/anybuss/arcx-anybus.c b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
index 2ecffa42e561..fbe693816f07 100644
--- a/drivers/staging/fieldbus/anybuss/arcx-anybus.c
+++ b/drivers/staging/fieldbus/anybuss/arcx-anybus.c
@@ -297,7 +297,7 @@ static int controller_probe(struct platform_device *pdev)
 	regulator = devm_regulator_register(dev, &can_power_desc, &config);
 	if (IS_ERR(regulator)) {
 		err = PTR_ERR(regulator);
-		goto out_reset;
+		goto out_ida;
 	}
 	/* make controller info visible to userspace */
 	cd->class_dev = kzalloc(sizeof(*cd->class_dev), GFP_KERNEL);
diff --git a/drivers/staging/octeon/ethernet-mdio.c b/drivers/staging/octeon/ethernet-mdio.c
index ffac0c4b3f5c..022c71e69a23 100644
--- a/drivers/staging/octeon/ethernet-mdio.c
+++ b/drivers/staging/octeon/ethernet-mdio.c
@@ -147,12 +147,6 @@ int cvm_oct_phy_setup_device(struct net_device *dev)
 
 	phy_node = of_parse_phandle(priv->of_node, "phy-handle", 0);
 	if (!phy_node && of_phy_is_fixed_link(priv->of_node)) {
-		int rc;
-
-		rc = of_phy_register_fixed_link(priv->of_node);
-		if (rc)
-			return rc;
-
 		phy_node = of_node_get(priv->of_node);
 	}
 	if (!phy_node)
diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
index 0e65955c746b..9a242d68a26b 100644
--- a/drivers/staging/octeon/ethernet-rx.c
+++ b/drivers/staging/octeon/ethernet-rx.c
@@ -69,15 +69,17 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work)
 	else
 		port = work->word1.cn38xx.ipprt;
 
-	if ((work->word2.snoip.err_code == 10) && (work->word1.len <= 64)) {
+	if ((work->word2.snoip.err_code == 10) && (work->word1.len <= 64))
 		/*
 		 * Ignore length errors on min size packets. Some
 		 * equipment incorrectly pads packets to 64+4FCS
 		 * instead of 60+4FCS.  Note these packets still get
 		 * counted as frame errors.
 		 */
-	} else if (work->word2.snoip.err_code == 5 ||
-		   work->word2.snoip.err_code == 7) {
+		return 0;
+
+	if (work->word2.snoip.err_code == 5 ||
+	    work->word2.snoip.err_code == 7) {
 		/*
 		 * We received a packet with either an alignment error
 		 * or a FCS error. This may be signalling that we are
@@ -108,7 +110,10 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work)
 				/* Port received 0xd5 preamble */
 				work->packet_ptr.s.addr += i + 1;
 				work->word1.len -= i + 5;
-			} else if ((*ptr & 0xf) == 0xd) {
+				return 0;
+			}
+
+			if ((*ptr & 0xf) == 0xd) {
 				/* Port received 0xd preamble */
 				work->packet_ptr.s.addr += i;
 				work->word1.len -= i + 4;
@@ -118,21 +123,20 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work)
 					    ((*(ptr + 1) & 0xf) << 4);
 					ptr++;
 				}
-			} else {
-				printk_ratelimited("Port %d unknown preamble, packet dropped\n",
-						   port);
-				cvm_oct_free_work(work);
-				return 1;
+				return 0;
 			}
+
+			printk_ratelimited("Port %d unknown preamble, packet dropped\n",
+					   port);
+			cvm_oct_free_work(work);
+			return 1;
 		}
-	} else {
-		printk_ratelimited("Port %d receive error code %d, packet dropped\n",
-				   port, work->word2.snoip.err_code);
-		cvm_oct_free_work(work);
-		return 1;
 	}
 
-	return 0;
+	printk_ratelimited("Port %d receive error code %d, packet dropped\n",
+			   port, work->word2.snoip.err_code);
+	cvm_oct_free_work(work);
+	return 1;
 }
 
 static void copy_segments_to_skb(cvmx_wqe_t *work, struct sk_buff *skb)
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index cf8e9a23ebf9..77b7c1fd9d78 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -13,6 +13,7 @@
 #include <linux/phy.h>
 #include <linux/slab.h>
 #include <linux/interrupt.h>
+#include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
@@ -894,6 +895,14 @@ static int cvm_oct_probe(struct platform_device *pdev)
 				break;
 			}
 
+			if (priv->of_node && of_phy_is_fixed_link(priv->of_node)) {
+				if (of_phy_register_fixed_link(priv->of_node)) {
+					netdev_err(dev, "Failed to register fixed link for interface %d, port %d\n",
+						   interface, priv->port);
+					dev->netdev_ops = NULL;
+				}
+			}
+
 			if (!dev->netdev_ops) {
 				free_netdev(dev);
 			} else if (register_netdev(dev) < 0) {
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 2b59a4305077..e9eb454c2472 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -316,7 +316,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
 	 */
 	baud = tty_termios_baud_rate(termios);
 
-	serial8250_do_set_termios(port, termios, old);
+	serial8250_do_set_termios(port, termios, NULL);
 
 	tty_termios_encode_baud_rate(termios, baud, baud);
 
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 26b3c298fc09..b822e54f2d13 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -363,6 +363,12 @@ static inline bool is_imx7ulp_lpuart(struct lpuart_port *sport)
 	return sport->devtype == IMX7ULP_LPUART;
 }
 
+static inline bool is_layerscape_lpuart(struct lpuart_port *sport)
+{
+	return (sport->devtype == LS1021A_LPUART ||
+		sport->devtype == LS1028A_LPUART);
+}
+
 static inline bool is_imx8qxp_lpuart(struct lpuart_port *sport)
 {
 	return sport->devtype == IMX8QXP_LPUART;
@@ -1896,6 +1902,17 @@ static int lpuart32_startup(struct uart_port *port)
 	sport->rxfifo_size = UARTFIFO_DEPTH((temp >> UARTFIFO_RXSIZE_OFF) &
 					    UARTFIFO_FIFOSIZE_MASK);
 
+	/*
+	 * The LS1021A and LS1028A have a fixed FIFO depth of 16 words.
+	 * Although they support the RX/TXSIZE fields, their encoding is
+	 * different. Eg the reference manual states 0b101 is 16 words.
+	 */
+	if (is_layerscape_lpuart(sport)) {
+		sport->rxfifo_size = 16;
+		sport->txfifo_size = 16;
+		sport->port.fifosize = sport->txfifo_size;
+	}
+
 	lpuart32_hw_setup(sport);
 
 	return 0;
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index d22ccb32aa9b..8507f18900d0 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -1283,6 +1283,9 @@ static int __init serial_txx9_init(void)
 
 #ifdef ENABLE_SERIAL_TXX9_PCI
 	ret = pci_register_driver(&serial_txx9_pci_driver);
+	if (ret) {
+		platform_driver_unregister(&serial_txx9_plat_driver);
+	}
 #endif
 	if (ret == 0)
 		goto out;
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 568b2171f335..b6e78fdbfdff 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -742,8 +742,13 @@ static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
 		return;
 
 	if ((unsigned)value < ARRAY_SIZE(func_table)) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&func_buf_lock, flags);
 		if (func_table[value])
 			puts_queue(vc, func_table[value]);
+		spin_unlock_irqrestore(&func_buf_lock, flags);
+
 	} else
 		pr_err("k_fn called with value=%d\n", value);
 }
@@ -1990,13 +1995,11 @@ out:
 #undef s
 #undef v
 
-/* FIXME: This one needs untangling and locking */
+/* FIXME: This one needs untangling */
 int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 {
 	struct kbsentry *kbs;
-	char *p;
 	u_char *q;
-	u_char __user *up;
 	int sz, fnw_sz;
 	int delta;
 	char *first_free, *fj, *fnw;
@@ -2022,23 +2025,19 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 	i = kbs->kb_func;
 
 	switch (cmd) {
-	case KDGKBSENT:
-		sz = sizeof(kbs->kb_string) - 1; /* sz should have been
-						  a struct member */
-		up = user_kdgkb->kb_string;
-		p = func_table[i];
-		if(p)
-			for ( ; *p && sz; p++, sz--)
-				if (put_user(*p, up++)) {
-					ret = -EFAULT;
-					goto reterr;
-				}
-		if (put_user('\0', up)) {
-			ret = -EFAULT;
-			goto reterr;
-		}
-		kfree(kbs);
-		return ((p && *p) ? -EOVERFLOW : 0);
+	case KDGKBSENT: {
+		/* size should have been a struct member */
+		ssize_t len = sizeof(user_kdgkb->kb_string);
+
+		spin_lock_irqsave(&func_buf_lock, flags);
+		len = strlcpy(kbs->kb_string, func_table[i] ? : "", len);
+		spin_unlock_irqrestore(&func_buf_lock, flags);
+
+		ret = copy_to_user(user_kdgkb->kb_string, kbs->kb_string,
+				len + 1) ? -EFAULT : 0;
+
+		goto reterr;
+	}
 	case KDSKBSENT:
 		if (!perm) {
 			ret = -EPERM;
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index d07a9c9c7608..c55b6d7ccaf7 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -4620,27 +4620,6 @@ static int con_font_default(struct vc_data *vc, struct console_font_op *op)
 	return rc;
 }
 
-static int con_font_copy(struct vc_data *vc, struct console_font_op *op)
-{
-	int con = op->height;
-	int rc;
-
-
-	console_lock();
-	if (vc->vc_mode != KD_TEXT)
-		rc = -EINVAL;
-	else if (!vc->vc_sw->con_font_copy)
-		rc = -ENOSYS;
-	else if (con < 0 || !vc_cons_allocated(con))
-		rc = -ENOTTY;
-	else if (con == vc->vc_num)	/* nothing to do */
-		rc = 0;
-	else
-		rc = vc->vc_sw->con_font_copy(vc, con);
-	console_unlock();
-	return rc;
-}
-
 int con_font_op(struct vc_data *vc, struct console_font_op *op)
 {
 	switch (op->op) {
@@ -4651,7 +4630,8 @@ int con_font_op(struct vc_data *vc, struct console_font_op *op)
 	case KD_FONT_OP_SET_DEFAULT:
 		return con_font_default(vc, op);
 	case KD_FONT_OP_COPY:
-		return con_font_copy(vc, op);
+		/* was buggy and never really used */
+		return -EINVAL;
 	}
 	return -ENOSYS;
 }
diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c
index cbc85c995d92..4f51be17427c 100644
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -244,7 +244,7 @@ int vt_waitactive(int n)
 
 
 static inline int 
-do_fontx_ioctl(int cmd, struct consolefontdesc __user *user_cfd, int perm, struct console_font_op *op)
+do_fontx_ioctl(struct vc_data *vc, int cmd, struct consolefontdesc __user *user_cfd, int perm, struct console_font_op *op)
 {
 	struct consolefontdesc cfdarg;
 	int i;
@@ -262,15 +262,16 @@ do_fontx_ioctl(int cmd, struct consolefontdesc __user *user_cfd, int perm, struc
 		op->height = cfdarg.charheight;
 		op->charcount = cfdarg.charcount;
 		op->data = cfdarg.chardata;
-		return con_font_op(vc_cons[fg_console].d, op);
-	case GIO_FONTX: {
+		return con_font_op(vc, op);
+
+	case GIO_FONTX:
 		op->op = KD_FONT_OP_GET;
 		op->flags = KD_FONT_FLAG_OLD;
 		op->width = 8;
 		op->height = cfdarg.charheight;
 		op->charcount = cfdarg.charcount;
 		op->data = cfdarg.chardata;
-		i = con_font_op(vc_cons[fg_console].d, op);
+		i = con_font_op(vc, op);
 		if (i)
 			return i;
 		cfdarg.charheight = op->height;
@@ -278,7 +279,6 @@ do_fontx_ioctl(int cmd, struct consolefontdesc __user *user_cfd, int perm, struc
 		if (copy_to_user(user_cfd, &cfdarg, sizeof(struct consolefontdesc)))
 			return -EFAULT;
 		return 0;
-		}
 	}
 	return -EINVAL;
 }
@@ -924,7 +924,7 @@ int vt_ioctl(struct tty_struct *tty,
 		op.height = 0;
 		op.charcount = 256;
 		op.data = up;
-		ret = con_font_op(vc_cons[fg_console].d, &op);
+		ret = con_font_op(vc, &op);
 		break;
 	}
 
@@ -935,7 +935,7 @@ int vt_ioctl(struct tty_struct *tty,
 		op.height = 32;
 		op.charcount = 256;
 		op.data = up;
-		ret = con_font_op(vc_cons[fg_console].d, &op);
+		ret = con_font_op(vc, &op);
 		break;
 	}
 
@@ -952,7 +952,7 @@ int vt_ioctl(struct tty_struct *tty,
 
 	case PIO_FONTX:
 	case GIO_FONTX:
-		ret = do_fontx_ioctl(cmd, up, perm, &op);
+		ret = do_fontx_ioctl(vc, cmd, up, perm, &op);
 		break;
 
 	case PIO_FONTRESET:
@@ -969,11 +969,11 @@ int vt_ioctl(struct tty_struct *tty,
 		{
 		op.op = KD_FONT_OP_SET_DEFAULT;
 		op.data = NULL;
-		ret = con_font_op(vc_cons[fg_console].d, &op);
+		ret = con_font_op(vc, &op);
 		if (ret)
 			break;
 		console_lock();
-		con_set_default_unimap(vc_cons[fg_console].d);
+		con_set_default_unimap(vc);
 		console_unlock();
 		break;
 		}
@@ -1100,8 +1100,9 @@ struct compat_consolefontdesc {
 };
 
 static inline int
-compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd,
-			 int perm, struct console_font_op *op)
+compat_fontx_ioctl(struct vc_data *vc, int cmd,
+		   struct compat_consolefontdesc __user *user_cfd,
+		   int perm, struct console_font_op *op)
 {
 	struct compat_consolefontdesc cfdarg;
 	int i;
@@ -1119,7 +1120,8 @@ compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd,
 		op->height = cfdarg.charheight;
 		op->charcount = cfdarg.charcount;
 		op->data = compat_ptr(cfdarg.chardata);
-		return con_font_op(vc_cons[fg_console].d, op);
+		return con_font_op(vc, op);
+
 	case GIO_FONTX:
 		op->op = KD_FONT_OP_GET;
 		op->flags = KD_FONT_FLAG_OLD;
@@ -1127,7 +1129,7 @@ compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd,
 		op->height = cfdarg.charheight;
 		op->charcount = cfdarg.charcount;
 		op->data = compat_ptr(cfdarg.chardata);
-		i = con_font_op(vc_cons[fg_console].d, op);
+		i = con_font_op(vc, op);
 		if (i)
 			return i;
 		cfdarg.charheight = op->height;
@@ -1217,7 +1219,7 @@ long vt_compat_ioctl(struct tty_struct *tty,
 	 */
 	case PIO_FONTX:
 	case GIO_FONTX:
-		return compat_fontx_ioctl(cmd, up, perm, &op);
+		return compat_fontx_ioctl(vc, cmd, up, perm, &op);
 
 	case KDFONTOP:
 		return compat_kdfontop_ioctl(up, perm, &op, vc);
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index ac18542ee4fe..ded1d9296f07 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -1019,8 +1019,6 @@ void uio_unregister_device(struct uio_info *info)
 
 	idev = info->uio_dev;
 
-	uio_free_minor(idev);
-
 	mutex_lock(&idev->info_lock);
 	uio_dev_del_attributes(idev);
 
@@ -1035,6 +1033,8 @@ void uio_unregister_device(struct uio_info *info)
 
 	device_unregister(&idev->dev);
 
+	uio_free_minor(idev);
+
 	return;
 }
 EXPORT_SYMBOL_GPL(uio_unregister_device);
diff --git a/drivers/usb/cdns3/gadget.h b/drivers/usb/cdns3/gadget.h
index 35a4e830f955..81081000d656 100644
--- a/drivers/usb/cdns3/gadget.h
+++ b/drivers/usb/cdns3/gadget.h
@@ -998,7 +998,7 @@ struct cdns3_trb {
 #define TRB_TDL_SS_SIZE_GET(p)	(((p) & GENMASK(23, 17)) >> 17)
 
 /* transfer_len bitmasks - bits 31:24 */
-#define TRB_BURST_LEN(p)	(((p) << 24) & GENMASK(31, 24))
+#define TRB_BURST_LEN(p)	((unsigned int)((p) << 24) & GENMASK(31, 24))
 #define TRB_BURST_LEN_GET(p)	(((p) & GENMASK(31, 24)) >> 24)
 
 /* Data buffer pointer bitmasks*/
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 808722b8294a..ed99d98172f4 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -507,6 +507,7 @@ static void acm_read_bulk_callback(struct urb *urb)
 			"%s - cooling babbling device\n", __func__);
 		usb_mark_last_busy(acm->dev);
 		set_bit(rb->index, &acm->urbs_in_error_delay);
+		set_bit(ACM_ERROR_DELAY, &acm->flags);
 		cooldown = true;
 		break;
 	default:
@@ -532,7 +533,7 @@ static void acm_read_bulk_callback(struct urb *urb)
 
 	if (stopped || stalled || cooldown) {
 		if (stalled)
-			schedule_work(&acm->work);
+			schedule_delayed_work(&acm->dwork, 0);
 		else if (cooldown)
 			schedule_delayed_work(&acm->dwork, HZ / 2);
 		return;
@@ -562,13 +563,13 @@ static void acm_write_bulk(struct urb *urb)
 	acm_write_done(acm, wb);
 	spin_unlock_irqrestore(&acm->write_lock, flags);
 	set_bit(EVENT_TTY_WAKEUP, &acm->flags);
-	schedule_work(&acm->work);
+	schedule_delayed_work(&acm->dwork, 0);
 }
 
 static void acm_softint(struct work_struct *work)
 {
 	int i;
-	struct acm *acm = container_of(work, struct acm, work);
+	struct acm *acm = container_of(work, struct acm, dwork.work);
 
 	if (test_bit(EVENT_RX_STALL, &acm->flags)) {
 		smp_mb(); /* against acm_suspend() */
@@ -584,7 +585,7 @@ static void acm_softint(struct work_struct *work)
 	if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) {
 		for (i = 0; i < acm->rx_buflimit; i++)
 			if (test_and_clear_bit(i, &acm->urbs_in_error_delay))
-					acm_submit_read_urb(acm, i, GFP_NOIO);
+				acm_submit_read_urb(acm, i, GFP_KERNEL);
 	}
 
 	if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags))
@@ -1364,7 +1365,6 @@ made_compressed_probe:
 	acm->ctrlsize = ctrlsize;
 	acm->readsize = readsize;
 	acm->rx_buflimit = num_rx_buf;
-	INIT_WORK(&acm->work, acm_softint);
 	INIT_DELAYED_WORK(&acm->dwork, acm_softint);
 	init_waitqueue_head(&acm->wioctl);
 	spin_lock_init(&acm->write_lock);
@@ -1574,7 +1574,6 @@ static void acm_disconnect(struct usb_interface *intf)
 	}
 
 	acm_kill_urbs(acm);
-	cancel_work_sync(&acm->work);
 	cancel_delayed_work_sync(&acm->dwork);
 
 	tty_unregister_device(acm_tty_driver, acm->minor);
@@ -1617,7 +1616,6 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message)
 		return 0;
 
 	acm_kill_urbs(acm);
-	cancel_work_sync(&acm->work);
 	cancel_delayed_work_sync(&acm->dwork);
 	acm->urbs_in_error_delay = 0;
 
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index cd5e9d8ab237..b95ff769072e 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -112,8 +112,7 @@ struct acm {
 #		define ACM_ERROR_DELAY	3
 	unsigned long urbs_in_error_delay;		/* these need to be restarted after a delay */
 	struct usb_cdc_line_coding line;		/* bits, stop, parity */
-	struct work_struct work;			/* work queue entry for various purposes*/
-	struct delayed_work dwork;			/* for cool downs needed in error recovery */
+	struct delayed_work dwork;		        /* work queue entry for various purposes */
 	unsigned int ctrlin;				/* input control lines (DCD, DSR, RI, break, overruns) */
 	unsigned int ctrlout;				/* output control lines (DTR, RTS) */
 	struct async_icount iocount;			/* counters for control line changes */
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 4ee810531098..5ad14cdd9762 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -378,6 +378,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	{ USB_DEVICE(0x0926, 0x3333), .driver_info =
 			USB_QUIRK_CONFIG_INTF_STRINGS },
 
+	/* Kingston DataTraveler 3.0 */
+	{ USB_DEVICE(0x0951, 0x1666), .driver_info = USB_QUIRK_NO_LPM },
+
 	/* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
 	{ USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
 
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 86a62ab4e1a9..873e96e80552 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1653,6 +1653,17 @@ static int dwc3_probe(struct platform_device *pdev)
 
 err5:
 	dwc3_event_buffers_cleanup(dwc);
+
+	usb_phy_shutdown(dwc->usb2_phy);
+	usb_phy_shutdown(dwc->usb3_phy);
+	phy_exit(dwc->usb2_generic_phy);
+	phy_exit(dwc->usb3_generic_phy);
+
+	usb_phy_set_suspend(dwc->usb2_phy, 1);
+	usb_phy_set_suspend(dwc->usb3_phy, 1);
+	phy_power_off(dwc->usb2_generic_phy);
+	phy_power_off(dwc->usb3_generic_phy);
+
 	dwc3_ulpi_exit(dwc);
 
 err4:
@@ -1688,9 +1699,9 @@ static int dwc3_remove(struct platform_device *pdev)
 	dwc3_core_exit(dwc);
 	dwc3_ulpi_exit(dwc);
 
-	pm_runtime_put_sync(&pdev->dev);
-	pm_runtime_allow(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_put_noidle(&pdev->dev);
+	pm_runtime_set_suspended(&pdev->dev);
 
 	dwc3_free_event_buffers(dwc);
 	dwc3_free_scratch_buffers(dwc);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 9a6a9c39bf20..207e888d40c8 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -718,6 +718,7 @@ struct dwc3_ep {
 #define DWC3_EP_END_TRANSFER_PENDING BIT(4)
 #define DWC3_EP_PENDING_REQUEST	BIT(5)
 #define DWC3_EP_DELAY_START	BIT(6)
+#define DWC3_EP_PENDING_CLEAR_STALL	BIT(11)
 
 	/* This last one is specific to EP0 */
 #define DWC3_EP0_DIR_IN		BIT(31)
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 139474c3e77b..ba88039449e0 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -147,7 +147,8 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc)
 
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
 		if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||
-				pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) {
+		    pdev->device == PCI_DEVICE_ID_INTEL_BXT_M ||
+		    pdev->device == PCI_DEVICE_ID_INTEL_EHLLP) {
 			guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);
 			dwc->has_dsm_for_pm = true;
 		}
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 6dee4dabc0a4..4de8e5f091cb 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -524,6 +524,11 @@ static int dwc3_ep0_handle_endpoint(struct dwc3 *dwc,
 		ret = __dwc3_gadget_ep_set_halt(dep, set, true);
 		if (ret)
 			return -EINVAL;
+
+		/* ClearFeature(Halt) may need delayed status */
+		if (!set && (dep->flags & DWC3_EP_END_TRANSFER_PENDING))
+			return USB_GADGET_DELAYED_STATUS;
+
 		break;
 	default:
 		return -EINVAL;
@@ -942,12 +947,16 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
 static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
 		struct dwc3_ep *dep, struct dwc3_request *req)
 {
+	unsigned int		trb_length = 0;
 	int			ret;
 
 	req->direction = !!dep->number;
 
 	if (req->request.length == 0) {
-		dwc3_ep0_prepare_one_trb(dep, dwc->ep0_trb_addr, 0,
+		if (!req->direction)
+			trb_length = dep->endpoint.maxpacket;
+
+		dwc3_ep0_prepare_one_trb(dep, dwc->bounce_addr, trb_length,
 				DWC3_TRBCTL_CONTROL_DATA, false);
 		ret = dwc3_ep0_start_trans(dep);
 	} else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket)
@@ -994,9 +1003,12 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
 
 		req->trb = &dwc->ep0_trb[dep->trb_enqueue - 1];
 
+		if (!req->direction)
+			trb_length = dep->endpoint.maxpacket;
+
 		/* Now prepare one extra TRB to align transfer size */
 		dwc3_ep0_prepare_one_trb(dep, dwc->bounce_addr,
-					 0, DWC3_TRBCTL_CONTROL_DATA,
+					 trb_length, DWC3_TRBCTL_CONTROL_DATA,
 					 false);
 		ret = dwc3_ep0_start_trans(dep);
 	} else {
@@ -1042,6 +1054,18 @@ static void dwc3_ep0_do_control_status(struct dwc3 *dwc,
 	__dwc3_ep0_do_control_status(dwc, dep);
 }
 
+void dwc3_ep0_send_delayed_status(struct dwc3 *dwc)
+{
+	unsigned int direction = !dwc->ep0_expect_in;
+
+	dwc->delayed_status = false;
+
+	if (dwc->ep0state != EP0_STATUS_PHASE)
+		return;
+
+	__dwc3_ep0_do_control_status(dwc, dwc->eps[direction]);
+}
+
 static void dwc3_ep0_end_control_data(struct dwc3 *dwc, struct dwc3_ep *dep)
 {
 	struct dwc3_gadget_ep_cmd_params params;
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 48daeda60510..ad88f77a950c 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1061,6 +1061,8 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep,
 	struct scatterlist *s;
 	int		i;
 	unsigned int length = req->request.length;
+	unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);
+	unsigned int rem = length % maxp;
 	unsigned int remaining = req->request.num_mapped_sgs
 		- req->num_queued_sgs;
 
@@ -1072,8 +1074,6 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep,
 		length -= sg_dma_len(s);
 
 	for_each_sg(sg, s, remaining, i) {
-		unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);
-		unsigned int rem = length % maxp;
 		unsigned int trb_length;
 		unsigned chain = true;
 
@@ -1525,8 +1525,13 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 	list_add_tail(&req->list, &dep->pending_list);
 	req->status = DWC3_REQUEST_STATUS_QUEUED;
 
-	/* Start the transfer only after the END_TRANSFER is completed */
-	if (dep->flags & DWC3_EP_END_TRANSFER_PENDING) {
+	/*
+	 * Start the transfer only after the END_TRANSFER is completed
+	 * and endpoint STALL is cleared.
+	 */
+	if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) ||
+	    (dep->flags & DWC3_EP_WEDGE) ||
+	    (dep->flags & DWC3_EP_STALL)) {
 		dep->flags |= DWC3_EP_DELAY_START;
 		return 0;
 	}
@@ -1718,6 +1723,18 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol)
 			return 0;
 		}
 
+		dwc3_stop_active_transfer(dep, true, true);
+
+		list_for_each_entry_safe(req, tmp, &dep->started_list, list)
+			dwc3_gadget_move_cancelled_request(req);
+
+		if (dep->flags & DWC3_EP_END_TRANSFER_PENDING) {
+			dep->flags |= DWC3_EP_PENDING_CLEAR_STALL;
+			return 0;
+		}
+
+		dwc3_gadget_ep_cleanup_cancelled_requests(dep);
+
 		ret = dwc3_send_clear_stall_ep_cmd(dep);
 		if (ret) {
 			dev_err(dwc->dev, "failed to clear STALL on %s\n",
@@ -1727,18 +1744,11 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol)
 
 		dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);
 
-		dwc3_stop_active_transfer(dep, true, true);
+		if ((dep->flags & DWC3_EP_DELAY_START) &&
+		    !usb_endpoint_xfer_isoc(dep->endpoint.desc))
+			__dwc3_gadget_kick_transfer(dep);
 
-		list_for_each_entry_safe(req, tmp, &dep->started_list, list)
-			dwc3_gadget_move_cancelled_request(req);
-
-		list_for_each_entry_safe(req, tmp, &dep->pending_list, list)
-			dwc3_gadget_move_cancelled_request(req);
-
-		if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING)) {
-			dep->flags &= ~DWC3_EP_DELAY_START;
-			dwc3_gadget_ep_cleanup_cancelled_requests(dep);
-		}
+		dep->flags &= ~DWC3_EP_DELAY_START;
 	}
 
 	return ret;
@@ -2772,6 +2782,26 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 			dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING;
 			dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
 			dwc3_gadget_ep_cleanup_cancelled_requests(dep);
+
+			if (dep->flags & DWC3_EP_PENDING_CLEAR_STALL) {
+				struct dwc3 *dwc = dep->dwc;
+
+				dep->flags &= ~DWC3_EP_PENDING_CLEAR_STALL;
+				if (dwc3_send_clear_stall_ep_cmd(dep)) {
+					struct usb_ep *ep0 = &dwc->eps[0]->endpoint;
+
+					dev_err(dwc->dev, "failed to clear STALL on %s\n",
+						dep->name);
+					if (dwc->delayed_status)
+						__dwc3_gadget_ep0_set_halt(ep0, 1);
+					return;
+				}
+
+				dep->flags &= ~(DWC3_EP_STALL | DWC3_EP_WEDGE);
+				if (dwc->delayed_status)
+					dwc3_ep0_send_delayed_status(dwc);
+			}
+
 			if ((dep->flags & DWC3_EP_DELAY_START) &&
 			    !usb_endpoint_xfer_isoc(dep->endpoint.desc))
 				__dwc3_gadget_kick_transfer(dep);
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index fbc7d8013f0b..47edd4dcdf7a 100644
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -111,6 +111,7 @@ int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
 		gfp_t gfp_flags);
 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
+void dwc3_ep0_send_delayed_status(struct dwc3 *dwc);
 
 /**
  * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index ae8f60f6e6a5..44a7e58a26e3 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -94,10 +94,13 @@ static struct platform_device *fsl_usb2_device_register(
 
 	pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
 
-	if (!pdev->dev.dma_mask)
+	if (!pdev->dev.dma_mask) {
 		pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
-	else
-		dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	} else {
+		retval = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+		if (retval)
+			goto error;
+	}
 
 	retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
 	if (retval)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index bbd616324faa..3c90c14390d6 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -21,6 +21,8 @@
 #define SSIC_PORT_CFG2_OFFSET	0x30
 #define PROG_DONE		(1 << 30)
 #define SSIC_PORT_UNUSED	(1 << 31)
+#define SPARSE_DISABLE_BIT	17
+#define SPARSE_CNTL_ENABLE	0xC12C
 
 /* Device for a quirk */
 #define PCI_VENDOR_ID_FRESCO_LOGIC	0x1b73
@@ -149,6 +151,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	    (pdev->device == 0x15e0 || pdev->device == 0x15e1))
 		xhci->quirks |= XHCI_SNPS_BROKEN_SUSPEND;
 
+	if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5)
+		xhci->quirks |= XHCI_DISABLE_SPARSE;
+
 	if (pdev->vendor == PCI_VENDOR_ID_AMD)
 		xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 
@@ -467,6 +472,15 @@ static void xhci_pme_quirk(struct usb_hcd *hcd)
 	readl(reg);
 }
 
+static void xhci_sparse_control_quirk(struct usb_hcd *hcd)
+{
+	u32 reg;
+
+	reg = readl(hcd->regs + SPARSE_CNTL_ENABLE);
+	reg &= ~BIT(SPARSE_DISABLE_BIT);
+	writel(reg, hcd->regs + SPARSE_CNTL_ENABLE);
+}
+
 static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 {
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -486,6 +500,9 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 	if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
 		xhci_ssic_port_unused_quirk(hcd, true);
 
+	if (xhci->quirks & XHCI_DISABLE_SPARSE)
+		xhci_sparse_control_quirk(hcd);
+
 	ret = xhci_suspend(xhci, do_wakeup);
 	if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
 		xhci_ssic_port_unused_quirk(hcd, false);
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 561b14dfbb49..b637d0cdcfab 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -982,12 +982,15 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
 			xhci->shared_hcd->state != HC_STATE_SUSPENDED)
 		return -EINVAL;
 
-	xhci_dbc_suspend(xhci);
-
 	/* Clear root port wake on bits if wakeup not allowed. */
 	if (!do_wakeup)
 		xhci_disable_port_wake_on_bits(xhci);
 
+	if (!HCD_HW_ACCESSIBLE(hcd))
+		return 0;
+
+	xhci_dbc_suspend(xhci);
+
 	/* Don't poll the roothubs on bus suspend. */
 	xhci_dbg(xhci, "%s: stopping port polling.\n", __func__);
 	clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 9f97feb3f824..18d97115305e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1874,6 +1874,7 @@ struct xhci_hcd {
 #define XHCI_RESET_PLL_ON_DISCONNECT	BIT_ULL(34)
 #define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)
 #define XHCI_CDNS_HOST		BIT_ULL(36)
+#define XHCI_DISABLE_SPARSE	BIT_ULL(38)
 
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c
index d8d157c4c271..96495fcd952a 100644
--- a/drivers/usb/misc/adutux.c
+++ b/drivers/usb/misc/adutux.c
@@ -209,6 +209,7 @@ static void adu_interrupt_out_callback(struct urb *urb)
 
 	if (status != 0) {
 		if ((status != -ENOENT) &&
+		    (status != -ESHUTDOWN) &&
 		    (status != -ECONNRESET)) {
 			dev_dbg(&dev->udev->dev,
 				"%s :nonzero status received: %d\n", __func__,
diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index f93732e53fd8..08db02f3172d 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -587,6 +587,7 @@ static int mtu3_gadget_stop(struct usb_gadget *g)
 
 	spin_unlock_irqrestore(&mtu->lock, flags);
 
+	synchronize_irq(mtu->irq);
 	return 0;
 }
 
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c
index ebd76ab07b72..36dd688b5795 100644
--- a/drivers/usb/serial/cyberjack.c
+++ b/drivers/usb/serial/cyberjack.c
@@ -357,11 +357,12 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
 	struct device *dev = &port->dev;
 	int status = urb->status;
 	unsigned long flags;
+	bool resubmitted = false;
 
-	set_bit(0, &port->write_urbs_free);
 	if (status) {
 		dev_dbg(dev, "%s - nonzero write bulk status received: %d\n",
 			__func__, status);
+		set_bit(0, &port->write_urbs_free);
 		return;
 	}
 
@@ -394,6 +395,8 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
 			goto exit;
 		}
 
+		resubmitted = true;
+
 		dev_dbg(dev, "%s - priv->wrsent=%d\n", __func__, priv->wrsent);
 		dev_dbg(dev, "%s - priv->wrfilled=%d\n", __func__, priv->wrfilled);
 
@@ -410,6 +413,8 @@ static void cyberjack_write_bulk_callback(struct urb *urb)
 
 exit:
 	spin_unlock_irqrestore(&priv->lock, flags);
+	if (!resubmitted)
+		set_bit(0, &port->write_urbs_free);
 	usb_serial_port_softint(port);
 }
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index eb5538a44ee9..741c72bd499a 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -250,6 +250,7 @@ static void option_instat_callback(struct urb *urb);
 #define QUECTEL_PRODUCT_EP06			0x0306
 #define QUECTEL_PRODUCT_EM12			0x0512
 #define QUECTEL_PRODUCT_RM500Q			0x0800
+#define QUECTEL_PRODUCT_EC200T			0x6026
 
 #define CMOTECH_VENDOR_ID			0x16d8
 #define CMOTECH_PRODUCT_6001			0x6001
@@ -1117,6 +1118,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x10),
 	  .driver_info = ZLP },
+	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC200T, 0xff, 0, 0) },
 
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) },
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) },
@@ -1189,6 +1191,8 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = NCTRL(0) | RSVD(1) },
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1054, 0xff),	/* Telit FT980-KS */
 	  .driver_info = NCTRL(2) | RSVD(3) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1055, 0xff),	/* Telit FN980 (PCIe) */
+	  .driver_info = NCTRL(0) | RSVD(1) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
@@ -1201,6 +1205,8 @@ static const struct usb_device_id option_ids[] = {
 	  .driver_info = NCTRL(0) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1203, 0xff),	/* Telit LE910Cx (RNDIS) */
+	  .driver_info = NCTRL(2) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920),
@@ -1215,6 +1221,10 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1213, 0xff) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE920A4_1214),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) | RSVD(3) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1230, 0xff),	/* Telit LE910Cx (rmnet) */
+	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1231, 0xff),	/* Telit LE910Cx (RNDIS) */
+	  .driver_info = NCTRL(2) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, 0x1260),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, 0x1261),
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 2148b81ad29f..c7584ba974ac 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -2777,12 +2777,12 @@ static void tcpm_reset_port(struct tcpm_port *port)
 
 static void tcpm_detach(struct tcpm_port *port)
 {
-	if (!port->attached)
-		return;
-
 	if (tcpm_port_is_disconnected(port))
 		port->hard_reset_count = 0;
 
+	if (!port->attached)
+		return;
+
 	tcpm_reset_port(port);
 }
 
@@ -3544,7 +3544,7 @@ static void run_state_machine(struct tcpm_port *port)
 		 */
 		tcpm_set_pwr_role(port, TYPEC_SOURCE);
 		tcpm_pd_send_control(port, PD_CTRL_PS_RDY);
-		tcpm_set_state(port, SRC_STARTUP, 0);
+		tcpm_set_state(port, SRC_STARTUP, PD_T_SWAP_SRC_START);
 		break;
 
 	case VCONN_SWAP_ACCEPT:
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index a0a2d74967ef..026a37ee4177 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -274,13 +274,14 @@ __vringh_iov(struct vringh *vrh, u16 i,
 	desc_max = vrh->vring.num;
 	up_next = -1;
 
+	/* You must want something! */
+	if (WARN_ON(!riov && !wiov))
+		return -EINVAL;
+
 	if (riov)
 		riov->i = riov->used = 0;
-	else if (wiov)
+	if (wiov)
 		wiov->i = wiov->used = 0;
-	else
-		/* You must want something! */
-		BUG();
 
 	for (;;) {
 		void *addr;
diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index 0a3b2b7c7891..c916e9161443 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -1016,6 +1016,8 @@ static int __init pvr2fb_setup(char *options)
 	if (!options || !*options)
 		return 0;
 
+	cable_arg[0] = output_arg[0] = 0;
+
 	while ((this_opt = strsep(&options, ","))) {
 		if (!*this_opt)
 			continue;
diff --git a/drivers/w1/masters/mxc_w1.c b/drivers/w1/masters/mxc_w1.c
index 1ca880e01476..090cbbf9e1e2 100644
--- a/drivers/w1/masters/mxc_w1.c
+++ b/drivers/w1/masters/mxc_w1.c
@@ -7,7 +7,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/io.h>
-#include <linux/jiffies.h>
+#include <linux/ktime.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
@@ -40,12 +40,12 @@ struct mxc_w1_device {
 static u8 mxc_w1_ds2_reset_bus(void *data)
 {
 	struct mxc_w1_device *dev = data;
-	unsigned long timeout;
+	ktime_t timeout;
 
 	writeb(MXC_W1_CONTROL_RPP, dev->regs + MXC_W1_CONTROL);
 
 	/* Wait for reset sequence 511+512us, use 1500us for sure */
-	timeout = jiffies + usecs_to_jiffies(1500);
+	timeout = ktime_add_us(ktime_get(), 1500);
 
 	udelay(511 + 512);
 
@@ -55,7 +55,7 @@ static u8 mxc_w1_ds2_reset_bus(void *data)
 		/* PST bit is valid after the RPP bit is self-cleared */
 		if (!(ctrl & MXC_W1_CONTROL_RPP))
 			return !(ctrl & MXC_W1_CONTROL_PST);
-	} while (time_is_after_jiffies(timeout));
+	} while (ktime_before(ktime_get(), timeout));
 
 	return 1;
 }
@@ -68,12 +68,12 @@ static u8 mxc_w1_ds2_reset_bus(void *data)
 static u8 mxc_w1_ds2_touch_bit(void *data, u8 bit)
 {
 	struct mxc_w1_device *dev = data;
-	unsigned long timeout;
+	ktime_t timeout;
 
 	writeb(MXC_W1_CONTROL_WR(bit), dev->regs + MXC_W1_CONTROL);
 
 	/* Wait for read/write bit (60us, Max 120us), use 200us for sure */
-	timeout = jiffies + usecs_to_jiffies(200);
+	timeout = ktime_add_us(ktime_get(), 200);
 
 	udelay(60);
 
@@ -83,7 +83,7 @@ static u8 mxc_w1_ds2_touch_bit(void *data, u8 bit)
 		/* RDST bit is valid after the WR1/RD bit is self-cleared */
 		if (!(ctrl & MXC_W1_CONTROL_WR(bit)))
 			return !!(ctrl & MXC_W1_CONTROL_RDST);
-	} while (time_is_after_jiffies(timeout));
+	} while (ktime_before(ktime_get(), timeout));
 
 	return 0;
 }
diff --git a/drivers/watchdog/rdc321x_wdt.c b/drivers/watchdog/rdc321x_wdt.c
index 2e608ae6cbc7..e0efbc583198 100644
--- a/drivers/watchdog/rdc321x_wdt.c
+++ b/drivers/watchdog/rdc321x_wdt.c
@@ -230,6 +230,8 @@ static int rdc321x_wdt_probe(struct platform_device *pdev)
 
 	rdc321x_wdt_device.sb_pdev = pdata->sb_pdev;
 	rdc321x_wdt_device.base_reg = r->start;
+	rdc321x_wdt_device.queue = 0;
+	rdc321x_wdt_device.default_ticks = ticks;
 
 	err = misc_register(&rdc321x_wdt_misc);
 	if (err < 0) {
@@ -244,14 +246,11 @@ static int rdc321x_wdt_probe(struct platform_device *pdev)
 				rdc321x_wdt_device.base_reg, RDC_WDT_RST);
 
 	init_completion(&rdc321x_wdt_device.stop);
-	rdc321x_wdt_device.queue = 0;
 
 	clear_bit(0, &rdc321x_wdt_device.inuse);
 
 	timer_setup(&rdc321x_wdt_device.timer, rdc321x_wdt_trigger, 0);
 
-	rdc321x_wdt_device.default_ticks = ticks;
-
 	dev_info(&pdev->dev, "watchdog init success\n");
 
 	return 0;
diff --git a/drivers/xen/events/events_2l.c b/drivers/xen/events/events_2l.c
index 8edef51c92e5..f026624898e7 100644
--- a/drivers/xen/events/events_2l.c
+++ b/drivers/xen/events/events_2l.c
@@ -91,6 +91,8 @@ static void evtchn_2l_unmask(unsigned port)
 
 	BUG_ON(!irqs_disabled());
 
+	smp_wmb();	/* All writes before unmask must be visible. */
+
 	if (unlikely((cpu != cpu_from_evtchn(port))))
 		do_hypercall = 1;
 	else {
@@ -159,7 +161,7 @@ static inline xen_ulong_t active_evtchns(unsigned int cpu,
  * a bitset of words which contain pending event bits.  The second
  * level is a bitset of pending events themselves.
  */
-static void evtchn_2l_handle_events(unsigned cpu)
+static void evtchn_2l_handle_events(unsigned cpu, struct evtchn_loop_ctrl *ctrl)
 {
 	int irq;
 	xen_ulong_t pending_words;
@@ -240,10 +242,7 @@ static void evtchn_2l_handle_events(unsigned cpu)
 
 			/* Process port. */
 			port = (word_idx * BITS_PER_EVTCHN_WORD) + bit_idx;
-			irq = get_evtchn_to_irq(port);
-
-			if (irq != -1)
-				generic_handle_irq(irq);
+			handle_irq_for_port(port, ctrl);
 
 			bit_idx = (bit_idx + 1) % BITS_PER_EVTCHN_WORD;
 
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index e402620b8920..26df84c45db4 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -33,6 +33,10 @@
 #include <linux/slab.h>
 #include <linux/irqnr.h>
 #include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/cpuhotplug.h>
+#include <linux/atomic.h>
+#include <linux/ktime.h>
 
 #ifdef CONFIG_X86
 #include <asm/desc.h>
@@ -62,6 +66,15 @@
 
 #include "events_internal.h"
 
+#undef MODULE_PARAM_PREFIX
+#define MODULE_PARAM_PREFIX "xen."
+
+static uint __read_mostly event_loop_timeout = 2;
+module_param(event_loop_timeout, uint, 0644);
+
+static uint __read_mostly event_eoi_delay = 10;
+module_param(event_eoi_delay, uint, 0644);
+
 const struct evtchn_ops *evtchn_ops;
 
 /*
@@ -70,6 +83,24 @@ const struct evtchn_ops *evtchn_ops;
  */
 static DEFINE_MUTEX(irq_mapping_update_lock);
 
+/*
+ * Lock protecting event handling loop against removing event channels.
+ * Adding of event channels is no issue as the associated IRQ becomes active
+ * only after everything is setup (before request_[threaded_]irq() the handler
+ * can't be entered for an event, as the event channel will be unmasked only
+ * then).
+ */
+static DEFINE_RWLOCK(evtchn_rwlock);
+
+/*
+ * Lock hierarchy:
+ *
+ * irq_mapping_update_lock
+ *   evtchn_rwlock
+ *     IRQ-desc lock
+ *       percpu eoi_list_lock
+ */
+
 static LIST_HEAD(xen_irq_list_head);
 
 /* IRQ <-> VIRQ mapping. */
@@ -94,17 +125,20 @@ static bool (*pirq_needs_eoi)(unsigned irq);
 static struct irq_info *legacy_info_ptrs[NR_IRQS_LEGACY];
 
 static struct irq_chip xen_dynamic_chip;
+static struct irq_chip xen_lateeoi_chip;
 static struct irq_chip xen_percpu_chip;
 static struct irq_chip xen_pirq_chip;
 static void enable_dynirq(struct irq_data *data);
 static void disable_dynirq(struct irq_data *data);
 
+static DEFINE_PER_CPU(unsigned int, irq_epoch);
+
 static void clear_evtchn_to_irq_row(unsigned row)
 {
 	unsigned col;
 
 	for (col = 0; col < EVTCHN_PER_ROW; col++)
-		evtchn_to_irq[row][col] = -1;
+		WRITE_ONCE(evtchn_to_irq[row][col], -1);
 }
 
 static void clear_evtchn_to_irq_all(void)
@@ -141,7 +175,7 @@ static int set_evtchn_to_irq(unsigned evtchn, unsigned irq)
 		clear_evtchn_to_irq_row(row);
 	}
 
-	evtchn_to_irq[row][col] = irq;
+	WRITE_ONCE(evtchn_to_irq[row][col], irq);
 	return 0;
 }
 
@@ -151,7 +185,7 @@ int get_evtchn_to_irq(unsigned evtchn)
 		return -1;
 	if (evtchn_to_irq[EVTCHN_ROW(evtchn)] == NULL)
 		return -1;
-	return evtchn_to_irq[EVTCHN_ROW(evtchn)][EVTCHN_COL(evtchn)];
+	return READ_ONCE(evtchn_to_irq[EVTCHN_ROW(evtchn)][EVTCHN_COL(evtchn)]);
 }
 
 /* Get info for IRQ */
@@ -260,10 +294,14 @@ static void xen_irq_info_cleanup(struct irq_info *info)
  */
 unsigned int evtchn_from_irq(unsigned irq)
 {
-	if (WARN(irq >= nr_irqs, "Invalid irq %d!\n", irq))
+	const struct irq_info *info = NULL;
+
+	if (likely(irq < nr_irqs))
+		info = info_for_irq(irq);
+	if (!info)
 		return 0;
 
-	return info_for_irq(irq)->evtchn;
+	return info->evtchn;
 }
 
 unsigned irq_from_evtchn(unsigned int evtchn)
@@ -374,9 +412,157 @@ void notify_remote_via_irq(int irq)
 }
 EXPORT_SYMBOL_GPL(notify_remote_via_irq);
 
+struct lateeoi_work {
+	struct delayed_work delayed;
+	spinlock_t eoi_list_lock;
+	struct list_head eoi_list;
+};
+
+static DEFINE_PER_CPU(struct lateeoi_work, lateeoi);
+
+static void lateeoi_list_del(struct irq_info *info)
+{
+	struct lateeoi_work *eoi = &per_cpu(lateeoi, info->eoi_cpu);
+	unsigned long flags;
+
+	spin_lock_irqsave(&eoi->eoi_list_lock, flags);
+	list_del_init(&info->eoi_list);
+	spin_unlock_irqrestore(&eoi->eoi_list_lock, flags);
+}
+
+static void lateeoi_list_add(struct irq_info *info)
+{
+	struct lateeoi_work *eoi = &per_cpu(lateeoi, info->eoi_cpu);
+	struct irq_info *elem;
+	u64 now = get_jiffies_64();
+	unsigned long delay;
+	unsigned long flags;
+
+	if (now < info->eoi_time)
+		delay = info->eoi_time - now;
+	else
+		delay = 1;
+
+	spin_lock_irqsave(&eoi->eoi_list_lock, flags);
+
+	if (list_empty(&eoi->eoi_list)) {
+		list_add(&info->eoi_list, &eoi->eoi_list);
+		mod_delayed_work_on(info->eoi_cpu, system_wq,
+				    &eoi->delayed, delay);
+	} else {
+		list_for_each_entry_reverse(elem, &eoi->eoi_list, eoi_list) {
+			if (elem->eoi_time <= info->eoi_time)
+				break;
+		}
+		list_add(&info->eoi_list, &elem->eoi_list);
+	}
+
+	spin_unlock_irqrestore(&eoi->eoi_list_lock, flags);
+}
+
+static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
+{
+	evtchn_port_t evtchn;
+	unsigned int cpu;
+	unsigned int delay = 0;
+
+	evtchn = info->evtchn;
+	if (!VALID_EVTCHN(evtchn) || !list_empty(&info->eoi_list))
+		return;
+
+	if (spurious) {
+		if ((1 << info->spurious_cnt) < (HZ << 2))
+			info->spurious_cnt++;
+		if (info->spurious_cnt > 1) {
+			delay = 1 << (info->spurious_cnt - 2);
+			if (delay > HZ)
+				delay = HZ;
+			if (!info->eoi_time)
+				info->eoi_cpu = smp_processor_id();
+			info->eoi_time = get_jiffies_64() + delay;
+		}
+	} else {
+		info->spurious_cnt = 0;
+	}
+
+	cpu = info->eoi_cpu;
+	if (info->eoi_time &&
+	    (info->irq_epoch == per_cpu(irq_epoch, cpu) || delay)) {
+		lateeoi_list_add(info);
+		return;
+	}
+
+	info->eoi_time = 0;
+	unmask_evtchn(evtchn);
+}
+
+static void xen_irq_lateeoi_worker(struct work_struct *work)
+{
+	struct lateeoi_work *eoi;
+	struct irq_info *info;
+	u64 now = get_jiffies_64();
+	unsigned long flags;
+
+	eoi = container_of(to_delayed_work(work), struct lateeoi_work, delayed);
+
+	read_lock_irqsave(&evtchn_rwlock, flags);
+
+	while (true) {
+		spin_lock(&eoi->eoi_list_lock);
+
+		info = list_first_entry_or_null(&eoi->eoi_list, struct irq_info,
+						eoi_list);
+
+		if (info == NULL || now < info->eoi_time) {
+			spin_unlock(&eoi->eoi_list_lock);
+			break;
+		}
+
+		list_del_init(&info->eoi_list);
+
+		spin_unlock(&eoi->eoi_list_lock);
+
+		info->eoi_time = 0;
+
+		xen_irq_lateeoi_locked(info, false);
+	}
+
+	if (info)
+		mod_delayed_work_on(info->eoi_cpu, system_wq,
+				    &eoi->delayed, info->eoi_time - now);
+
+	read_unlock_irqrestore(&evtchn_rwlock, flags);
+}
+
+static void xen_cpu_init_eoi(unsigned int cpu)
+{
+	struct lateeoi_work *eoi = &per_cpu(lateeoi, cpu);
+
+	INIT_DELAYED_WORK(&eoi->delayed, xen_irq_lateeoi_worker);
+	spin_lock_init(&eoi->eoi_list_lock);
+	INIT_LIST_HEAD(&eoi->eoi_list);
+}
+
+void xen_irq_lateeoi(unsigned int irq, unsigned int eoi_flags)
+{
+	struct irq_info *info;
+	unsigned long flags;
+
+	read_lock_irqsave(&evtchn_rwlock, flags);
+
+	info = info_for_irq(irq);
+
+	if (info)
+		xen_irq_lateeoi_locked(info, eoi_flags & XEN_EOI_FLAG_SPURIOUS);
+
+	read_unlock_irqrestore(&evtchn_rwlock, flags);
+}
+EXPORT_SYMBOL_GPL(xen_irq_lateeoi);
+
 static void xen_irq_init(unsigned irq)
 {
 	struct irq_info *info;
+
 #ifdef CONFIG_SMP
 	/* By default all event channels notify CPU#0. */
 	cpumask_copy(irq_get_affinity_mask(irq), cpumask_of(0));
@@ -391,6 +577,7 @@ static void xen_irq_init(unsigned irq)
 
 	set_info_for_irq(irq, info);
 
+	INIT_LIST_HEAD(&info->eoi_list);
 	list_add_tail(&info->list, &xen_irq_list_head);
 }
 
@@ -439,16 +626,24 @@ static int __must_check xen_allocate_irq_gsi(unsigned gsi)
 static void xen_free_irq(unsigned irq)
 {
 	struct irq_info *info = info_for_irq(irq);
+	unsigned long flags;
 
 	if (WARN_ON(!info))
 		return;
 
+	write_lock_irqsave(&evtchn_rwlock, flags);
+
+	if (!list_empty(&info->eoi_list))
+		lateeoi_list_del(info);
+
 	list_del(&info->list);
 
 	set_info_for_irq(irq, NULL);
 
 	WARN_ON(info->refcnt > 0);
 
+	write_unlock_irqrestore(&evtchn_rwlock, flags);
+
 	kfree(info);
 
 	/* Legacy IRQ descriptors are managed by the arch. */
@@ -840,7 +1035,7 @@ int xen_pirq_from_irq(unsigned irq)
 }
 EXPORT_SYMBOL_GPL(xen_pirq_from_irq);
 
-int bind_evtchn_to_irq(unsigned int evtchn)
+static int bind_evtchn_to_irq_chip(evtchn_port_t evtchn, struct irq_chip *chip)
 {
 	int irq;
 	int ret;
@@ -857,7 +1052,7 @@ int bind_evtchn_to_irq(unsigned int evtchn)
 		if (irq < 0)
 			goto out;
 
-		irq_set_chip_and_handler_name(irq, &xen_dynamic_chip,
+		irq_set_chip_and_handler_name(irq, chip,
 					      handle_edge_irq, "event");
 
 		ret = xen_irq_info_evtchn_setup(irq, evtchn);
@@ -878,8 +1073,19 @@ out:
 
 	return irq;
 }
+
+int bind_evtchn_to_irq(evtchn_port_t evtchn)
+{
+	return bind_evtchn_to_irq_chip(evtchn, &xen_dynamic_chip);
+}
 EXPORT_SYMBOL_GPL(bind_evtchn_to_irq);
 
+int bind_evtchn_to_irq_lateeoi(evtchn_port_t evtchn)
+{
+	return bind_evtchn_to_irq_chip(evtchn, &xen_lateeoi_chip);
+}
+EXPORT_SYMBOL_GPL(bind_evtchn_to_irq_lateeoi);
+
 static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
 {
 	struct evtchn_bind_ipi bind_ipi;
@@ -921,8 +1127,9 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
 	return irq;
 }
 
-int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
-				   unsigned int remote_port)
+static int bind_interdomain_evtchn_to_irq_chip(unsigned int remote_domain,
+					       evtchn_port_t remote_port,
+					       struct irq_chip *chip)
 {
 	struct evtchn_bind_interdomain bind_interdomain;
 	int err;
@@ -933,10 +1140,26 @@ int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
 	err = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain,
 					  &bind_interdomain);
 
-	return err ? : bind_evtchn_to_irq(bind_interdomain.local_port);
+	return err ? : bind_evtchn_to_irq_chip(bind_interdomain.local_port,
+					       chip);
+}
+
+int bind_interdomain_evtchn_to_irq(unsigned int remote_domain,
+				   evtchn_port_t remote_port)
+{
+	return bind_interdomain_evtchn_to_irq_chip(remote_domain, remote_port,
+						   &xen_dynamic_chip);
 }
 EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irq);
 
+int bind_interdomain_evtchn_to_irq_lateeoi(unsigned int remote_domain,
+					   evtchn_port_t remote_port)
+{
+	return bind_interdomain_evtchn_to_irq_chip(remote_domain, remote_port,
+						   &xen_lateeoi_chip);
+}
+EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irq_lateeoi);
+
 static int find_virq(unsigned int virq, unsigned int cpu)
 {
 	struct evtchn_status status;
@@ -1032,14 +1255,15 @@ static void unbind_from_irq(unsigned int irq)
 	mutex_unlock(&irq_mapping_update_lock);
 }
 
-int bind_evtchn_to_irqhandler(unsigned int evtchn,
-			      irq_handler_t handler,
-			      unsigned long irqflags,
-			      const char *devname, void *dev_id)
+static int bind_evtchn_to_irqhandler_chip(evtchn_port_t evtchn,
+					  irq_handler_t handler,
+					  unsigned long irqflags,
+					  const char *devname, void *dev_id,
+					  struct irq_chip *chip)
 {
 	int irq, retval;
 
-	irq = bind_evtchn_to_irq(evtchn);
+	irq = bind_evtchn_to_irq_chip(evtchn, chip);
 	if (irq < 0)
 		return irq;
 	retval = request_irq(irq, handler, irqflags, devname, dev_id);
@@ -1050,18 +1274,38 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
 
 	return irq;
 }
+
+int bind_evtchn_to_irqhandler(evtchn_port_t evtchn,
+			      irq_handler_t handler,
+			      unsigned long irqflags,
+			      const char *devname, void *dev_id)
+{
+	return bind_evtchn_to_irqhandler_chip(evtchn, handler, irqflags,
+					      devname, dev_id,
+					      &xen_dynamic_chip);
+}
 EXPORT_SYMBOL_GPL(bind_evtchn_to_irqhandler);
 
-int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
-					  unsigned int remote_port,
-					  irq_handler_t handler,
-					  unsigned long irqflags,
-					  const char *devname,
-					  void *dev_id)
+int bind_evtchn_to_irqhandler_lateeoi(evtchn_port_t evtchn,
+				      irq_handler_t handler,
+				      unsigned long irqflags,
+				      const char *devname, void *dev_id)
+{
+	return bind_evtchn_to_irqhandler_chip(evtchn, handler, irqflags,
+					      devname, dev_id,
+					      &xen_lateeoi_chip);
+}
+EXPORT_SYMBOL_GPL(bind_evtchn_to_irqhandler_lateeoi);
+
+static int bind_interdomain_evtchn_to_irqhandler_chip(
+		unsigned int remote_domain, evtchn_port_t remote_port,
+		irq_handler_t handler, unsigned long irqflags,
+		const char *devname, void *dev_id, struct irq_chip *chip)
 {
 	int irq, retval;
 
-	irq = bind_interdomain_evtchn_to_irq(remote_domain, remote_port);
+	irq = bind_interdomain_evtchn_to_irq_chip(remote_domain, remote_port,
+						  chip);
 	if (irq < 0)
 		return irq;
 
@@ -1073,8 +1317,33 @@ int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
 
 	return irq;
 }
+
+int bind_interdomain_evtchn_to_irqhandler(unsigned int remote_domain,
+					  evtchn_port_t remote_port,
+					  irq_handler_t handler,
+					  unsigned long irqflags,
+					  const char *devname,
+					  void *dev_id)
+{
+	return bind_interdomain_evtchn_to_irqhandler_chip(remote_domain,
+				remote_port, handler, irqflags, devname,
+				dev_id, &xen_dynamic_chip);
+}
 EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irqhandler);
 
+int bind_interdomain_evtchn_to_irqhandler_lateeoi(unsigned int remote_domain,
+						  evtchn_port_t remote_port,
+						  irq_handler_t handler,
+						  unsigned long irqflags,
+						  const char *devname,
+						  void *dev_id)
+{
+	return bind_interdomain_evtchn_to_irqhandler_chip(remote_domain,
+				remote_port, handler, irqflags, devname,
+				dev_id, &xen_lateeoi_chip);
+}
+EXPORT_SYMBOL_GPL(bind_interdomain_evtchn_to_irqhandler_lateeoi);
+
 int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
 			    irq_handler_t handler,
 			    unsigned long irqflags, const char *devname, void *dev_id)
@@ -1187,7 +1456,7 @@ int evtchn_get(unsigned int evtchn)
 		goto done;
 
 	err = -EINVAL;
-	if (info->refcnt <= 0)
+	if (info->refcnt <= 0 || info->refcnt == SHRT_MAX)
 		goto done;
 
 	info->refcnt++;
@@ -1226,6 +1495,54 @@ void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector)
 	notify_remote_via_irq(irq);
 }
 
+struct evtchn_loop_ctrl {
+	ktime_t timeout;
+	unsigned count;
+	bool defer_eoi;
+};
+
+void handle_irq_for_port(evtchn_port_t port, struct evtchn_loop_ctrl *ctrl)
+{
+	int irq;
+	struct irq_info *info;
+
+	irq = get_evtchn_to_irq(port);
+	if (irq == -1)
+		return;
+
+	/*
+	 * Check for timeout every 256 events.
+	 * We are setting the timeout value only after the first 256
+	 * events in order to not hurt the common case of few loop
+	 * iterations. The 256 is basically an arbitrary value.
+	 *
+	 * In case we are hitting the timeout we need to defer all further
+	 * EOIs in order to ensure to leave the event handling loop rather
+	 * sooner than later.
+	 */
+	if (!ctrl->defer_eoi && !(++ctrl->count & 0xff)) {
+		ktime_t kt = ktime_get();
+
+		if (!ctrl->timeout) {
+			kt = ktime_add_ms(kt,
+					  jiffies_to_msecs(event_loop_timeout));
+			ctrl->timeout = kt;
+		} else if (kt > ctrl->timeout) {
+			ctrl->defer_eoi = true;
+		}
+	}
+
+	info = info_for_irq(irq);
+
+	if (ctrl->defer_eoi) {
+		info->eoi_cpu = smp_processor_id();
+		info->irq_epoch = __this_cpu_read(irq_epoch);
+		info->eoi_time = get_jiffies_64() + event_eoi_delay;
+	}
+
+	generic_handle_irq(irq);
+}
+
 static DEFINE_PER_CPU(unsigned, xed_nesting_count);
 
 static void __xen_evtchn_do_upcall(void)
@@ -1233,6 +1550,9 @@ static void __xen_evtchn_do_upcall(void)
 	struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu);
 	int cpu = get_cpu();
 	unsigned count;
+	struct evtchn_loop_ctrl ctrl = { 0 };
+
+	read_lock(&evtchn_rwlock);
 
 	do {
 		vcpu_info->evtchn_upcall_pending = 0;
@@ -1240,7 +1560,7 @@ static void __xen_evtchn_do_upcall(void)
 		if (__this_cpu_inc_return(xed_nesting_count) - 1)
 			goto out;
 
-		xen_evtchn_handle_events(cpu);
+		xen_evtchn_handle_events(cpu, &ctrl);
 
 		BUG_ON(!irqs_disabled());
 
@@ -1249,6 +1569,14 @@ static void __xen_evtchn_do_upcall(void)
 	} while (count != 1 || vcpu_info->evtchn_upcall_pending);
 
 out:
+	read_unlock(&evtchn_rwlock);
+
+	/*
+	 * Increment irq_epoch only now to defer EOIs only for
+	 * xen_irq_lateeoi() invocations occurring from inside the loop
+	 * above.
+	 */
+	__this_cpu_inc(irq_epoch);
 
 	put_cpu();
 }
@@ -1615,6 +1943,21 @@ static struct irq_chip xen_dynamic_chip __read_mostly = {
 	.irq_retrigger		= retrigger_dynirq,
 };
 
+static struct irq_chip xen_lateeoi_chip __read_mostly = {
+	/* The chip name needs to contain "xen-dyn" for irqbalance to work. */
+	.name			= "xen-dyn-lateeoi",
+
+	.irq_disable		= disable_dynirq,
+	.irq_mask		= disable_dynirq,
+	.irq_unmask		= enable_dynirq,
+
+	.irq_ack		= mask_ack_dynirq,
+	.irq_mask_ack		= mask_ack_dynirq,
+
+	.irq_set_affinity	= set_affinity_irq,
+	.irq_retrigger		= retrigger_dynirq,
+};
+
 static struct irq_chip xen_pirq_chip __read_mostly = {
 	.name			= "xen-pirq",
 
@@ -1681,12 +2024,31 @@ void xen_callback_vector(void)
 void xen_callback_vector(void) {}
 #endif
 
-#undef MODULE_PARAM_PREFIX
-#define MODULE_PARAM_PREFIX "xen."
-
 static bool fifo_events = true;
 module_param(fifo_events, bool, 0);
 
+static int xen_evtchn_cpu_prepare(unsigned int cpu)
+{
+	int ret = 0;
+
+	xen_cpu_init_eoi(cpu);
+
+	if (evtchn_ops->percpu_init)
+		ret = evtchn_ops->percpu_init(cpu);
+
+	return ret;
+}
+
+static int xen_evtchn_cpu_dead(unsigned int cpu)
+{
+	int ret = 0;
+
+	if (evtchn_ops->percpu_deinit)
+		ret = evtchn_ops->percpu_deinit(cpu);
+
+	return ret;
+}
+
 void __init xen_init_IRQ(void)
 {
 	int ret = -EINVAL;
@@ -1697,6 +2059,12 @@ void __init xen_init_IRQ(void)
 	if (ret < 0)
 		xen_evtchn_2l_init();
 
+	xen_cpu_init_eoi(smp_processor_id());
+
+	cpuhp_setup_state_nocalls(CPUHP_XEN_EVTCHN_PREPARE,
+				  "xen/evtchn:prepare",
+				  xen_evtchn_cpu_prepare, xen_evtchn_cpu_dead);
+
 	evtchn_to_irq = kcalloc(EVTCHN_ROW(xen_evtchn_max_channels()),
 				sizeof(*evtchn_to_irq), GFP_KERNEL);
 	BUG_ON(!evtchn_to_irq);
diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c
index 76b318e88382..33462521bfd0 100644
--- a/drivers/xen/events/events_fifo.c
+++ b/drivers/xen/events/events_fifo.c
@@ -227,19 +227,25 @@ static bool evtchn_fifo_is_masked(unsigned port)
 	return sync_test_bit(EVTCHN_FIFO_BIT(MASKED, word), BM(word));
 }
 /*
- * Clear MASKED, spinning if BUSY is set.
+ * Clear MASKED if not PENDING, spinning if BUSY is set.
+ * Return true if mask was cleared.
  */
-static void clear_masked(volatile event_word_t *word)
+static bool clear_masked_cond(volatile event_word_t *word)
 {
 	event_word_t new, old, w;
 
 	w = *word;
 
 	do {
+		if (w & (1 << EVTCHN_FIFO_PENDING))
+			return false;
+
 		old = w & ~(1 << EVTCHN_FIFO_BUSY);
 		new = old & ~(1 << EVTCHN_FIFO_MASKED);
 		w = sync_cmpxchg(word, old, new);
 	} while (w != old);
+
+	return true;
 }
 
 static void evtchn_fifo_unmask(unsigned port)
@@ -248,8 +254,7 @@ static void evtchn_fifo_unmask(unsigned port)
 
 	BUG_ON(!irqs_disabled());
 
-	clear_masked(word);
-	if (evtchn_fifo_is_pending(port)) {
+	if (!clear_masked_cond(word)) {
 		struct evtchn_unmask unmask = { .port = port };
 		(void)HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &unmask);
 	}
@@ -270,19 +275,9 @@ static uint32_t clear_linked(volatile event_word_t *word)
 	return w & EVTCHN_FIFO_LINK_MASK;
 }
 
-static void handle_irq_for_port(unsigned port)
-{
-	int irq;
-
-	irq = get_evtchn_to_irq(port);
-	if (irq != -1)
-		generic_handle_irq(irq);
-}
-
-static void consume_one_event(unsigned cpu,
+static void consume_one_event(unsigned cpu, struct evtchn_loop_ctrl *ctrl,
 			      struct evtchn_fifo_control_block *control_block,
-			      unsigned priority, unsigned long *ready,
-			      bool drop)
+			      unsigned priority, unsigned long *ready)
 {
 	struct evtchn_fifo_queue *q = &per_cpu(cpu_queue, cpu);
 	uint32_t head;
@@ -315,16 +310,17 @@ static void consume_one_event(unsigned cpu,
 		clear_bit(priority, ready);
 
 	if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port)) {
-		if (unlikely(drop))
+		if (unlikely(!ctrl))
 			pr_warn("Dropping pending event for port %u\n", port);
 		else
-			handle_irq_for_port(port);
+			handle_irq_for_port(port, ctrl);
 	}
 
 	q->head[priority] = head;
 }
 
-static void __evtchn_fifo_handle_events(unsigned cpu, bool drop)
+static void __evtchn_fifo_handle_events(unsigned cpu,
+					struct evtchn_loop_ctrl *ctrl)
 {
 	struct evtchn_fifo_control_block *control_block;
 	unsigned long ready;
@@ -336,14 +332,15 @@ static void __evtchn_fifo_handle_events(unsigned cpu, bool drop)
 
 	while (ready) {
 		q = find_first_bit(&ready, EVTCHN_FIFO_MAX_QUEUES);
-		consume_one_event(cpu, control_block, q, &ready, drop);
+		consume_one_event(cpu, ctrl, control_block, q, &ready);
 		ready |= xchg(&control_block->ready, 0);
 	}
 }
 
-static void evtchn_fifo_handle_events(unsigned cpu)
+static void evtchn_fifo_handle_events(unsigned cpu,
+				      struct evtchn_loop_ctrl *ctrl)
 {
-	__evtchn_fifo_handle_events(cpu, false);
+	__evtchn_fifo_handle_events(cpu, ctrl);
 }
 
 static void evtchn_fifo_resume(void)
@@ -380,21 +377,6 @@ static void evtchn_fifo_resume(void)
 	event_array_pages = 0;
 }
 
-static const struct evtchn_ops evtchn_ops_fifo = {
-	.max_channels      = evtchn_fifo_max_channels,
-	.nr_channels       = evtchn_fifo_nr_channels,
-	.setup             = evtchn_fifo_setup,
-	.bind_to_cpu       = evtchn_fifo_bind_to_cpu,
-	.clear_pending     = evtchn_fifo_clear_pending,
-	.set_pending       = evtchn_fifo_set_pending,
-	.is_pending        = evtchn_fifo_is_pending,
-	.test_and_set_mask = evtchn_fifo_test_and_set_mask,
-	.mask              = evtchn_fifo_mask,
-	.unmask            = evtchn_fifo_unmask,
-	.handle_events     = evtchn_fifo_handle_events,
-	.resume            = evtchn_fifo_resume,
-};
-
 static int evtchn_fifo_alloc_control_block(unsigned cpu)
 {
 	void *control_block = NULL;
@@ -417,19 +399,36 @@ static int evtchn_fifo_alloc_control_block(unsigned cpu)
 	return ret;
 }
 
-static int xen_evtchn_cpu_prepare(unsigned int cpu)
+static int evtchn_fifo_percpu_init(unsigned int cpu)
 {
 	if (!per_cpu(cpu_control_block, cpu))
 		return evtchn_fifo_alloc_control_block(cpu);
 	return 0;
 }
 
-static int xen_evtchn_cpu_dead(unsigned int cpu)
+static int evtchn_fifo_percpu_deinit(unsigned int cpu)
 {
-	__evtchn_fifo_handle_events(cpu, true);
+	__evtchn_fifo_handle_events(cpu, NULL);
 	return 0;
 }
 
+static const struct evtchn_ops evtchn_ops_fifo = {
+	.max_channels      = evtchn_fifo_max_channels,
+	.nr_channels       = evtchn_fifo_nr_channels,
+	.setup             = evtchn_fifo_setup,
+	.bind_to_cpu       = evtchn_fifo_bind_to_cpu,
+	.clear_pending     = evtchn_fifo_clear_pending,
+	.set_pending       = evtchn_fifo_set_pending,
+	.is_pending        = evtchn_fifo_is_pending,
+	.test_and_set_mask = evtchn_fifo_test_and_set_mask,
+	.mask              = evtchn_fifo_mask,
+	.unmask            = evtchn_fifo_unmask,
+	.handle_events     = evtchn_fifo_handle_events,
+	.resume            = evtchn_fifo_resume,
+	.percpu_init       = evtchn_fifo_percpu_init,
+	.percpu_deinit     = evtchn_fifo_percpu_deinit,
+};
+
 int __init xen_evtchn_fifo_init(void)
 {
 	int cpu = smp_processor_id();
@@ -443,9 +442,5 @@ int __init xen_evtchn_fifo_init(void)
 
 	evtchn_ops = &evtchn_ops_fifo;
 
-	cpuhp_setup_state_nocalls(CPUHP_XEN_EVTCHN_PREPARE,
-				  "xen/evtchn:prepare",
-				  xen_evtchn_cpu_prepare, xen_evtchn_cpu_dead);
-
 	return ret;
 }
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h
index 82938cff6c7a..a35c8c7ac606 100644
--- a/drivers/xen/events/events_internal.h
+++ b/drivers/xen/events/events_internal.h
@@ -30,11 +30,16 @@ enum xen_irq_type {
  */
 struct irq_info {
 	struct list_head list;
-	int refcnt;
+	struct list_head eoi_list;
+	short refcnt;
+	short spurious_cnt;
 	enum xen_irq_type type;	/* type */
 	unsigned irq;
 	unsigned int evtchn;	/* event channel */
 	unsigned short cpu;	/* cpu bound */
+	unsigned short eoi_cpu;	/* EOI must happen on this cpu */
+	unsigned int irq_epoch;	/* If eoi_cpu valid: irq_epoch of event */
+	u64 eoi_time;		/* Time in jiffies when to EOI. */
 
 	union {
 		unsigned short virq;
@@ -53,6 +58,8 @@ struct irq_info {
 #define PIRQ_SHAREABLE	(1 << 1)
 #define PIRQ_MSI_GROUP	(1 << 2)
 
+struct evtchn_loop_ctrl;
+
 struct evtchn_ops {
 	unsigned (*max_channels)(void);
 	unsigned (*nr_channels)(void);
@@ -67,14 +74,18 @@ struct evtchn_ops {
 	void (*mask)(unsigned port);
 	void (*unmask)(unsigned port);
 
-	void (*handle_events)(unsigned cpu);
+	void (*handle_events)(unsigned cpu, struct evtchn_loop_ctrl *ctrl);
 	void (*resume)(void);
+
+	int (*percpu_init)(unsigned int cpu);
+	int (*percpu_deinit)(unsigned int cpu);
 };
 
 extern const struct evtchn_ops *evtchn_ops;
 
 extern int **evtchn_to_irq;
 int get_evtchn_to_irq(unsigned int evtchn);
+void handle_irq_for_port(evtchn_port_t port, struct evtchn_loop_ctrl *ctrl);
 
 struct irq_info *info_for_irq(unsigned irq);
 unsigned cpu_from_irq(unsigned irq);
@@ -132,9 +143,10 @@ static inline void unmask_evtchn(unsigned port)
 	return evtchn_ops->unmask(port);
 }
 
-static inline void xen_evtchn_handle_events(unsigned cpu)
+static inline void xen_evtchn_handle_events(unsigned cpu,
+					    struct evtchn_loop_ctrl *ctrl)
 {
-	return evtchn_ops->handle_events(cpu);
+	return evtchn_ops->handle_events(cpu, ctrl);
 }
 
 static inline void xen_evtchn_resume(void)
diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index 052b55a14ebc..a43930191e20 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -166,7 +166,6 @@ static irqreturn_t evtchn_interrupt(int irq, void *data)
 	     "Interrupt for port %d, but apparently not enabled; per-user %p\n",
 	     evtchn->port, u);
 
-	disable_irq_nosync(irq);
 	evtchn->enabled = false;
 
 	spin_lock(&u->ring_prod_lock);
@@ -292,7 +291,7 @@ static ssize_t evtchn_write(struct file *file, const char __user *buf,
 		evtchn = find_evtchn(u, port);
 		if (evtchn && !evtchn->enabled) {
 			evtchn->enabled = true;
-			enable_irq(irq_from_evtchn(port));
+			xen_irq_lateeoi(irq_from_evtchn(port), 0);
 		}
 	}
 
@@ -392,8 +391,8 @@ static int evtchn_bind_to_user(struct per_user_data *u, int port)
 	if (rc < 0)
 		goto err;
 
-	rc = bind_evtchn_to_irqhandler(port, evtchn_interrupt, 0,
-				       u->name, evtchn);
+	rc = bind_evtchn_to_irqhandler_lateeoi(port, evtchn_interrupt, 0,
+					       u->name, evtchn);
 	if (rc < 0)
 		goto err;
 
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index ffe9bd843922..9439de2ca0e4 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -66,6 +66,7 @@ struct sock_mapping {
 	atomic_t write;
 	atomic_t io;
 	atomic_t release;
+	atomic_t eoi;
 	void (*saved_data_ready)(struct sock *sk);
 	struct pvcalls_ioworker ioworker;
 };
@@ -87,7 +88,7 @@ static int pvcalls_back_release_active(struct xenbus_device *dev,
 				       struct pvcalls_fedata *fedata,
 				       struct sock_mapping *map);
 
-static void pvcalls_conn_back_read(void *opaque)
+static bool pvcalls_conn_back_read(void *opaque)
 {
 	struct sock_mapping *map = (struct sock_mapping *)opaque;
 	struct msghdr msg;
@@ -107,17 +108,17 @@ static void pvcalls_conn_back_read(void *opaque)
 	virt_mb();
 
 	if (error)
-		return;
+		return false;
 
 	size = pvcalls_queued(prod, cons, array_size);
 	if (size >= array_size)
-		return;
+		return false;
 	spin_lock_irqsave(&map->sock->sk->sk_receive_queue.lock, flags);
 	if (skb_queue_empty(&map->sock->sk->sk_receive_queue)) {
 		atomic_set(&map->read, 0);
 		spin_unlock_irqrestore(&map->sock->sk->sk_receive_queue.lock,
 				flags);
-		return;
+		return true;
 	}
 	spin_unlock_irqrestore(&map->sock->sk->sk_receive_queue.lock, flags);
 	wanted = array_size - size;
@@ -141,7 +142,7 @@ static void pvcalls_conn_back_read(void *opaque)
 	ret = inet_recvmsg(map->sock, &msg, wanted, MSG_DONTWAIT);
 	WARN_ON(ret > wanted);
 	if (ret == -EAGAIN) /* shouldn't happen */
-		return;
+		return true;
 	if (!ret)
 		ret = -ENOTCONN;
 	spin_lock_irqsave(&map->sock->sk->sk_receive_queue.lock, flags);
@@ -160,10 +161,10 @@ static void pvcalls_conn_back_read(void *opaque)
 	virt_wmb();
 	notify_remote_via_irq(map->irq);
 
-	return;
+	return true;
 }
 
-static void pvcalls_conn_back_write(struct sock_mapping *map)
+static bool pvcalls_conn_back_write(struct sock_mapping *map)
 {
 	struct pvcalls_data_intf *intf = map->ring;
 	struct pvcalls_data *data = &map->data;
@@ -180,7 +181,7 @@ static void pvcalls_conn_back_write(struct sock_mapping *map)
 	array_size = XEN_FLEX_RING_SIZE(map->ring_order);
 	size = pvcalls_queued(prod, cons, array_size);
 	if (size == 0)
-		return;
+		return false;
 
 	memset(&msg, 0, sizeof(msg));
 	msg.msg_flags |= MSG_DONTWAIT;
@@ -198,12 +199,11 @@ static void pvcalls_conn_back_write(struct sock_mapping *map)
 
 	atomic_set(&map->write, 0);
 	ret = inet_sendmsg(map->sock, &msg, size);
-	if (ret == -EAGAIN || (ret >= 0 && ret < size)) {
+	if (ret == -EAGAIN) {
 		atomic_inc(&map->write);
 		atomic_inc(&map->io);
+		return true;
 	}
-	if (ret == -EAGAIN)
-		return;
 
 	/* write the data, then update the indexes */
 	virt_wmb();
@@ -216,9 +216,13 @@ static void pvcalls_conn_back_write(struct sock_mapping *map)
 	}
 	/* update the indexes, then notify the other end */
 	virt_wmb();
-	if (prod != cons + ret)
+	if (prod != cons + ret) {
 		atomic_inc(&map->write);
+		atomic_inc(&map->io);
+	}
 	notify_remote_via_irq(map->irq);
+
+	return true;
 }
 
 static void pvcalls_back_ioworker(struct work_struct *work)
@@ -227,6 +231,7 @@ static void pvcalls_back_ioworker(struct work_struct *work)
 		struct pvcalls_ioworker, register_work);
 	struct sock_mapping *map = container_of(ioworker, struct sock_mapping,
 		ioworker);
+	unsigned int eoi_flags = XEN_EOI_FLAG_SPURIOUS;
 
 	while (atomic_read(&map->io) > 0) {
 		if (atomic_read(&map->release) > 0) {
@@ -234,10 +239,18 @@ static void pvcalls_back_ioworker(struct work_struct *work)
 			return;
 		}
 
-		if (atomic_read(&map->read) > 0)
-			pvcalls_conn_back_read(map);
-		if (atomic_read(&map->write) > 0)
-			pvcalls_conn_back_write(map);
+		if (atomic_read(&map->read) > 0 &&
+		    pvcalls_conn_back_read(map))
+			eoi_flags = 0;
+		if (atomic_read(&map->write) > 0 &&
+		    pvcalls_conn_back_write(map))
+			eoi_flags = 0;
+
+		if (atomic_read(&map->eoi) > 0 && !atomic_read(&map->write)) {
+			atomic_set(&map->eoi, 0);
+			xen_irq_lateeoi(map->irq, eoi_flags);
+			eoi_flags = XEN_EOI_FLAG_SPURIOUS;
+		}
 
 		atomic_dec(&map->io);
 	}
@@ -334,12 +347,9 @@ static struct sock_mapping *pvcalls_new_active_socket(
 		goto out;
 	map->bytes = page;
 
-	ret = bind_interdomain_evtchn_to_irqhandler(fedata->dev->otherend_id,
-						    evtchn,
-						    pvcalls_back_conn_event,
-						    0,
-						    "pvcalls-backend",
-						    map);
+	ret = bind_interdomain_evtchn_to_irqhandler_lateeoi(
+			fedata->dev->otherend_id, evtchn,
+			pvcalls_back_conn_event, 0, "pvcalls-backend", map);
 	if (ret < 0)
 		goto out;
 	map->irq = ret;
@@ -873,15 +883,18 @@ static irqreturn_t pvcalls_back_event(int irq, void *dev_id)
 {
 	struct xenbus_device *dev = dev_id;
 	struct pvcalls_fedata *fedata = NULL;
+	unsigned int eoi_flags = XEN_EOI_FLAG_SPURIOUS;
 
-	if (dev == NULL)
-		return IRQ_HANDLED;
+	if (dev) {
+		fedata = dev_get_drvdata(&dev->dev);
+		if (fedata) {
+			pvcalls_back_work(fedata);
+			eoi_flags = 0;
+		}
+	}
 
-	fedata = dev_get_drvdata(&dev->dev);
-	if (fedata == NULL)
-		return IRQ_HANDLED;
+	xen_irq_lateeoi(irq, eoi_flags);
 
-	pvcalls_back_work(fedata);
 	return IRQ_HANDLED;
 }
 
@@ -891,12 +904,15 @@ static irqreturn_t pvcalls_back_conn_event(int irq, void *sock_map)
 	struct pvcalls_ioworker *iow;
 
 	if (map == NULL || map->sock == NULL || map->sock->sk == NULL ||
-		map->sock->sk->sk_user_data != map)
+		map->sock->sk->sk_user_data != map) {
+		xen_irq_lateeoi(irq, 0);
 		return IRQ_HANDLED;
+	}
 
 	iow = &map->ioworker;
 
 	atomic_inc(&map->write);
+	atomic_inc(&map->eoi);
 	atomic_inc(&map->io);
 	queue_work(iow->wq, &iow->register_work);
 
@@ -931,7 +947,7 @@ static int backend_connect(struct xenbus_device *dev)
 		goto error;
 	}
 
-	err = bind_interdomain_evtchn_to_irq(dev->otherend_id, evtchn);
+	err = bind_interdomain_evtchn_to_irq_lateeoi(dev->otherend_id, evtchn);
 	if (err < 0)
 		goto error;
 	fedata->irq = err;
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 097410a7cdb7..adf3aae2939f 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -733,10 +733,17 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	wmb();
 	notify_remote_via_irq(pdev->evtchn_irq);
 
+	/* Enable IRQ to signal "request done". */
+	xen_pcibk_lateeoi(pdev, 0);
+
 	ret = wait_event_timeout(xen_pcibk_aer_wait_queue,
 				 !(test_bit(_XEN_PCIB_active, (unsigned long *)
 				 &sh_info->flags)), 300*HZ);
 
+	/* Enable IRQ for pcifront request if not already active. */
+	if (!test_bit(_PDEVF_op_active, &pdev->flags))
+		xen_pcibk_lateeoi(pdev, 0);
+
 	if (!ret) {
 		if (test_bit(_XEN_PCIB_active,
 			(unsigned long *)&sh_info->flags)) {
@@ -750,13 +757,6 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	}
 	clear_bit(_PCIB_op_pending, (unsigned long *)&pdev->flags);
 
-	if (test_bit(_XEN_PCIF_active,
-		(unsigned long *)&sh_info->flags)) {
-		dev_dbg(&psdev->dev->dev,
-			"schedule pci_conf service in " DRV_NAME "\n");
-		xen_pcibk_test_and_schedule_op(psdev->pdev);
-	}
-
 	res = (pci_ers_result_t)aer_op->err;
 	return res;
 }
diff --git a/drivers/xen/xen-pciback/pciback.h b/drivers/xen/xen-pciback/pciback.h
index 263c059bff90..235cdfe13494 100644
--- a/drivers/xen/xen-pciback/pciback.h
+++ b/drivers/xen/xen-pciback/pciback.h
@@ -14,6 +14,7 @@
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
 #include <linux/atomic.h>
+#include <xen/events.h>
 #include <xen/interface/io/pciif.h>
 
 #define DRV_NAME	"xen-pciback"
@@ -27,6 +28,8 @@ struct pci_dev_entry {
 #define PDEVF_op_active		(1<<(_PDEVF_op_active))
 #define _PCIB_op_pending	(1)
 #define PCIB_op_pending		(1<<(_PCIB_op_pending))
+#define _EOI_pending		(2)
+#define EOI_pending		(1<<(_EOI_pending))
 
 struct xen_pcibk_device {
 	void *pci_dev_data;
@@ -182,12 +185,17 @@ static inline void xen_pcibk_release_devices(struct xen_pcibk_device *pdev)
 irqreturn_t xen_pcibk_handle_event(int irq, void *dev_id);
 void xen_pcibk_do_op(struct work_struct *data);
 
+static inline void xen_pcibk_lateeoi(struct xen_pcibk_device *pdev,
+				     unsigned int eoi_flag)
+{
+	if (test_and_clear_bit(_EOI_pending, &pdev->flags))
+		xen_irq_lateeoi(pdev->evtchn_irq, eoi_flag);
+}
+
 int xen_pcibk_xenbus_register(void);
 void xen_pcibk_xenbus_unregister(void);
 
 extern int verbose_request;
-
-void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev);
 #endif
 
 /* Handles shared IRQs that can to device domain and control domain. */
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index 787966f44589..c4ed2c634ca7 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -297,26 +297,41 @@ int xen_pcibk_disable_msix(struct xen_pcibk_device *pdev,
 	return 0;
 }
 #endif
+
+static inline bool xen_pcibk_test_op_pending(struct xen_pcibk_device *pdev)
+{
+	return test_bit(_XEN_PCIF_active,
+			(unsigned long *)&pdev->sh_info->flags) &&
+	       !test_and_set_bit(_PDEVF_op_active, &pdev->flags);
+}
+
 /*
 * Now the same evtchn is used for both pcifront conf_read_write request
 * as well as pcie aer front end ack. We use a new work_queue to schedule
 * xen_pcibk conf_read_write service for avoiding confict with aer_core
 * do_recovery job which also use the system default work_queue
 */
-void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev)
+static void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev)
 {
+	bool eoi = true;
+
 	/* Check that frontend is requesting an operation and that we are not
 	 * already processing a request */
-	if (test_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags)
-	    && !test_and_set_bit(_PDEVF_op_active, &pdev->flags)) {
+	if (xen_pcibk_test_op_pending(pdev)) {
 		schedule_work(&pdev->op_work);
+		eoi = false;
 	}
 	/*_XEN_PCIB_active should have been cleared by pcifront. And also make
 	sure xen_pcibk is waiting for ack by checking _PCIB_op_pending*/
 	if (!test_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags)
 	    && test_bit(_PCIB_op_pending, &pdev->flags)) {
 		wake_up(&xen_pcibk_aer_wait_queue);
+		eoi = false;
 	}
+
+	/* EOI if there was nothing to do. */
+	if (eoi)
+		xen_pcibk_lateeoi(pdev, XEN_EOI_FLAG_SPURIOUS);
 }
 
 /* Performing the configuration space reads/writes must not be done in atomic
@@ -324,10 +339,8 @@ void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev)
  * use of semaphores). This function is intended to be called from a work
  * queue in process context taking a struct xen_pcibk_device as a parameter */
 
-void xen_pcibk_do_op(struct work_struct *data)
+static void xen_pcibk_do_one_op(struct xen_pcibk_device *pdev)
 {
-	struct xen_pcibk_device *pdev =
-		container_of(data, struct xen_pcibk_device, op_work);
 	struct pci_dev *dev;
 	struct xen_pcibk_dev_data *dev_data = NULL;
 	struct xen_pci_op *op = &pdev->op;
@@ -400,16 +413,31 @@ void xen_pcibk_do_op(struct work_struct *data)
 	smp_mb__before_atomic(); /* /after/ clearing PCIF_active */
 	clear_bit(_PDEVF_op_active, &pdev->flags);
 	smp_mb__after_atomic(); /* /before/ final check for work */
+}
 
-	/* Check to see if the driver domain tried to start another request in
-	 * between clearing _XEN_PCIF_active and clearing _PDEVF_op_active.
-	*/
-	xen_pcibk_test_and_schedule_op(pdev);
+void xen_pcibk_do_op(struct work_struct *data)
+{
+	struct xen_pcibk_device *pdev =
+		container_of(data, struct xen_pcibk_device, op_work);
+
+	do {
+		xen_pcibk_do_one_op(pdev);
+	} while (xen_pcibk_test_op_pending(pdev));
+
+	xen_pcibk_lateeoi(pdev, 0);
 }
 
 irqreturn_t xen_pcibk_handle_event(int irq, void *dev_id)
 {
 	struct xen_pcibk_device *pdev = dev_id;
+	bool eoi;
+
+	/* IRQs might come in before pdev->evtchn_irq is written. */
+	if (unlikely(pdev->evtchn_irq != irq))
+		pdev->evtchn_irq = irq;
+
+	eoi = test_and_set_bit(_EOI_pending, &pdev->flags);
+	WARN(eoi, "IRQ while EOI pending\n");
 
 	xen_pcibk_test_and_schedule_op(pdev);
 
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 833b2d2c4318..e7a670235965 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -123,7 +123,7 @@ static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref,
 
 	pdev->sh_info = vaddr;
 
-	err = bind_interdomain_evtchn_to_irqhandler(
+	err = bind_interdomain_evtchn_to_irqhandler_lateeoi(
 		pdev->xdev->otherend_id, remote_evtchn, xen_pcibk_handle_event,
 		0, DRV_NAME, pdev);
 	if (err < 0) {
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index ba0942e481bc..33d6499d8472 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -91,7 +91,6 @@ struct vscsibk_info {
 	unsigned int irq;
 
 	struct vscsiif_back_ring ring;
-	int ring_error;
 
 	spinlock_t ring_lock;
 	atomic_t nr_unreplied_reqs;
@@ -722,7 +721,8 @@ static struct vscsibk_pend *prepare_pending_reqs(struct vscsibk_info *info,
 	return pending_req;
 }
 
-static int scsiback_do_cmd_fn(struct vscsibk_info *info)
+static int scsiback_do_cmd_fn(struct vscsibk_info *info,
+			      unsigned int *eoi_flags)
 {
 	struct vscsiif_back_ring *ring = &info->ring;
 	struct vscsiif_request ring_req;
@@ -739,11 +739,12 @@ static int scsiback_do_cmd_fn(struct vscsibk_info *info)
 		rc = ring->rsp_prod_pvt;
 		pr_warn("Dom%d provided bogus ring requests (%#x - %#x = %u). Halting ring processing\n",
 			   info->domid, rp, rc, rp - rc);
-		info->ring_error = 1;
-		return 0;
+		return -EINVAL;
 	}
 
 	while ((rc != rp)) {
+		*eoi_flags &= ~XEN_EOI_FLAG_SPURIOUS;
+
 		if (RING_REQUEST_CONS_OVERFLOW(ring, rc))
 			break;
 
@@ -802,13 +803,16 @@ static int scsiback_do_cmd_fn(struct vscsibk_info *info)
 static irqreturn_t scsiback_irq_fn(int irq, void *dev_id)
 {
 	struct vscsibk_info *info = dev_id;
+	int rc;
+	unsigned int eoi_flags = XEN_EOI_FLAG_SPURIOUS;
 
-	if (info->ring_error)
-		return IRQ_HANDLED;
-
-	while (scsiback_do_cmd_fn(info))
+	while ((rc = scsiback_do_cmd_fn(info, &eoi_flags)) > 0)
 		cond_resched();
 
+	/* In case of a ring error we keep the event channel masked. */
+	if (!rc)
+		xen_irq_lateeoi(irq, eoi_flags);
+
 	return IRQ_HANDLED;
 }
 
@@ -829,7 +833,7 @@ static int scsiback_init_sring(struct vscsibk_info *info, grant_ref_t ring_ref,
 	sring = (struct vscsiif_sring *)area;
 	BACK_RING_INIT(&info->ring, sring, PAGE_SIZE);
 
-	err = bind_interdomain_evtchn_to_irq(info->domid, evtchn);
+	err = bind_interdomain_evtchn_to_irq_lateeoi(info->domid, evtchn);
 	if (err < 0)
 		goto unmap_page;
 
@@ -1252,7 +1256,6 @@ static int scsiback_probe(struct xenbus_device *dev,
 
 	info->domid = dev->otherend_id;
 	spin_lock_init(&info->ring_lock);
-	info->ring_error = 0;
 	atomic_set(&info->nr_unreplied_reqs, 0);
 	init_waitqueue_head(&info->waiting_to_free);
 	info->dev = dev;