PCI Hotplug core: add 'name' param pci_hp_register interface

commit 1359f2701b96abd9bb69c1273fb995a093b6409a upstream.

Update pci_hp_register() to take a const char *name parameter.

The motivation for this is to clean up the individual hotplug
drivers so that each one does not have to manage its own name.
The PCI core should be the place where we manage the name.

We update the interface and all callsites first, in a
"no functional change" manner, and clean up the drivers later.

Cc: kristen.c.accardi@intel.com
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

10 files changed, 25 insertions, 16 deletions

diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index 0e496e866a84..e9841765339f 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -340,7 +340,8 @@ int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
 
 	retval = pci_hp_register(slot->hotplug_slot,
 					acpiphp_slot->bridge->pci_bus,
-					acpiphp_slot->device);
+					acpiphp_slot->device,
+					slot->name);
 	if (retval == -EBUSY)
 		goto error_hpslot;
 	if (retval) {
diff --git a/drivers/pci/hotplug/cpci_hotplug_core.c b/drivers/pci/hotplug/cpci_hotplug_core.c
index 935947991dc9..5e5dee85763c 100644
--- a/drivers/pci/hotplug/cpci_hotplug_core.c
+++ b/drivers/pci/hotplug/cpci_hotplug_core.c
@@ -285,7 +285,8 @@ cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last)
 		info->attention_status = cpci_get_attention_status(slot);
 
 		dbg("registering slot %s", slot->hotplug_slot->name);
-		status = pci_hp_register(slot->hotplug_slot, bus, i);
+		status = pci_hp_register(slot->hotplug_slot, bus, i,
+					 slot->hotplug_slot->name);
 		if (status) {
 			err("pci_hp_register failed with error %d", status);
 			goto error_name;
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 87a68d298a45..0fdb2ad15983 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -436,7 +436,8 @@ static int ctrl_slot_setup(struct controller *ctrl,
 				slot_number);
 		result = pci_hp_register(hotplug_slot,
 					 ctrl->pci_dev->bus,
-					 slot->device);
+					 slot->device,
+					 hotplug_slot->name);
 		if (result) {
 			err("pci_hp_register failed with error %d\n", result);
 			goto error_name;
diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c
index 146ca9cd1567..3069f2153832 100644
--- a/drivers/pci/hotplug/fakephp.c
+++ b/drivers/pci/hotplug/fakephp.c
@@ -126,7 +126,8 @@ static int add_slot(struct pci_dev *dev)
 	slot->release = &dummy_release;
 	slot->private = dslot;
 
-	retval = pci_hp_register(slot, dev->bus, PCI_SLOT(dev->devfn));
+	retval = pci_hp_register(slot, dev->bus, PCI_SLOT(dev->devfn),
+				 slot->name);
 	if (retval) {
 		err("pci_hp_register failed with error %d\n", retval);
 		goto error_dslot;
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index 8467d0287325..46deff3e13e2 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -1002,7 +1002,8 @@ static int __init ebda_rsrc_controller (void)
 
 		snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
 		pci_hp_register(tmp_slot->hotplug_slot,
-			pci_find_bus(0, tmp_slot->bus), tmp_slot->device);
+			pci_find_bus(0, tmp_slot->bus), tmp_slot->device,
+			tmp_slot->hotplug_slot->name);
 	}
 
 	print_ebda_hpc ();
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index 5f85b1b120e3..3e37d636432b 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -547,13 +547,15 @@ out:
  * @bus: bus this slot is on
  * @slot: pointer to the &struct hotplug_slot to register
  * @slot_nr: slot number
+ * @name: name registered with kobject core
  *
  * Registers a hotplug slot with the pci hotplug subsystem, which will allow
  * userspace interaction to the slot.
  *
  * Returns 0 if successful, anything else for an error.
  */
-int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr)
+int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr,
+			const char *name)
 {
 	int result;
 	struct pci_slot *pci_slot;
@@ -569,7 +571,7 @@ int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr)
 	}
 
 	/* Check if we have already registered a slot with the same name. */
-	if (get_slot_from_name(slot->name))
+	if (get_slot_from_name(name))
 		return -EEXIST;
 
 	/*
@@ -577,7 +579,7 @@ int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr)
 	 * driver and call it here again. If we've already created the
 	 * pci_slot, the interface will simply bump the refcount.
 	 */
-	pci_slot = pci_create_slot(bus, slot_nr, slot->name);
+	pci_slot = pci_create_slot(bus, slot_nr, name);
 	if (IS_ERR(pci_slot))
 		return PTR_ERR(pci_slot);
 
@@ -593,8 +595,8 @@ int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr)
 	/*
 	 * Allow pcihp drivers to override the ACPI_PCI_SLOT name.
 	 */
-	if (strcmp(kobject_name(&pci_slot->kobj), slot->name)) {
-		result = kobject_rename(&pci_slot->kobj, slot->name);
+	if (strcmp(kobject_name(&pci_slot->kobj), name)) {
+		result = kobject_rename(&pci_slot->kobj, name);
 		if (result) {
 			pci_destroy_slot(pci_slot);
 			return result;
@@ -607,8 +609,7 @@ int pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus, int slot_nr)
 
 	result = fs_add_slot(pci_slot);
 	kobject_uevent(&pci_slot->kobj, KOBJ_ADD);
-	dbg("Added slot %s to the list\n", slot->name);
-
+	dbg("Added slot %s to the list\n", name);
 
 	return result;
 }
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 4fd5355bc3b5..cbd84f8b4b5c 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -221,7 +221,8 @@ static int init_slots(struct controller *ctrl)
 duplicate_name:
 		retval = pci_hp_register(hotplug_slot,
 					 ctrl->pci_dev->subordinate,
-					 slot->device);
+					 slot->device,
+					 slot->name);
 		if (retval) {
 			/*
 			 * If slot N already exists, we'll try to create
diff --git a/drivers/pci/hotplug/rpaphp_slot.c b/drivers/pci/hotplug/rpaphp_slot.c
index 9b714ea93d20..30d430bc4cbb 100644
--- a/drivers/pci/hotplug/rpaphp_slot.c
+++ b/drivers/pci/hotplug/rpaphp_slot.c
@@ -137,7 +137,7 @@ int rpaphp_register_slot(struct slot *slot)
 		slotno = PCI_SLOT(PCI_DN(slot->dn->child)->devfn);
 	else
 		slotno = -1;
-	retval = pci_hp_register(php_slot, slot->bus, slotno);
+	retval = pci_hp_register(php_slot, slot->bus, slotno, slot->name);
 	if (retval) {
 		err("pci_hp_register failed with error %d\n", retval);
 		return retval;
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index 410fe0394a8e..6d20bbd4359a 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -653,7 +653,8 @@ static int sn_hotplug_slot_register(struct pci_bus *pci_bus)
 		bss_hotplug_slot->ops = &sn_hotplug_slot_ops;
 		bss_hotplug_slot->release = &sn_release_slot;
 
-		rc = pci_hp_register(bss_hotplug_slot, pci_bus, device);
+		rc = pci_hp_register(bss_hotplug_slot, pci_bus, device,
+				     bss_hotplug_slot->name);
 		if (rc)
 			goto register_err;
 
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index cc38615395f1..bf5096612aab 100644
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -146,7 +146,8 @@ static int init_slots(struct controller *ctrl)
 		    slot->hp_slot, slot->number, ctrl->slot_device_offset);
 duplicate_name:
 		retval = pci_hp_register(slot->hotplug_slot,
-				ctrl->pci_dev->subordinate, slot->device);
+				ctrl->pci_dev->subordinate, slot->device,
+				hotplug_slot->name);
 		if (retval) {
 			/*
 			 * If slot N already exists, we'll try to create