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path: root/drivers/usb/host/xhci.c
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Diffstat (limited to 'drivers/usb/host/xhci.c')
-rw-r--r--drivers/usb/host/xhci.c57
1 files changed, 51 insertions, 6 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index d9660eb97eb9..f5fe1ac301ab 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -430,12 +430,19 @@ int xhci_run(struct usb_hcd *hcd)
free_irq(hcd->irq, hcd);
hcd->irq = -1;
+ /* Some Fresco Logic host controllers advertise MSI, but fail to
+ * generate interrupts. Don't even try to enable MSI.
+ */
+ if (xhci->quirks & XHCI_BROKEN_MSI)
+ goto legacy_irq;
+
ret = xhci_setup_msix(xhci);
if (ret)
/* fall back to msi*/
ret = xhci_setup_msi(xhci);
if (ret) {
+legacy_irq:
/* fall back to legacy interrupt*/
ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
hcd->irq_descr, hcd);
@@ -752,6 +759,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
msleep(100);
spin_lock_irq(&xhci->lock);
+ if (xhci->quirks & XHCI_RESET_ON_RESUME)
+ hibernated = true;
if (!hibernated) {
/* step 1: restore register */
@@ -1394,6 +1403,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
u32 added_ctxs;
unsigned int last_ctx;
u32 new_add_flags, new_drop_flags, new_slot_info;
+ struct xhci_virt_device *virt_dev;
int ret = 0;
ret = xhci_check_args(hcd, udev, ep, 1, true, __func__);
@@ -1418,11 +1428,25 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
return 0;
}
- in_ctx = xhci->devs[udev->slot_id]->in_ctx;
- out_ctx = xhci->devs[udev->slot_id]->out_ctx;
+ virt_dev = xhci->devs[udev->slot_id];
+ in_ctx = virt_dev->in_ctx;
+ out_ctx = virt_dev->out_ctx;
ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx);
ep_index = xhci_get_endpoint_index(&ep->desc);
ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index);
+
+ /* If this endpoint is already in use, and the upper layers are trying
+ * to add it again without dropping it, reject the addition.
+ */
+ if (virt_dev->eps[ep_index].ring &&
+ !(le32_to_cpu(ctrl_ctx->drop_flags) &
+ xhci_get_endpoint_flag(&ep->desc))) {
+ xhci_warn(xhci, "Trying to add endpoint 0x%x "
+ "without dropping it.\n",
+ (unsigned int) ep->desc.bEndpointAddress);
+ return -EINVAL;
+ }
+
/* If the HCD has already noted the endpoint is enabled,
* ignore this request.
*/
@@ -1438,8 +1462,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
* process context, not interrupt context (or so documenation
* for usb_set_interface() and usb_set_configuration() claim).
*/
- if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id],
- udev, ep, GFP_NOIO) < 0) {
+ if (xhci_endpoint_init(xhci, virt_dev, udev, ep, GFP_NOIO) < 0) {
dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n",
__func__, ep->desc.bEndpointAddress);
return -ENOMEM;
@@ -1530,6 +1553,11 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci,
"and endpoint is not disabled.\n");
ret = -EINVAL;
break;
+ case COMP_DEV_ERR:
+ dev_warn(&udev->dev, "ERROR: Incompatible device for endpoint "
+ "configure command.\n");
+ ret = -ENODEV;
+ break;
case COMP_SUCCESS:
dev_dbg(&udev->dev, "Successful Endpoint Configure command\n");
ret = 0;
@@ -1564,6 +1592,11 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci,
xhci_dbg_ctx(xhci, virt_dev->out_ctx, 1);
ret = -EINVAL;
break;
+ case COMP_DEV_ERR:
+ dev_warn(&udev->dev, "ERROR: Incompatible device for evaluate "
+ "context command.\n");
+ ret = -ENODEV;
+ break;
case COMP_MEL_ERR:
/* Max Exit Latency too large error */
dev_warn(&udev->dev, "WARN: Max Exit Latency too large\n");
@@ -1849,8 +1882,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
/* Free any rings that were dropped, but not changed. */
for (i = 1; i < 31; ++i) {
- if ((ctrl_ctx->drop_flags & (1 << (i + 1))) &&
- !(ctrl_ctx->add_flags & (1 << (i + 1))))
+ if ((le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1))) &&
+ !(le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1))))
xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
}
xhci_zero_in_ctx(xhci, virt_dev);
@@ -2467,6 +2500,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
struct xhci_command *reset_device_cmd;
int timeleft;
int last_freed_endpoint;
+ struct xhci_slot_ctx *slot_ctx;
ret = xhci_check_args(hcd, udev, NULL, 0, false, __func__);
if (ret <= 0)
@@ -2499,6 +2533,12 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
return -EINVAL;
}
+ /* If device is not setup, there is no point in resetting it */
+ slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx);
+ if (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)) ==
+ SLOT_STATE_DISABLED)
+ return 0;
+
xhci_dbg(xhci, "Resetting device with slot ID %u\n", slot_id);
/* Allocate the command structure that holds the struct completion.
* Assume we're in process context, since the normal device reset
@@ -2839,6 +2879,11 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
dev_warn(&udev->dev, "Device not responding to set address.\n");
ret = -EPROTO;
break;
+ case COMP_DEV_ERR:
+ dev_warn(&udev->dev, "ERROR: Incompatible device for address "
+ "device command.\n");
+ ret = -ENODEV;
+ break;
case COMP_SUCCESS:
xhci_dbg(xhci, "Successful Address Device command\n");
break;