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path: root/drivers/usb/core/hcd.c
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Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c31
1 files changed, 6 insertions, 25 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 13222d352a61..eb19cba34ac9 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -658,7 +658,7 @@ error:
len > offsetof(struct usb_device_descriptor,
bDeviceProtocol))
((struct usb_device_descriptor *) ubuf)->
- bDeviceProtocol = 1;
+ bDeviceProtocol = USB_HUB_PR_HS_SINGLE_TT;
}
/* any errors get returned through the urb completion */
@@ -1168,20 +1168,6 @@ int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb,
if (urb->unlinked)
return -EBUSY;
urb->unlinked = status;
-
- /* IRQ setup can easily be broken so that USB controllers
- * never get completion IRQs ... maybe even the ones we need to
- * finish unlinking the initial failed usb_set_address()
- * or device descriptor fetch.
- */
- if (!HCD_SAW_IRQ(hcd) && !is_root_hub(urb->dev)) {
- dev_warn(hcd->self.controller, "Unlink after no-IRQ? "
- "Controller is probably using the wrong IRQ.\n");
- set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
- if (hcd->shared_hcd)
- set_bit(HCD_FLAG_SAW_IRQ, &hcd->shared_hcd->flags);
- }
-
return 0;
}
EXPORT_SYMBOL_GPL(usb_hcd_check_unlink_urb);
@@ -1412,11 +1398,10 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
ret = -EAGAIN;
else
urb->transfer_flags |= URB_DMA_MAP_SG;
- if (n != urb->num_sgs) {
- urb->num_sgs = n;
+ urb->num_mapped_sgs = n;
+ if (n != urb->num_sgs)
urb->transfer_flags |=
URB_DMA_SG_COMBINED;
- }
} else if (urb->sg) {
struct scatterlist *sg = urb->sg;
urb->transfer_dma = dma_map_page(
@@ -2148,16 +2133,12 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd)
*/
local_irq_save(flags);
- if (unlikely(HCD_DEAD(hcd) || !HCD_HW_ACCESSIBLE(hcd))) {
+ if (unlikely(HCD_DEAD(hcd) || !HCD_HW_ACCESSIBLE(hcd)))
rc = IRQ_NONE;
- } else if (hcd->driver->irq(hcd) == IRQ_NONE) {
+ else if (hcd->driver->irq(hcd) == IRQ_NONE)
rc = IRQ_NONE;
- } else {
- set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
- if (hcd->shared_hcd)
- set_bit(HCD_FLAG_SAW_IRQ, &hcd->shared_hcd->flags);
+ else
rc = IRQ_HANDLED;
- }
local_irq_restore(flags);
return rc;