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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.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 5e5f65a475ab..da24c31ee00d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1315,11 +1315,12 @@ static int hcd_unlink_urb (struct urb *urb, int status)
* finish unlinking the initial failed usb_set_address()
* or device descriptor fetch.
*/
- if (!hcd->saw_irq && hcd->self.root_hub != urb->dev) {
+ if (!test_bit(HCD_FLAG_SAW_IRQ, &hcd->flags)
+ && hcd->self.root_hub != urb->dev) {
dev_warn (hcd->self.controller, "Unlink after no-IRQ? "
"Controller is probably using the wrong IRQ."
"\n");
- hcd->saw_irq = 1;
+ set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
}
urb->status = status;
@@ -1649,13 +1650,15 @@ irqreturn_t usb_hcd_irq (int irq, void *__hcd, struct pt_regs * r)
struct usb_hcd *hcd = __hcd;
int start = hcd->state;
- if (start == HC_STATE_HALT)
+ if (unlikely(start == HC_STATE_HALT ||
+ !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
return IRQ_NONE;
if (hcd->driver->irq (hcd, r) == IRQ_NONE)
return IRQ_NONE;
- hcd->saw_irq = 1;
- if (hcd->state == HC_STATE_HALT)
+ set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+
+ if (unlikely(hcd->state == HC_STATE_HALT))
usb_hc_died (hcd);
return IRQ_HANDLED;
}
@@ -1768,6 +1771,8 @@ int usb_add_hcd(struct usb_hcd *hcd,
dev_info(hcd->self.controller, "%s\n", hcd->product_desc);
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
/* till now HC has been in an indeterminate state ... */
if (hcd->driver->reset && (retval = hcd->driver->reset(hcd)) < 0) {
dev_err(hcd->self.controller, "can't reset\n");