diff options
Diffstat (limited to 'drivers/usb/host/ehci-sched.c')
| -rw-r--r-- | drivers/usb/host/ehci-sched.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index f0c8aa1ccd5d..57e77374d228 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -602,6 +602,12 @@ static int intr_submit ( spin_lock_irqsave (&ehci->lock, flags); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) { + status = -ESHUTDOWN; + goto done; + } + /* get qh and force any scheduling errors */ INIT_LIST_HEAD (&empty); qh = qh_append_tds (ehci, urb, &empty, epnum, &ep->hcpriv); @@ -1456,7 +1462,11 @@ static int itd_submit (struct ehci_hcd *ehci, struct urb *urb, /* schedule ... need to lock */ spin_lock_irqsave (&ehci->lock, flags); - status = iso_stream_schedule (ehci, urb, stream); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) + status = -ESHUTDOWN; + else + status = iso_stream_schedule (ehci, urb, stream); if (likely (status == 0)) itd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); spin_unlock_irqrestore (&ehci->lock, flags); @@ -1815,7 +1825,11 @@ static int sitd_submit (struct ehci_hcd *ehci, struct urb *urb, /* schedule ... need to lock */ spin_lock_irqsave (&ehci->lock, flags); - status = iso_stream_schedule (ehci, urb, stream); + if (unlikely(!test_bit(HCD_FLAG_HW_ACCESSIBLE, + &ehci_to_hcd(ehci)->flags))) + status = -ESHUTDOWN; + else + status = iso_stream_schedule (ehci, urb, stream); if (status == 0) sitd_link_urb (ehci, urb, ehci->periodic_size << 3, stream); spin_unlock_irqrestore (&ehci->lock, flags); |