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[PATCH] usb-storage: wait for URB to complete

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We all failed to notice that Franck's recent update to usb-storage allowed
an URB to complete after its context data was no longer valid.  This patch
(as746) makes the driver wait for the URB to complete whenever there's a
timeout.

Although timeouts in usb-storage are relatively uncommon, they do occur.
Without this patch the code in 2.6.18-rc1 will fault within an interrupt
handler, which is not nice at all.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alan Stern 2006-07-10 04:44:47 -07:00 committed by Linus Torvalds
parent 82081797b7
commit d6b7d3b620
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/storage/transport.c
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@ -180,7 +180,7 @@ static int usb_stor_msg_common(struct us_data *us, int timeout)
if (timeleft <= 0) {
US_DEBUGP("%s -- cancelling URB\n",
timeleft == 0 ? "Timeout" : "Signal");
usb_unlink_urb(us->current_urb);
usb_kill_urb(us->current_urb);
}
/* return the URB status */