Am Dienstag, 27. Juni 2006 09:52 schrieb Franck Bui-Huu:
> + expire = timeout ? msecs_to_jiffies(timeout) : MAX_SCHEDULE_TIMEOUT;
> + if (!wait_for_completion_timeout(&done, expire)) {
> + usb_unlink_urb(urb);
> }
> -
> + status = urb->status;
Hm, is this racy?
What happens if usb_unlink_urb() and the completion handler race?
If usb_unlink_urb() fails to unlink the URB because it is too late,
is it guaranteed that urb->status is valid?
In the old version this could not happen because the completion was
always done.
Regards
Oliver
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