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    SubjectRe: WARNING: at drivers/usb/host/ehci-hcd.c:287
    On Tuesday 04 March 2008, Alan Stern wrote:
    > Dave, it seems to me that this must be an example of a race between the
    > iaa watchdog timer expiring and end_unlink_async() running.  It's not
    > good enough for end_unlink_async() to call iaa_watchdog_done(), because
    > on an SMP system the timer may already have fired and the watchdog
    > routine may be spinning on ehci->lock.


    > How about replacing the
    >         WARN_ON(!ehci->reclaim);

    Or bettter yet, just removing it entirely. ISTR doing that in some
    patches I've not yet sent for merging, and expect that's what my
    preferred fix will be ...

    - Dave
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