Re: WARNING: at drivers/usb/host/ehci-hcd.c:287
From: David Brownell
Date: Tue Mar 04 2008 - 15:51:22 EST
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.
Right.
> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/