[PATCH] Fix USB suspend/resume crasher
arekm at pld-linux.org
Fri Nov 25 03:52:24 EST 2005
On Wednesday 23 November 2005 04:08, Benjamin Herrenschmidt wrote:
> This is my latest patch against current linus -git, it closes the IRQ
> race and makes various other OHCI & EHCI code path safer vs.
> suspend/resume. I've been able to (finally !) successfully suspend and
> resume various Mac models, with or without USB mouse plugged, or
> plugging while asleep, or unplugging while asleep etc... all without a
> crash. There are still some races here or there in the USB code, but at
> least the main cause of crash is now fixes by this patch (access to a
> controller that has been suspended, due to either shared interrupts or
> other code path).
btw. what should happen if there are drivers which do not support
I'm using zd1211 wifi usb driver (which isn't state of art) from
http://zd1211.ath.cx/repos/trunk rev 39 and while trying to suspend on my
ibook g4 dec 2004 I'm getting this:
After that the only thing I can do is turn the thing off and turn it back on -
it just hangs. It would be nice if it just refuse to suspend or got things
back into sane state.
I'm using 2.6.15rc2git3 + both patches posted in this thread.
My usual suspend is:
(I guess that rmmod zd1211 should be enough now).
Arkadiusz Miśkiewicz PLD/Linux Team
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