linux-kernel - Re: b43 locks the machine when resuming after suspend to disk

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Message-Id: <1215040064.13270.20.camel@johannes.berg>
Date:	Thu, 03 Jul 2008 01:07:44 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Giacomo Mulas <gmulas@...astro.it>, linux-kernel@...r.kernel.org,
	debian-kernel@...ts.debian.org,
	Broadcom Linux <bcm43xx-dev@...ts.berlios.de>
Subject: Re: b43 locks the machine when resuming after suspend to disk

On Thu, 2008-07-03 at 01:08 +0200, Rafael J. Wysocki wrote:
> On Thursday, 3 of July 2008, Johannes Berg wrote:
> > On Wed, 2008-07-02 at 23:40 +0200, Rafael J. Wysocki wrote:
> > > On Wednesday, 2 of July 2008, Giacomo Mulas wrote:
> > > > I tried searching on the list for this, before posting, but searching the
> > > > mailing list archives with keywords such as b43, suspend, resume... brings
> > > > up such a ludicrous amount of threads that it's not realistic to check them
> > > > all, so just tell me what to look for if it's been asked already.
> > > > 
> > > > Whenever I do a suspend to disk after using b43, the computer freezes hard
> > > > as soon as it attempts again to access b43 after resume.
> > > > 
> > > > Minimal how to reproduce the freeze:
> > > > 1) modprobe b43
> > > > 2) hibernate (using any suspend to disk, which one is irrelevant)
> > > > 3) resume
> > > > 4) ifconfig wlan0 up
> > 
> > > I think you need the appended patch, but it only applies to linux-next.
> > 
> > Rafael, you misled me :) This is a completely different thing.
> 
> Ah, sorry then.  I was too quick with my response.

No trouble, it reminded me that I wanted to ask stable to pick up that
patch anyway although I don't think we ever ran into the issue there.

This seems very odd though, Giacomo, are you sure it also happens if you
unload the module?

johannes

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