linux-kernel - Re: [Bug #13337] [post 2.6.29 regression] hang during suspend of b44/b43 modules

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Message-ID: <87k52izvd9.fsf@scholz.fias.uni-frankfurt.de>
Date:	Thu, 09 Jul 2009 00:02:26 +0200
From:	Jan Scholz <scholz@...s.uni-frankfurt.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, johannes@...solutions.net
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	"Tomas Janousek" <tomi@...i.cz>
Subject: Re: [Bug #13337] [post 2.6.29 regression] hang during suspend of b44/b43 modules

Hi,

I'm not sure if I experience the same bug on my apple iBook G4 (ppc
7447A, altivec supported PowerBook6,5) or just something very similar.

With v2.6.30-rc1 I noticed, that suspending to ram does not work if my
wireless card is 'up'. The wireless card is an apple airport extreme
card, this is its lspci output:

0001:10:12.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)

I tested suspend like this:

# unload the wireless module
modprobe -r b43
echo mem > /sys/power/state

# wake up works fine

#loading b43
modprobe b43
echo mem > /sys/power/state

# wake up still works fine

ifconfig wlan0 up
echo mem > /sys/power/state

# the box does not wake up, I guess it's not really sleeping, because
# the sleep led is not on

I bisected this and got:

5bb644a0fd25a5e083ecbfaa92a211db99aa6ef7 is first bad commit
commit 5bb644a0fd25a5e083ecbfaa92a211db99aa6ef7
Author: Johannes Berg <johannes@...solutions.net>
Date:   Sun May 17 11:40:42 2009 +0200
   
    mac80211: cancel/restart all timers across suspend/resume


Best regards,
    Jan Scholz

"Rafael J. Wysocki" <rjw@...k.pl> writes:

> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.29 and 2.6.30.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.29 and 2.6.30.  Please verify if it still should
> be listed and let me know (either way).
>
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=13337
> Subject		: [post 2.6.29 regression] hang during suspend of b44/b43 modules
> Submitter	: Tomas Janousek <tomi@...i.cz>
> Date		: 2009-05-18 10:59 (50 days old)
>
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