From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 3 Feb 2011 14:09:41 +0000 (+0100)
Subject: lockdep, timer: Fix del_timer_sync() annotation
X-Git-Tag: v2.6.38-rc4~10^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f266a5110d453b7987194460ac7edd31f1a5426c;p=pandora-kernel.git

lockdep, timer: Fix del_timer_sync() annotation

Calling local_bh_enable() will want to actually start processing
softirqs, which isn't a good idea since this can get called with IRQs
disabled.

Cure this by using _local_bh_enable() which doesn't start processing
softirqs, and use raw_local_irq_save() to avoid any softirqs from
happening without letting lockdep think IRQs are in fact disabled.

Reported-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Yong Zhang <yong.zhang0@gmail.com>
LKML-Reference: <20110203141548.039540914@chello.nl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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