From: Darren Hart <dvhltc@us.ibm.com>
Date: Wed, 5 Aug 2009 19:05:21 +0000 (-0700)
Subject: rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()
X-Git-Tag: v2.6.31-rc6~34^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1bbf20835c4e088667a090ce6523a0f70b62dc76;p=pandora-kernel.git

rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()

In the event of a lock steal or owner died,
rt_mutex_start_proxy_lock() will give the rt_mutex to the
waiting task, but it fails to release the wait_lock. This leads
to subsequent deadlocks when other tasks try to acquire the
rt_mutex.

I also removed a few extra blank lines that really spaced this
routine out. I must have been high on the \n when I wrote this
originally...

Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Dinakar Guniguntala <dino@in.ibm.com>
Cc: John Stultz <johnstul@linux.vnet.ibm.com>
LKML-Reference: <4A79D7F1.4000405@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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