From 31705e21f9b5a0628c043f88ff4d20488b47b8ab Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Mon, 2 May 2011 07:59:02 +0000
Subject: [PATCH] dmaengine: shdma: synchronize RCU before freeing, simplify
 spinlock

List elements, deleted using list_del_rcu(), cannot be freed without
synchronising RCU. Further, the spinlock, used to protect the RCU
writer, is called in process context, so, we don't have to save flags.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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