From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sun, 6 Jan 2013 10:10:44 +0000 (+0100)
Subject: dma: mv_xor: fix error handling for clocks
X-Git-Tag: v3.8-rc3~5^2~4^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dab9206445952e64213582b2ab9077972850d65b;p=pandora-kernel.git

dma: mv_xor: fix error handling for clocks

When a channel fails to initialize, we release all ressources,
including clocks. However, a XOR unit is not necessarily associated to
a clock (some variants of Marvell SoCs have a clock for XOR units,
some don't), so we shouldn't unconditionally be releasing the clock.

Instead, just like we do in the mv_xor_remove() function, we should
check if one clock was found before releasing it.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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