From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Thu, 24 Sep 2015 09:03:35 +0000 (+0300)
Subject: dmaengine: fix balance of privatecnt
X-Git-Tag: omap-for-v4.3/fixes-rc5~51^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=214fc4e423ff38b41b60db2209cf49b4e9a7209b;p=pandora-kernel.git

dmaengine: fix balance of privatecnt

dma_release_channel() decrements privatecnt counter and almost all dma_get*
function increments it with the exception of dma_get_slave_channel().
In most cases this does not cause issue since normally the channel is not
requested and released, but if a driver requests DMA channel via
dma_get_slave_channel() and releases the channel the privatecnt will be
unbalanced and this will prevent for example getting channel for memcpy.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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