From: Xiang Wang <wangx@marvell.com>
Date: Tue, 18 Jun 2013 06:55:58 +0000 (+0800)
Subject: dma: mmp_pdma: add protect when alloc/free phy channels
X-Git-Tag: v3.12-rc1~68^2~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=027f28b7bb589d726e3b6274a7d9272336522c65;p=pandora-kernel.git

dma: mmp_pdma: add protect when alloc/free phy channels

In mmp pdma, phy channels are allocated/freed dynamically
and frequently. But no proper protection is added.
Conflict will happen when multi-users are requesting phy
channels at the same time. Use spinlock to protect.

Signed-off-by: Xiang Wang <wangx@marvell.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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