From: Nicolas Ferre <nicolas.ferre@atmel.com>
Date: Wed, 12 Jan 2011 14:39:10 +0000 (+0100)
Subject: dmaengine: at_hdmac: fix race while monitoring channel status
X-Git-Tag: v2.6.38-rc1~25^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dda36f9821321edf65d69da5c0807df7e73d26fc;p=pandora-kernel.git

dmaengine: at_hdmac: fix race while monitoring channel status

We were reading channel status then taking a lock. This lead to a race because
this lock may delay us and then make this channel not idle anymore.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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