From 569432efa7975f5795efb8142134f5a098942381 Mon Sep 17 00:00:00 2001
From: Viresh Kumar <viresh.kumar@st.com>
Date: Thu, 3 Mar 2011 15:47:17 +0530
Subject: [PATCH] dw_dmac: Calling dwc_scan_descriptors from dwc_tx_status()
 after taking lock

Lock must be taken before calling dwc_scan_descriptors, as this may
access/modify shared data and queues. dwc_tx_status wasn't taking lock before
calling this routine. This patch add code that takes lock before calling
dwc_scan_descriptors.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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