From: Viresh Kumar <viresh.kumar@st.com>
Date: Mon, 18 Apr 2011 09:24:56 +0000 (+0530)
Subject: dmaengine/dw_dmac: Divide one sg to many desc, if sg len is greater than DWC_MAX_COUNT
X-Git-Tag: v3.0-rc1~27^2~4^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69dc14b51c1aad9d82afd8f96bf4e4835089bffc;p=pandora-kernel.git

dmaengine/dw_dmac: Divide one sg to many desc, if sg len is greater than DWC_MAX_COUNT

If len passed in sg for slave_sg transfers is greater than DWC_MAX_COUNT, then
driver programmes controller incorrectly.  This patch adds code to handle this
situation by allocation more than one desc for same sg.

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