From: Magnus Damm <damm@opensource.se>
Date: Tue, 24 May 2011 10:31:12 +0000 (+0000)
Subject: dmaengine: shdma: Make second memory window optional
X-Git-Tag: v3.0-rc1~155^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26fc02ab5551349b2e593829a76cb44328ee7f61;p=pandora-kernel.git

dmaengine: shdma: Make second memory window optional

This patch makes the shdma.c driver allow slave operation
on DMA hardware mapped with a single I/O-memory window.

The dmae_set_dmars() function is adjusted to use the
first memory window in case of a missing DMARS window.

At probe() time the code is updated to enable DMA_SLAVE
only if slave information is passed with the platform data.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

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