From: Richard Zhao <richard.zhao@linaro.org>
Date: Fri, 13 Jan 2012 03:10:01 +0000 (+0800)
Subject: dma/imx-sdma: convernt to use bit ops
X-Git-Tag: v3.4-rc1~39^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0bbc1413028e93629a2ecd5588cc427fa834404b;p=pandora-kernel.git

dma/imx-sdma: convernt to use bit ops

We don't need extra lock, so we use non-atomic bit ops to set/clear bits,

merge event_mask0 and event_mask1 into an array, it helps use bit ops.

It also fixs the issue:

sdmac->event_mask0 = 1 << sdmac->event_id0;
sdmac->event_mask1 = 1 << (sdmac->event_id0 - 32);

It event_id0 < 32, it shifts negative number. If event_id0 >= 32, it
shifts number >= sizeof(int). Both the cases behavior is undefined.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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