dma/imx-sdma: convernt to use bit ops

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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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Richard Zhao 2012-01-13 11:10:01 +08:00 • committed by Vinod Koul

parent b78bd91f47

commit 0bbc141302

1 changed files with 34 additions and 34 deletions

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drivers/dma/imx-sdma.c

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