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dma: mmp_tdma: disable irq when disabling dma channel

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mask dma irq when disabling dma channel, so that interrupt status
will not be set and interrupt won't come again.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Acked-by: Zhangfei Gao <zhangfei.gao@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Qiao Zhou 2013-06-15 12:51:48 +08:00 • committed by Vinod Koul
parent d7cabeed83
commit 8e3c518fba
1 changed files with 4 additions and 0 deletions
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4
drivers/dma/mmp_tdma.c
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@ -154,6 +154,10 @@ static void mmp_tdma_disable_chan(struct mmp_tdma_chan *tdmac)
{
writel(readl(tdmac->reg_base + TDCR) & ~TDCR_CHANEN,
tdmac->reg_base + TDCR);
/* disable irq */
writel(0, tdmac->reg_base + TDIMR);
tdmac->status = DMA_SUCCESS;
}