iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dma: mmp_tdma: disable irq when disabling dma channel

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/dma/mmp_tdma.c
View File

@ -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;
}