[PATCH V2] dma: mmp_tdma: disable irq when disabling dma channel

[Qiao Zhou <zhouqiao@marvell.com>]

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>
---
 drivers/dma/mmp_tdma.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 43d5a6c..9b93665 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -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;
 }
 
-- 
1.7.0.4