From: Qiao Zhou <zhouqiao@marvell.com>
Date: Sat, 15 Jun 2013 04:51:48 +0000 (+0800)
Subject: dma: mmp_tdma: disable irq when disabling dma channel
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8e3c518fba4f2ddd192171cbd7b23ec26900bf6b;p=openwrt%2Fstaging%2Fblogic.git

dma: mmp_tdma: disable irq when disabling dma channel

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>
---

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 43d5a6c33297..9b9366537d73 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;
 }