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dmaengine: zxdma: Fix force stop bug 

DMA will not stop when clearing enable bit till all transaction
is done. The bug is exposed in audio playback because ring DMA
chain never stop. Force hardware to stop with setting FORCE bit.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Jun Nie 2015-08-05 13:23:27 +08:00 committed by Vinod Koul
parent 2092539b77
commit ed9c87b331
1 changed files with 1 additions and 0 deletions
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drivers/dma/zx296702_dma.c
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@ -144,6 +144,7 @@ static void zx_dma_terminate_chan(struct zx_dma_phy *phy, struct zx_dma_dev *d)
val = readl_relaxed(phy->base + REG_ZX_CTRL);
val &= ~ZX_CH_ENABLE;
val |= ZX_FORCE_CLOSE;
writel_relaxed(val, phy->base + REG_ZX_CTRL);
val = 0x1 << phy->idx;