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| author | Jun Nie <jun.nie@linaro.org> | 2015-08-05 13:23:27 +0800 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-08-05 11:03:23 +0530 |
| commit | ed9c87b33147e5b007e66a282b9c8c307fbf8bf9 (patch) | |
| tree | 2f29cdbd77c858afe35126e39a203ba29e6c6f23 /drivers/dma | |
| parent | 2092539b7735906deda8b1fca4b31b4c4eb65e0d (diff) | |
| download | op-kernel-dev-ed9c87b33147e5b007e66a282b9c8c307fbf8bf9.zip op-kernel-dev-ed9c87b33147e5b007e66a282b9c8c307fbf8bf9.tar.gz | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/zx296702_dma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c index 103691c6..39915a6 100644 --- a/drivers/dma/zx296702_dma.c +++ b/drivers/dma/zx296702_dma.c @@ -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; |
