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authorEric Long <eric.long@unisoc.com>2019-05-06 15:28:30 +0800
committerVinod Koul <vkoul@kernel.org>2019-05-21 19:23:54 +0530
commit3d626a97f0303e9c30d063434b749de3f0f91fb5 (patch)
tree274fac1846ee51d0f0910832b23e1f936ecf44da /drivers/dma
parent58152b0e573e5581c4b9ef7cf06d2e9fafae27d4 (diff)
downloadlinux-3d626a97f0303e9c30d063434b749de3f0f91fb5.tar.bz2
dmaengine: sprd: Fix the incorrect start for 2-stage destination channels
The 2-stage destination channel will be triggered by source channel automatically, which means we should not trigger it by software request. Signed-off-by: Eric Long <eric.long@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/sprd-dma.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index 431e289d59a5..0f92e60529d1 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -510,7 +510,9 @@ static void sprd_dma_start(struct sprd_dma_chn *schan)
sprd_dma_set_uid(schan);
sprd_dma_enable_chn(schan);
- if (schan->dev_id == SPRD_DMA_SOFTWARE_UID)
+ if (schan->dev_id == SPRD_DMA_SOFTWARE_UID &&
+ schan->chn_mode != SPRD_DMA_DST_CHN0 &&
+ schan->chn_mode != SPRD_DMA_DST_CHN1)
sprd_dma_soft_request(schan);
}