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authorEric Long <eric.long@spreadtrum.com>2018-11-06 13:01:34 +0800
committerVinod Koul <vkoul@kernel.org>2018-12-05 14:27:12 +0530
commit0e5d7b1eb6fc06d2f9287519e238fa13efb69cee (patch)
tree8b3f575e8ce263dd88915a0cb569cfb671a0c19f
parent13e8997924a0df7f0136d742aa829b791889d3ce (diff)
downloadlinux-0e5d7b1eb6fc06d2f9287519e238fa13efb69cee.tar.bz2
dmaengine: sprd: Set cur_desc as NULL when free or terminate one dma channel
It will be failed to start one new transfer if the channel started one none interrupt transfer before, since we will only set the schan->cur_desc as NULL depending on the transfer interrupt now. Thus we should set schan->cur_desc as NULL when free or terminate one dma channel to avoid this issue. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
-rw-r--r--drivers/dma/sprd-dma.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index e6a74dc7da95..1b39661cd17b 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -439,6 +439,7 @@ static void sprd_dma_stop(struct sprd_dma_chn *schan)
sprd_dma_stop_and_disable(schan);
sprd_dma_unset_uid(schan);
sprd_dma_clear_int(schan);
+ schan->cur_desc = NULL;
}
static bool sprd_dma_check_trans_done(struct sprd_dma_desc *sdesc,