Commit 0e5d7b1e authored Nov 06, 2018 by Eric Long Committed by Vinod Koul Dec 05, 2018

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>

parent 13e89979

drivers/dma/sprd-dma.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -439,6 +439,7 @@ static void sprd_dma_stop(struct sprd_dma_chn *schan)
	sprd_dma_stop_and_disable(schan);		sprd_dma_stop_and_disable(schan);
	sprd_dma_unset_uid(schan);		sprd_dma_unset_uid(schan);
	sprd_dma_clear_int(schan);		sprd_dma_clear_int(schan);
			schan->cur_desc = NULL;
	}		}

	static bool sprd_dma_check_trans_done(struct sprd_dma_desc *sdesc,		static bool sprd_dma_check_trans_done(struct sprd_dma_desc *sdesc,

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