Commit 0c894463 authored Apr 19, 2020 by Lubomir Rintel Committed by Vinod Koul Apr 23, 2020

dmaengine: mmp_tdma: Reset channel error on release



When a channel configuration fails, the status of the channel is set to
DEV_ERROR so that an attempt to submit it fails. However, this status
sticks until the heat end of the universe, making it impossible to
recover from the error.

Let's reset it when the channel is released so that further use of the
channel with correct configuration is not impacted.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200419164912.670973-5-lkundrak@v3.sk


Signed-off-by: Vinod Koul <vkoul@kernel.org>

parent 363c3270

drivers/dma/mmp_tdma.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -363,6 +363,8 @@ static void mmp_tdma_free_descriptor(struct mmp_tdma_chan *tdmac)
		gen_pool_free(gpool, (unsigned long)tdmac->desc_arr,
		size);
		tdmac->desc_arr = NULL;
		if (tdmac->status == DMA_ERROR)
		tdmac->status = DMA_COMPLETE;

		return;
		}

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