From: Lubomir Rintel lkundrak@v3.sk
[ Upstream commit 0c89446379218698189a47871336cb30286a7197 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/mmp_tdma.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index 13c68b6434ce2..15b4a44e60069 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -362,6 +362,8 @@ 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; }