From: Peter Ujfalusi <peter.ujfalusi@xxxxxx> [ Upstream commit b5b0180c2f767e90b4a6a885a0a2abaab6e3d48d ] In the unlikely case when the channel is running (RT enabled) during alloc_chan_resources then we should use udma_reset_chan() and not udma_stop() as the later is trying to initiate a teardown on the channel, which is not valid at this point. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx> Link: https://lore.kernel.org/r/20200527070612.636-3-peter.ujfalusi@xxxxxx Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/dma/ti/k3-udma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 2e20fab413b94..48176938e49ca 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -1868,7 +1868,7 @@ static int udma_alloc_chan_resources(struct dma_chan *chan) if (udma_is_chan_running(uc)) { dev_warn(ud->dev, "chan%d: is running!\n", uc->id); - udma_stop(uc); + udma_reset_chan(uc, false); if (udma_is_chan_running(uc)) { dev_err(ud->dev, "chan%d: won't stop!\n", uc->id); goto err_res_free; -- 2.25.1
