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dmaengine: ti: k3-udma: Fix the running channel handling in alloc_chan_resources

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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@ti.com>
Link: https://lore.kernel.org/r/20200527070612.636-3-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Peter Ujfalusi 2020-05-27 10:06:12 +03:00 • committed by Vinod Koul
parent 5a9377cc74
commit b5b0180c2f
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/ti/k3-udma.c
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@ -1848,7 +1848,7 @@ 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);
ret = -EBUSY;