dmaengine: sf-pdma: Fix an error that calls callback twice

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Because a callback is called twice when DMA transfer complete
the second callback may be possible to access a freed memory
if the first callback routines perform the dma_release_channel function.
So this patch serialized the callback functions

Signed-off-by: Brad Kim <brad.kim@semifive.com>
Tested-and-reviewed-by: Green Wan <green.wan@sifive.com>
Signed-off-by: Brad Kim <brad.kim@sifive.com>
Link: https://lore.kernel.org/r/20200903111726.3413-1-brad.kim@sifive.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Brad Kim 2020-09-03 20:17:26 +09:00 • committed by Vinod Koul

parent 78e7a52269

commit 8f6b6d0606

1 changed files with 5 additions and 5 deletions

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drivers/dma/sf-pdma/sf-pdma.c

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