dmaengine: imx-sdma: fix pagefault when channel is disabled during interrupt

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Add a spinlock and a 'enabled' boolean on channel descriptor, to avoid
using buffer descriptors in the interrupt context,
when sdma_disable_channel is called meanwhile.

Signed-off-by: Thierry Bultel <tbultel@pixelsurmer.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

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Thierry Bultel 2018-03-05 14:27:18 +01:00 • committed by Vinod Koul

parent 7928b2cbe5

commit 2746e2c389

1 changed files with 21 additions and 0 deletions

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drivers/dma/imx-sdma.c

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