dmaengine: apple-admac: Handle 'global' interrupt flags

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[ Upstream commit a288fd158f ]

In addition to TX channel and RX channel interrupt flags there's
another class of 'global' interrupt flags with unknown semantics. Those
weren't being handled up to now, and they are the suspected cause of
stuck IRQ states that have been sporadically occurring. Check the global
flags and clear them if raised.

Fixes: b127315d9a ("dmaengine: apple-admac: Add Apple ADMAC driver")
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20230224152222.26732-1-povik+lin@cutebit.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Martin Povišer 2023-02-24 16:22:20 +01:00 • committed by Greg Kroah-Hartman

parent 37b39345b9

commit c7bb085947

1 changed files with 10 additions and 2 deletions

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drivers/dma/apple-admac.c

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