ASoC: codecs: wcd938x: fix volatile register range

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[ Upstream commit ea157c2ba8 ]

Interrupt Clear registers WCD938X_INTR_CLEAR_0 -  WCD938X_INTR_CLEAR_2
are not marked as volatile. This has resulted in a missing interrupt bug
while performing runtime pm. regcache_sync() during runtime pm resume path
will write to Interrupt clear registers with previous values which basically
clears the pending interrupt and actual interrupt handler never sees this
interrupt.

This issue is more visible with headset plug-in plug-out case compared to
headset button.

Fix this by adding the Interrupt clear registers to volatile range

Fixes: 8d78602aa8 ("ASoC: codecs: wcd938x: add basic driver")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20211116114623.11891-2-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Srinivas Kandagatla 2021-11-16 11:46:21 +00:00 • committed by Greg Kroah-Hartman

parent 49475a2b29

commit de178246c3

1 changed files with 3 additions and 0 deletions

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sound/soc/codecs/wcd938x.c

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