ASoC: max98090: Reject invalid values in custom control put()
authorMark Brown <broonie@kernel.org>
Wed, 20 Apr 2022 19:34:53 +0000 (20:34 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 18 May 2022 07:47:26 +0000 (09:47 +0200)
commit5c766c000a644bb483904a54041a092f5a078bad
treeb716c78c2e737f5ebee97a08d53f3d524de1a512
parent22f6c68b4927748121de48ff23330643d4a7df50
ASoC: max98090: Reject invalid values in custom control put()

[ Upstream commit 2fbe467bcbfc760a08f08475eea6bbd4c2874319 ]

The max98090 driver has a custom put function for some controls which can
only be updated in certain circumstances which makes no effort to validate
that input is suitable for the control, allowing out of spec values to be
written to the hardware and presented to userspace. Fix this by returning
an error when invalid values are written.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220420193454.2647908-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
sound/soc/codecs/max98090.c