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 07:42:48 +0000 (09:42 +0200)
commit423178bb4103730c45fafb0044f094c307f3ae4d
tree00afac15e100fd62819f65f4b57473320110db4b
parente4030f79bae5b1ee9759b7e962bd6059ff1228d4
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