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 07:18:07 +0000 (09:18 +0200)
commitee46fbb0d2dbc965f66d2975e90b4f233a7c2920
treefd64540b987206aad555b0597d7c87b6145076d9
parent76e9dd91a84af5610293004c00f1111ce5724b58
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