ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()

stable inclusion
from stable-v5.10.160
commit 50b5f6d4d9d2d69a7498c44fd8b26e13d73d3d98
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7P7OH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=50b5f6d4d9d2d69a7498c44fd8b26e13d73d3d98

--------------------------------

[ Upstream commit 97eea946 ]

The bounds checks in snd_soc_put_volsw_sx() are only being applied to the
first channel, meaning it is possible to write out of bounds values to the
second channel in stereo controls. Add appropriate checks.
Signed-off-by: NMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220511134137.169575-2-broonie@kernel.orgSigned-off-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: Nsanglipeng <sanglipeng1@jd.com>

sound/soc/soc-ops.c

@@ -447,6 +447,12 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 	if (snd_soc_volsw_is_stereo(mc)) {
 		val_mask = mask << rshift;
 		val2 = (ucontrol->value.integer.value[1] + min) & mask;
+
+		if (mc->platform_max && val2 > mc->platform_max)
+			return -EINVAL;
+		if (val2 > max)
+			return -EINVAL;
+
 		val2 = val2 << rshift;
 
 		err = snd_soc_component_update_bits(component, reg2, val_mask,