diff options
| author | Mark Brown <broonie@kernel.org> | 2022-04-23 14:12:39 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-18 10:23:45 +0200 |
| commit | 03ebc6fd5c9ddbd5b8c3a3c2b704f506b5277c85 (patch) | |
| tree | 906f75dd520f323f9a6e18a347bae7fd44b1eeb9 /sound | |
| parent | 31606a73baa35acdae6ab95ff5d3928e2d8b4cb0 (diff) | |
ASoC: ops: Validate input values in snd_soc_put_volsw_range()
[ Upstream commit aa22125c57f9e577f0a667e4fa07fc3fa8ca1e60 ]
Check that values written via snd_soc_put_volsw_range() are
within the range advertised by the control, ensuring that we
don't write out of spec values to the hardware.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220423131239.3375261-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-ops.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index 2bc9fa6a34b8..15bfcdbdfaa4 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -510,7 +510,15 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, unsigned int mask = (1 << fls(max)) - 1; unsigned int invert = mc->invert; unsigned int val, val_mask; - int err, ret; + int err, ret, tmp; + + tmp = ucontrol->value.integer.value[0]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min + 1) + return -EINVAL; if (invert) val = (max - ucontrol->value.integer.value[0]) & mask; @@ -525,6 +533,14 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol, ret = err; if (snd_soc_volsw_is_stereo(mc)) { + tmp = ucontrol->value.integer.value[1]; + if (tmp < 0) + return -EINVAL; + if (mc->platform_max && tmp > mc->platform_max) + return -EINVAL; + if (tmp > mc->max - mc->min + 1) + return -EINVAL; + if (invert) val = (max - ucontrol->value.integer.value[1]) & mask; else |