ASoC: change mask in snd_soc_get/put_volsw_sx to unsigned int
If the result of (min + max) is negative in functions
snd_soc_get_volsw_sx() or snd_soc_put_volsw_sx(), there
will be an overflow for the variable 'mask'.
UBSAN: Undefined behaviour in sound/soc/soc-ops.c:382:6
signed integer overflow:
-2147483648 - 1 cannot be represented in type 'int'
Fix this by updating the variable type of 'mask' to unsigned int.
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index 500f98c..7144a51 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -378,7 +378,7 @@ int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
unsigned int rshift = mc->rshift;
int max = mc->max;
int min = mc->min;
- int mask = (1 << (fls(min + max) - 1)) - 1;
+ unsigned int mask = (1 << (fls(min + max) - 1)) - 1;
unsigned int val;
int ret;
@@ -423,7 +423,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
unsigned int rshift = mc->rshift;
int max = mc->max;
int min = mc->min;
- int mask = (1 << (fls(min + max) - 1)) - 1;
+ unsigned int mask = (1 << (fls(min + max) - 1)) - 1;
int err = 0;
unsigned int val, val_mask, val2 = 0;