ASoC: ops: Fix wraparound for mask in snd_soc_get_volsw

In snd_soc_info_volsw(), mask is generated by figuring out the index of
the most significant bit set in max and converting the index to a
bitmask through bit shift 1. Unintended wraparound occurs when max is an
integer value with msb bit set. Since the bit shift value 1 is treated
as an integer type, the left shift operation will wraparound and set
mask to 0 instead of all 1's. In order to fix this, we type cast 1 as
`1ULL` to prevent the wraparound.

Fixes: 7077148 ("ASoC: core: Split ops out of soc-core.c")
Signed-off-by: Stephen Lee <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Stephen Lee

sound/soc/soc-ops.c

@@ -263,7 +263,7 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 	int max = mc->max;
 	int min = mc->min;
 	int sign_bit = mc->sign_bit;
-	unsigned int mask = (1 << fls(max)) - 1;
+	unsigned int mask = (1ULL << fls(max)) - 1;
 	unsigned int invert = mc->invert;
 	int val;
 	int ret;