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: 7077148fb5
("ASoC: core: Split ops out of soc-core.c")
Signed-off-by: Stephen Lee <slee08177@gmail.com>
Link: https://msgid.link/r/20240326010131.6211-1-slee08177@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -263,7 +263,7 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
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int max = mc->max;
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int max = mc->max;
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int min = mc->min;
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int min = mc->min;
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int sign_bit = mc->sign_bit;
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int sign_bit = mc->sign_bit;
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unsigned int mask = (1 << fls(max)) - 1;
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unsigned int mask = (1ULL << fls(max)) - 1;
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unsigned int invert = mc->invert;
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unsigned int invert = mc->invert;
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int val;
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int val;
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int ret;
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int ret;
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