[PATCH 1/2] ASoC: ops: fix signedness bug in snd_soc_put_volsw()

From: Dan Carpenter
Date: Fri Jan 28 2022 - 06:21:13 EST


The "val" and "val2" variables need to signed for the checking to work
as intended.

Fixes: 817f7c9335ec ("ASoC: ops: Reject out of bounds values in snd_soc_put_volsw()")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
sound/soc/soc-ops.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index dc0e7c8d31f3..0091fa96eb48 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -310,8 +310,9 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
unsigned int invert = mc->invert;
int err;
bool type_2r = false;
- unsigned int val2 = 0;
- unsigned int val, val_mask;
+ unsigned int val_mask;
+ int val2 = 0;
+ int val;

if (sign_bit)
mask = BIT(sign_bit + 1) - 1;
--
2.20.1