On Thu, Aug 10, 2023 at 3:47 AM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> There is a branch in if() clause where aw88261_reg_update() could return
> uninitialized value. Pounted out by W=1 clang build:
>
> sound/soc/codecs/aw88261.c:651:7: error: variable 'ret' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
> if (aw_dev->prof_cur != aw_dev->prof_index) {
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> sound/soc/codecs/aw88261.c:660:9: note: uninitialized use occurs here
> return ret;
> ^~~
> sound/soc/codecs/aw88261.c:651:3: note: remove the 'if' if its condition is always true
> if (aw_dev->prof_cur != aw_dev->prof_index) {
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Thanks for the patch!
I see this addressed already in -next:
https://lore.kernel.org/all/20230808125703.1611325-1-arnd@xxxxxxxxxx/
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> ---
> sound/soc/codecs/aw88261.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/codecs/aw88261.c b/sound/soc/codecs/aw88261.c
> index 82923b454dd4..fddba2f2de41 100644
> --- a/sound/soc/codecs/aw88261.c
> +++ b/sound/soc/codecs/aw88261.c
> @@ -636,7 +636,7 @@ static int aw88261_dev_stop(struct aw_device *aw_dev)
> static int aw88261_reg_update(struct aw88261 *aw88261, bool force)
> {
> struct aw_device *aw_dev = aw88261->aw_pa;
> - int ret;
> + int ret = 0;
>
> if (force) {
> ret = regmap_write(aw_dev->regmap,
> --
> 2.34.1
>
--
Thanks,
~Nick Desaulniers
