| Message ID | 20230810104749.164827-1-krzysztof.kozlowski@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] ASoC: aw88261: Fix unitialized ret of aw88261_reg_update() | expand |
On Thu, Aug 10, 2023 at 3:47 AM Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> 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@kernel.org/ > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> > --- > 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 >
On Thu, Aug 10, 2023 at 12:47:43PM +0200, Krzysztof Kozlowski wrote: > There is a branch in if() clause where aw88261_reg_update() could return > uninitialized value. Pounted out by W=1 clang build: This series appears to have two copies of every patch which *look* similar but I'm not 100% sure if that's the case or in general what's going on - could you please resend a clean copy, it's probably easier than figuring it out?
On 15/08/2023 16:10, Mark Brown wrote: > On Thu, Aug 10, 2023 at 12:47:43PM +0200, Krzysztof Kozlowski wrote: >> There is a branch in if() clause where aw88261_reg_update() could return >> uninitialized value. Pounted out by W=1 clang build: > > This series appears to have two copies of every patch which *look* > similar but I'm not 100% sure if that's the case or in general what's > going on - could you please resend a clean copy, it's probably easier > than figuring it out? Sorry for that, I must have screwed something while sending. I'll rebase (first patch seems to be already fixed by Arnd) and send again. Best regards, Krzysztof
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,
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) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- sound/soc/codecs/aw88261.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)