[PATCH] ASoC: codecs: aw88261: avoid uninitialized variable warning
From: Arnd Bergmann arnd@arndb.de
aw88261_reg_update() returns an unintialized error code in the success path:
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) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Return zero instead here.
Fixes: 028a2ae256916 ("ASoC: codecs: Add aw88261 amplifier driver") Signed-off-by: Arnd Bergmann arnd@arndb.de --- sound/soc/codecs/aw88261.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/aw88261.c b/sound/soc/codecs/aw88261.c index 82923b454dd47..6e2266b713862 100644 --- a/sound/soc/codecs/aw88261.c +++ b/sound/soc/codecs/aw88261.c @@ -652,6 +652,8 @@ static int aw88261_reg_update(struct aw88261 *aw88261, bool force) ret = aw88261_dev_fw_update(aw88261); if (ret) return ret; + } else { + ret = 0; } }
On Tue, Aug 08, 2023 at 02:56:54PM +0200, Arnd Bergmann wrote:
From: Arnd Bergmann arnd@arndb.de
aw88261_reg_update() returns an unintialized error code in the success path:
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) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Return zero instead here.
Fixes: 028a2ae256916 ("ASoC: codecs: Add aw88261 amplifier driver") Signed-off-by: Arnd Bergmann arnd@arndb.de
Alternatively, it seems like the final 'return ret' can just be replaced with 'return 0', as every other assignment of ret returns directly if it is not zero. Regardless:
Reviewed-by: Nathan Chancellor nathan@kernel.org
sound/soc/codecs/aw88261.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/aw88261.c b/sound/soc/codecs/aw88261.c index 82923b454dd47..6e2266b713862 100644 --- a/sound/soc/codecs/aw88261.c +++ b/sound/soc/codecs/aw88261.c @@ -652,6 +652,8 @@ static int aw88261_reg_update(struct aw88261 *aw88261, bool force) ret = aw88261_dev_fw_update(aw88261); if (ret) return ret;
} else {ret = 0;-- 2.39.2
On Tue, 08 Aug 2023 14:56:54 +0200, Arnd Bergmann wrote:
aw88261_reg_update() returns an unintialized error code in the success path:
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) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: codecs: aw88261: avoid uninitialized variable warning commit: 87b56172431bc2e8c497d2f10ee8245313167bd9
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
participants (3)
-
Arnd Bergmann -
Mark Brown -
Nathan Chancellor