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From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To:     Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Heiko Stuebner <heiko@sntech.de>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Tom Rix <trix@redhat.com>, alsa-devel@alsa-project.org,
        linux-kernel@vger.kernel.org, patches@opensource.cirrus.com,
        linux-arm-kernel@lists.infradead.org,
        linux-rockchip@lists.infradead.org, llvm@lists.linux.dev
Cc:     Andi Shyti <andi.shyti@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH 1/4] ASoC: aw88261: Fix unitialized ret of aw88261_reg_update()
Date:   Thu, 10 Aug 2023 12:47:43 +0200
Message-Id: <20230810104749.164827-1-krzysztof.kozlowski@linaro.org>
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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(-)

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