linux-kernel - [PATCH v2] ASoC: soc-compress: avoid false-positive Wuninitialized warning

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Date:   Fri, 24 Apr 2020 08:54:37 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Vinod Koul <vkoul@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Cc:     Rong Chen <rong.a.chen@...el.com>,
        kbuild test robot <lkp@...el.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Subject: [PATCH v2] ASoC: soc-compress: avoid false-positive Wuninitialized warning

gcc-6.5 and earlier show a new warning:

sound/soc/soc-compress.c: In function ‘soc_compr_open’:
sound/soc/soc-compress.c:75:28: warning: ‘component’ is used uninitialized in this function [-Wuninitialized]
  struct snd_soc_component *component, *save = NULL;
                              ^~~~~~~~~

Simplest fix is to initialize it to avoid the warning.

Reported-by: kbuild test robot <lkp@...el.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Link: https://lore.kernel.org/lkml/202004201540.vYPhhYMs%25lkp@intel.com
Signed-off-by: Rong Chen <rong.a.chen@...el.com>
---
 sound/soc/soc-compress.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index ceaf976db0bb..8431ff72be63 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -72,7 +72,7 @@ static int soc_compr_components_free(struct snd_compr_stream *cstream,
 static int soc_compr_open(struct snd_compr_stream *cstream)
 {
 	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
-	struct snd_soc_component *component, *save = NULL;
+	struct snd_soc_component *component = NULL, *save = NULL;
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	int ret, i;
 
-- 
2.20.1