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Message-Id: <20210710021748.3167666-68-sashal@kernel.org>
Date: Fri, 9 Jul 2021 22:17:02 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
Sasha Levin <sashal@...nel.org>, alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 5.13 068/114] ALSA: control_led - fix initialization in the mode show callback
From: Jaroslav Kysela <perex@...ex.cz>
[ Upstream commit e381a14c3e3a4e90e293d4eaa5a3ab8ae98b9973 ]
The str variable should be always initialized before use even if
the switch covers all cases. This is a minimalistic fix: Assign NULL,
the sprintf() may print '(null)' if something is corrupted.
Signed-off-by: Jaroslav Kysela <perex@...ex.cz>
Link: https://lore.kernel.org/r/20210614071710.1786866-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/core/control_led.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/core/control_led.c b/sound/core/control_led.c
index a90e31dbde61..ff7fd5e29551 100644
--- a/sound/core/control_led.c
+++ b/sound/core/control_led.c
@@ -397,7 +397,7 @@ static ssize_t show_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_ctl_led *led = container_of(dev, struct snd_ctl_led, dev);
- const char *str;
+ const char *str = NULL;
switch (led->mode) {
case MODE_FOLLOW_MUTE: str = "follow-mute"; break;
--
2.30.2
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