From: Jaroslav Kysela perex@perex.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@perex.cz Link: https://lore.kernel.org/r/20210614071710.1786866-1-perex@perex.cz Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.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;