From 633786736ed53a53b8d0a630cc3ff57381027081 Mon Sep 17 00:00:00 2001 From: Daniel Thompson Date: Wed, 25 Jul 2018 08:38:30 +0100 Subject: [PATCH] backlight: pwm_bl: Fix uninitialized variable Currently, if the DT does not define num-interpolated-steps then num_steps is undefined and the interpolation code will deploy randomly. Fix with a simple initialize to zero. Fixes: 573fe6d1c25c ("backlight: pwm_bl: Linear interpolation between brightness-levels") Reported-by: Marcel Ziswiler Signed-off-by: Daniel Thompson Tested-by: Marcel Ziswiler Reviewed-by: Douglas Anderson Signed-off-by: Lee Jones --- drivers/video/backlight/pwm_bl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 9ee4c1b735b2..bdfcc0a71db1 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -250,7 +250,7 @@ static int pwm_backlight_parse_dt(struct device *dev, struct device_node *node = dev->of_node; unsigned int num_levels = 0; unsigned int levels_count; - unsigned int num_steps; + unsigned int num_steps = 0; struct property *prop; unsigned int *table; int length; -- GitLab