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drivers/video/backlight/s6e63m0.c: fix corruption storing gamma mode

strict_strtoul() writes a long but ->gamma_mode only has space to store an
int, so on 64 bit systems we end up scribbling over ->gamma_table_count as
well.  I've changed it to use kstrtouint() instead.

Signed-off-by: Dan Carpenter <>
Acked-by: Inki Dae <>
Signed-off-by: Florian Tobias Schandinat <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
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commit cf2b94daab9f3d21b0a393bef91292622f6a8ca4 1 parent 5eb1eb4
Dan Carpenter authored torvalds committed
Showing with 1 addition and 1 deletion.
  1. +1 −1  drivers/video/backlight/s6e63m0.c
2  drivers/video/backlight/s6e63m0.c
@@ -690,7 +690,7 @@ static ssize_t s6e63m0_sysfs_store_gamma_mode(struct device *dev,
struct backlight_device *bd = NULL;
int brightness, rc;
- rc = strict_strtoul(buf, 0, (unsigned long *)&lcd->gamma_mode);
+ rc = kstrtouint(buf, 0, &lcd->gamma_mode);
if (rc < 0)
return rc;
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