diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_backlight.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_backlight.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_backlight.c b/drivers/gpu/drm/i915/display/intel_backlight.c index 3f81a726cc7d..7e6ce905bdaf 100644 --- a/drivers/gpu/drm/i915/display/intel_backlight.c +++ b/drivers/gpu/drm/i915/display/intel_backlight.c @@ -10,6 +10,7 @@ #include <acpi/video.h> +#include "i915_drv.h" #include "i915_reg.h" #include "intel_backlight.h" #include "intel_backlight_regs.h" @@ -40,8 +41,9 @@ static u32 scale(u32 source_val, { u64 target_val; - WARN_ON(source_min > source_max); - WARN_ON(target_min > target_max); + if (WARN_ON(source_min >= source_max) || + WARN_ON(target_min > target_max)) + return target_min; /* defensive */ source_val = clamp(source_val, source_min, source_max); |