- if (likely(bd->props && bd->props->set_brightness)) {
- pr_debug("backlight: set brightness to %d\n", brightness);
- bd->props->set_brightness(bd, brightness);
- rc = count;
- } else
- rc = -ENXIO;
+ if (likely(bd->props)) {
+ if (brightness > bd->props->max_brightness)
+ rc = -EINVAL;
+ else {
+ pr_debug("backlight: set brightness to %d\n",
+ brightness);
+ bd->props->brightness = brightness;
+ if (likely(bd->props->update_status))
+ bd->props->update_status(bd);
+ rc = count;
+ }
+ }