diff options
| -rw-r--r-- | src/backlight/backlight.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c index 754a646c3d..c708391612 100644 --- a/src/backlight/backlight.c +++ b/src/backlight/backlight.c @@ -205,14 +205,18 @@ static unsigned get_max_brightness(struct udev_device *device) { max_brightness_str = udev_device_get_sysattr_value(device, "max_brightness"); if (!max_brightness_str) { - log_warning("Failed to read 'max_brightness' attribute"); + log_warning("Failed to read 'max_brightness' attribute."); return 0; } r = safe_atou(max_brightness_str, &max_brightness); if (r < 0) { - log_warning("Failed to parse 'max_brightness' \"%s\": %s", - max_brightness_str, strerror(-r)); + log_warning("Failed to parse 'max_brightness' \"%s\": %s", max_brightness_str, strerror(-r)); + return 0; + } + + if (max_brightness <= 0) { + log_warning("Maximum brightness is 0, ignoring device."); return 0; } |