device = udev_device_new_from_subsystem_sysname(udev, ss, sysname);
if (!device) {
if (errno != 0)
- log_error("Failed to get backlight or LED device '%s:%s': %m", ss, sysname);
+ log_error_errno(errno, "Failed to get backlight or LED device '%s:%s': %m", ss, sysname);
else
log_oom();
if (streq(argv[1], "load")) {
_cleanup_free_ char *value = NULL;
+ const char *clamp;
if (!shall_restore_state())
return EXIT_SUCCESS;
return EXIT_FAILURE;
}
- clamp_brightness(device, &value, max_brightness);
+ clamp = udev_device_get_property_value(device, "ID_BACKLIGHT_CLAMP");
+ if (!clamp || parse_boolean(clamp) != 0) /* default to clamping */
+ clamp_brightness(device, &value, max_brightness);
r = udev_device_set_sysattr_value(device, "brightness", value);
if (r < 0) {