X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fbacklight%2Fbacklight.c;h=c79ad6520c9f8668f0992c51d7506790f23e8726;hb=b9be39bfb4ed8e43a7c445831131e44be998eb32;hp=1271a66983392c8dc1a692eb0b6f83f4f47c46f9;hpb=56f64d95763a799ba4475daf44d8e9f72a1bd474;p=elogind.git

diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c
index 1271a6698..c79ad6520 100644
--- a/src/backlight/backlight.c
+++ b/src/backlight/backlight.c
@@ -373,6 +373,7 @@ int main(int argc, char *argv[]) {
 
         if (streq(argv[1], "load")) {
                 _cleanup_free_ char *value = NULL;
+                const char *clamp;
 
                 if (!shall_restore_state())
                         return EXIT_SUCCESS;
@@ -390,7 +391,9 @@ int main(int argc, char *argv[]) {
                         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) {