X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fbacklight%2Fbacklight.c;h=1ef0b45cc689a26e824daa84afde24d93c121ee8;hp=3378907f91a4889342c1a1d458bdd41ecc0f3c10;hb=875c6e1b48f37a07dfbb80d6653c73f205e94260;hpb=3731acf1acfb4a6eb68374a5b137f3b368f63381;ds=sidebyside

diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c
index 3378907f9..1ef0b45cc 100644
--- a/src/backlight/backlight.c
+++ b/src/backlight/backlight.c
@@ -54,9 +54,15 @@ int main(int argc, char *argv[]) {
                 goto finish;
         }
 
-        device = udev_device_new_from_syspath(udev, argv[2]);
+        errno = 0;
+        device = udev_device_new_from_subsystem_sysname(udev, "backlight", argv[2]);
         if (!device) {
-                r = log_oom();
+                if (errno != 0) {
+                        log_error("Failed to get backlight device: %m");
+                        r = -errno;
+                } else
+                        r = log_oom();
+
                 goto finish;
         }