--- util-linux/volume_id/get_devname.c
+++ util-linux/volume_id/get_devname.c
@@ -99,6 +99,9 @@
 	if (major(statbuf->st_rdev) == 2)
 		return TRUE;
 
+	if (strncmp(device, "/dev/mtd", 8) == 0)
+		return TRUE;
+
 	fd = open(device, O_RDONLY);
 	if (fd < 0)
 		return TRUE;