diff --git a/[refs] b/[refs]
index 1b5abd514002..7338b8394a65 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c59bce6262f9511c8e2504231f60609bf7332833
+refs/heads/master: 99b0278f95fc9d55adf65133dc678167a88b632a
diff --git a/trunk/arch/um/drivers/random.c b/trunk/arch/um/drivers/random.c
index 73b2bdd6d2d3..e942e836f995 100644
--- a/trunk/arch/um/drivers/random.c
+++ b/trunk/arch/um/drivers/random.c
@@ -78,6 +78,7 @@ static const struct file_operations rng_chrdev_ops = {
 	.read		= rng_dev_read,
 };
 
+/* rng_init shouldn't be called more than once at boot time */
 static struct miscdevice rng_miscdev = {
 	RNG_MISCDEV_MINOR,
 	RNG_MODULE_NAME,