diff --git a/[refs] b/[refs]
index d1990b550f7e..69de01e73b18 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f43e6a5a72566675da3581dc0d7076042e6701f7
+refs/heads/master: 1ba0ce6f9c19a8573832e14b418dc835dc6f3bbd
diff --git a/trunk/arch/um/drivers/mmapper_kern.c b/trunk/arch/um/drivers/mmapper_kern.c
index 9a3b5daf6250..df3516e47d4d 100644
--- a/trunk/arch/um/drivers/mmapper_kern.c
+++ b/trunk/arch/um/drivers/mmapper_kern.c
@@ -95,7 +95,8 @@ static const struct file_operations mmapper_fops = {
 	.release	= mmapper_release,
 };
 
-static const struct miscdevice mmapper_dev = {
+/* No locking needed - only used (and modified) by below initcall and exitcall. */
+static struct miscdevice mmapper_dev = {
 	.minor		= MISC_DYNAMIC_MINOR,
 	.name		= "mmapper",
 	.fops		= &mmapper_fops