diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index ea17615789c9..c522e9313c50 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -610,7 +610,7 @@ EXPORT_SYMBOL(ccwgroup_driver_unregister);
 
 static int __ccwgroupdev_check_busid(struct device *dev, const void *id)
 {
-	char *bus_id = id;
+	const char *bus_id = id;
 
 	return (strcmp(bus_id, dev_name(dev)) == 0);
 }
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index f27536ba58eb..113248227137 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1655,9 +1655,7 @@ EXPORT_SYMBOL_GPL(ccw_device_force_console);
 static int
 __ccwdev_check_busid(struct device *dev, const void *id)
 {
-	char *bus_id;
-
-	bus_id = id;
+	const char *bus_id = id;
 
 	return (strcmp(bus_id, dev_name(dev)) == 0);
 }