[PATCH 1/6] s390: ccwgroup: make ccwgroup_bus_type const

["Ricardo B. Marliere" <ricardo@xxxxxxxxxxxx>]

Now that the driver core can properly handle constant struct bus_type,
move the ccwgroup_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>
---
 drivers/s390/cio/ccwgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index aa3292e57e38..6eb8bcd948dc 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -31,7 +31,7 @@
  * to devices that use multiple subchannels.
  */
 
-static struct bus_type ccwgroup_bus_type;
+static const struct bus_type ccwgroup_bus_type;
 
 static void __ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)
 {
@@ -465,7 +465,7 @@ static void ccwgroup_shutdown(struct device *dev)
 		gdrv->shutdown(gdev);
 }
 
-static struct bus_type ccwgroup_bus_type = {
+static const struct bus_type ccwgroup_bus_type = {
 	.name   = "ccwgroup",
 	.dev_groups = ccwgroup_dev_groups,
 	.remove = ccwgroup_remove,

-- 
2.43.0