s390/cio: make scm_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the scm_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@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240203-bus_cleanup-s390-v1-4-ac891afc7282@marliere.net
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c
index a734b323e0631e288893f89613883ad7a2a1d54f..c7894d61306d741350b75384e12541accf112186 100644 (file)
--- a/drivers/s390/cio/scm.c
+++ b/drivers/s390/cio/scm.c
@@ -42,7 +42,7 @@ static int scmdev_uevent(const struct device *dev, struct kobj_uevent_env *env)
        return add_uevent_var(env, "MODALIAS=scm:scmdev");
 }
 
-static struct bus_type scm_bus_type = {
+static const struct bus_type scm_bus_type = {
        .name  = "scm",
        .probe = scmdev_probe,
        .remove = scmdev_remove,