scsi: core: Make scsi_bus_type const

Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a
const *"), the driver core can properly handle constant struct bus_type,
move the scsi_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>
Link: https://lore.kernel.org/r/20240212-bus_cleanup-scsi2-v2-1-65004493ff09@marliere.net
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 3f0dfb9..92e966a 100644 (file)
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -156,7 +156,7 @@ extern void scsi_sysfs_device_initialize(struct scsi_device *);
 extern struct scsi_transport_template blank_transport_template;
 extern void __scsi_remove_device(struct scsi_device *);
 
-extern struct bus_type scsi_bus_type;
+extern const struct bus_type scsi_bus_type;
 extern const struct attribute_group *scsi_shost_groups[];
 
 /* scsi_netlink.c */

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 24f6eef..14d0be0 100644 (file)
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -549,7 +549,7 @@ static int scsi_bus_uevent(const struct device *dev, struct kobj_uevent_env *env
        return 0;
 }
 
-struct bus_type scsi_bus_type = {
+const struct bus_type scsi_bus_type = {
         .name          = "scsi",
         .match         = scsi_bus_match,
        .uevent         = scsi_bus_uevent,