staging: vc04_services: vchiq_arm: make vchiq_bus_type const

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

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240208-bus_cleanup-staging2-v1-1-cfe906133a2c@marliere.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
index 933027e0011ecf8d72568735b36ed5f2cbccf1f2..68f830d7553108facd16a3c0e33827cc4e83c028 100644 (file)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
@@ -37,7 +37,7 @@ static int vchiq_bus_probe(struct device *dev)
        return driver->probe(device);
 }
 
-struct bus_type vchiq_bus_type = {
+const struct bus_type vchiq_bus_type = {
        .name   = "vchiq-bus",
        .match  = vchiq_bus_type_match,
        .uevent = vchiq_bus_uevent,

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
index caa6fdf25bb1df69fd2a2fb0b1885f12884f9754..4db86e76edbd40a131c370db120a0428fb799536 100644 (file)
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
@@ -34,7 +34,7 @@ static inline struct vchiq_driver *to_vchiq_driver(struct device_driver *d)
        return container_of(d, struct vchiq_driver, driver);
 }
 
-extern struct bus_type vchiq_bus_type;
+extern const struct bus_type vchiq_bus_type;
 
 struct vchiq_device *
 vchiq_device_register(struct device *parent, const char *name);