[PATCH 4/4] powerpc: ibmebus: make ibmebus_bus_type const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the ibmebus_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 <gre...@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <rica...@marliere.net>
---
 arch/powerpc/include/asm/ibmebus.h       | 2 +-
 arch/powerpc/platforms/pseries/ibmebus.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/ibmebus.h 
b/arch/powerpc/include/asm/ibmebus.h
index 6f33253a364a..46fe406f461c 100644
--- a/arch/powerpc/include/asm/ibmebus.h
+++ b/arch/powerpc/include/asm/ibmebus.h
@@ -48,7 +48,7 @@
 
 struct platform_driver;
 
-extern struct bus_type ibmebus_bus_type;
+extern const struct bus_type ibmebus_bus_type;
 
 int ibmebus_register_driver(struct platform_driver *drv);
 void ibmebus_unregister_driver(struct platform_driver *drv);
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c 
b/arch/powerpc/platforms/pseries/ibmebus.c
index 998e3aff2457..4bb611afaba4 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -432,7 +432,7 @@ static int ibmebus_bus_modalias(const struct device *dev, 
struct kobj_uevent_env
        return of_device_uevent_modalias(dev, env);
 }
 
-struct bus_type ibmebus_bus_type = {
+const struct bus_type ibmebus_bus_type = {
        .name      = "ibmebus",
        .uevent    = ibmebus_bus_modalias,
        .bus_groups = ibmbus_bus_groups,

-- 
2.43.0