diff mbox series

[v2,5/5] powerpc: ibmebus: make ibmebus_bus_type const

Message ID 20240212-bus_cleanup-powerpc2-v2-5-8441b3f77827@marliere.net
State New
Headers
Series powerpc: struct bus_type cleanup |

Commit Message

Ricardo B. Marliere Feb. 12, 2024, 8:05 p.m. UTC 
  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 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 <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 arch/powerpc/include/asm/ibmebus.h       | 2 +-
 arch/powerpc/platforms/pseries/ibmebus.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

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..b401282727a4 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -55,7 +55,7 @@  static struct device ibmebus_bus_device = { /* fake "parent" device */
 	.init_name = "ibmebus",
 };
 
-struct bus_type ibmebus_bus_type;
+const struct bus_type ibmebus_bus_type;
 
 /* These devices will automatically be added to the bus during init */
 static const struct of_device_id ibmebus_matches[] __initconst = {
@@ -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,