Commit 14ce0dbb authored by Ricardo B. Marliere's avatar Ricardo B. Marliere Committed by Michael Ellerman
Browse files

powerpc: ibmebus: make ibmebus_bus_type const 



Since commit d492cc25 ("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.

Suggested-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatar"Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-5-8441b3f77827@marliere.net
parent 112202f3

arch/powerpc/include/asm/ibmebus.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

arch/powerpc/platforms/pseries/ibmebus.c

+2 −2
Original line number Diff line number Diff line
@@ -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,