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powerpc: ibmebus: make ibmebus_bus_type const

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Since commit d492cc2573 ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-5-8441b3f77827@marliere.net
This commit is contained in:
Ricardo B. Marliere 2024-02-12 17:05:03 -03:00 committed by Michael Ellerman
parent 112202f34e
commit 14ce0dbb56
2 changed files with 3 additions and 3 deletions
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2
arch/powerpc/include/asm/ibmebus.h
View File

@ -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);

4
arch/powerpc/platforms/pseries/ibmebus.c
View File

@ -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,