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powerpc: mpic: make mpic_subsys const

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 mpic_subsys 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-v2-3-8441b3f77827@marliere.net
This commit is contained in:
Ricardo B. Marliere 2024-02-12 17:05:01 -03:00 committed by Michael Ellerman
parent 565206aaa6
commit 8e3d0b8d99
2 changed files with 2 additions and 2 deletions
arch/powerpc
include/asm
sysdev

View File

@ -336,7 +336,7 @@ struct mpic
#endif
};
extern struct bus_type mpic_subsys;
extern const struct bus_type mpic_subsys;
/*
* MPIC flags (passed to mpic_alloc)

View File

@ -49,7 +49,7 @@
#define DBG(fmt...)
#endif
struct bus_type mpic_subsys = {
const struct bus_type mpic_subsys = {
.name = "mpic",
.dev_name = "mpic",
};