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xen: pcpu: make xen_pcpu_subsys const

Now that the driver core can properly handle constant struct bus_type,
move the xen_pcpu_subsys 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>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240203-bus_cleanup-xen-v1-1-c2f5fe89ed95@marliere.net
Signed-off-by: Juergen Gross <jgross@suse.com>

authored by

Ricardo B. Marliere and committed by
Juergen Gross 2528dcbe b2c52b8c

+1 -1
+1 -1
drivers/xen/pcpu.c
··· 65 65 uint32_t flags; 66 66 }; 67 67 68 - static struct bus_type xen_pcpu_subsys = { 68 + static const struct bus_type xen_pcpu_subsys = { 69 69 .name = "xen_cpu", 70 70 .dev_name = "xen_cpu", 71 71 };