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nubus: Make nubus_bus_type static and constant

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Now that the driver core can properly handle constant struct bus_type,
move the nubus_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

It's also never used outside of drivers/nubus/bus.c so make it static
and don't export it as no one is using it.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/2023121940-enlarged-editor-c9a8@gregkh
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Greg Kroah-Hartman 2023-12-19 16:47:41 +01:00 committed by Geert Uytterhoeven
parent b85ea95d08
commit a15f2d48c6
2 changed files with 1 additions and 4 deletions
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3
drivers/nubus/bus.c
View File

@ -32,12 +32,11 @@ static void nubus_device_remove(struct device *dev)
ndrv->remove(to_nubus_board(dev));
}
struct bus_type nubus_bus_type = {
static const struct bus_type nubus_bus_type = {
.name = "nubus",
.probe = nubus_device_probe,
.remove = nubus_device_remove,
};
EXPORT_SYMBOL(nubus_bus_type);
int nubus_driver_register(struct nubus_driver *ndrv)
{

2
include/linux/nubus.h
View File

@ -89,8 +89,6 @@ struct nubus_driver {
void (*remove)(struct nubus_board *board);
};
extern struct bus_type nubus_bus_type;
/* Generic NuBus interface functions, modelled after the PCI interface */
#ifdef CONFIG_PROC_FS
extern bool nubus_populate_procfs;