Commit 565206aa authored by Ricardo B. Marliere's avatar Ricardo B. Marliere Committed by Michael Ellerman
Browse files

powerpc: vio: make vio_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 vio_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-v2-2-8441b3f77827@marliere.net
parent e15d0127

arch/powerpc/include/asm/vio.h

+1 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ 
 */

#define VIO_CMO_MIN_ENT 1562624



extern struct bus_type vio_bus_type;

extern const struct bus_type vio_bus_type;



struct iommu_table;

arch/powerpc/platforms/pseries/vio.c

+2 −2
Original line number Diff line number Diff line
@@ -1615,7 +1615,7 @@ static struct attribute *vio_cmo_dev_attrs[] = { 
};

ATTRIBUTE_GROUPS(vio_cmo_dev);



struct bus_type vio_bus_type = {

const struct bus_type vio_bus_type = {

	.name = "vio",

	.dev_groups = vio_cmo_dev_groups,

	.bus_groups = vio_bus_groups,
@@ -1634,7 +1634,7 @@ static struct attribute *vio_dev_attrs[] = { 
};

ATTRIBUTE_GROUPS(vio_dev);



struct bus_type vio_bus_type = {

const struct bus_type vio_bus_type = {

	.name = "vio",

	.dev_groups = vio_dev_groups,

	.uevent = vio_hotplug,