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Commit 0fed80f7 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

driver core: add way to get to bus kset 



This allows an easier way to get to the kset associated with a struct
bus_type (you have three to choose from...)  This will make it easier to
move these fields to be dynamic in a future patch.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent cc972e89

drivers/base/bus.c

+6 −0
Original line number Diff line number Diff line
@@ -935,6 +935,12 @@ int bus_unregister_notifier(struct bus_type *bus, struct notifier_block *nb) 
}

EXPORT_SYMBOL_GPL(bus_unregister_notifier);



struct kset *bus_get_kset(struct bus_type *bus)

{

	return &bus->subsys;

}

EXPORT_SYMBOL_GPL(bus_get_kset);



int __init buses_init(void)

{

	bus_kset = kset_create_and_add("bus", &bus_uevent_ops, NULL);

drivers/pci/hotplug/pci_hotplug_core.c

+4 −1
Original line number Diff line number Diff line
@@ -699,9 +699,12 @@ int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot, 
static int __init pci_hotplug_init (void)

{

	int result;

	struct kset *pci_bus_kset;



	pci_bus_kset = bus_get_kset(&pci_bus_type);



	pci_hotplug_slots_kset = kset_create_and_add("slots", NULL,

						     &pci_bus_type.subsys.kobj);

						     &pci_bus_kset->kobj);

	if (!pci_hotplug_slots_kset) {

		result = -ENOMEM;

		err("Register subsys error\n");

include/linux/device.h

+2 −0
Original line number Diff line number Diff line
@@ -117,6 +117,8 @@ extern int bus_unregister_notifier(struct bus_type *bus, 
#define BUS_NOTIFY_UNBIND_DRIVER	0x00000004 /* driver about to be

						      unbound */



extern struct kset *bus_get_kset(struct bus_type *bus);



struct device_driver {

	const char		* name;

	struct bus_type		* bus;