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: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 871607b..8335a10 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -935,6 +935,12 @@
}
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);
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index 0f05e6a..3606d5b 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -699,9 +699,12 @@
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");
diff --git a/include/linux/device.h b/include/linux/device.h
index 313e0b3..3cc13c3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -117,6 +117,8 @@
#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;