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Subject[PATCH 138/196] driver core: add way to get to bus kset
Date
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>
---
drivers/base/bus.c | 6 ++++++
drivers/pci/hotplug/pci_hotplug_core.c | 5 ++++-
include/linux/device.h | 2 ++
3 files changed, 12 insertions(+), 1 deletions(-)

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 @@ 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);
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 @@ 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");
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 @@ 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;
--
1.5.3.8


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