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authorGreg Kroah-Hartman <gregkh@suse.de>2007-11-01 13:31:26 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:16 -0800
commit6dcec2511ff55b4abaca7ad3433011a7c04c2430 (patch)
treeaeb9c18a877987478a1594d42b8f041ebb388875
parent3d8995963dfec66ef6270e729bf75903e9043f9d (diff)
downloadlinux-2.6.34-ux500-6dcec2511ff55b4abaca7ad3433011a7c04c2430.tar.gz
kset: convert struct bus_device->drivers to use kset_create
Dynamically create the kset instead of declaring it statically. Having 3 static kobjects in one structure is not only foolish, but ripe for nasty race conditions if handled improperly. We also rename the field to catch any potential users of it (not that there should be outside of the driver core...) Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/base/bus.c15
-rw-r--r--drivers/base/driver.c2
-rw-r--r--include/linux/device.h2
3 files changed, 10 insertions, 9 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index b23eeb2d4ea..6796d3e4605 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -638,7 +638,7 @@ int bus_add_driver(struct device_driver *drv)
error = kobject_set_name(&drv->kobj, "%s", drv->name);
if (error)
goto out_put_bus;
- drv->kobj.kset = &bus->drivers;
+ drv->kobj.kset = bus->drivers_kset;
drv->kobj.ktype = &driver_ktype;
error = kobject_register(&drv->kobj);
if (error)
@@ -869,11 +869,12 @@ int bus_register(struct bus_type * bus)
goto bus_devices_fail;
}
- kobject_set_name(&bus->drivers.kobj, "drivers");
- bus->drivers.kobj.parent = &bus->subsys.kobj;
- retval = kset_register(&bus->drivers);
- if (retval)
+ bus->drivers_kset = kset_create_and_add("drivers", NULL,
+ &bus->subsys.kobj);
+ if (!bus->drivers_kset) {
+ retval = -ENOMEM;
goto bus_drivers_fail;
+ }
klist_init(&bus->klist_devices, klist_devices_get, klist_devices_put);
klist_init(&bus->klist_drivers, NULL, NULL);
@@ -893,7 +894,7 @@ int bus_register(struct bus_type * bus)
bus_attrs_fail:
remove_probe_files(bus);
bus_probe_files_fail:
- kset_unregister(&bus->drivers);
+ kset_unregister(bus->drivers_kset);
bus_drivers_fail:
kset_unregister(bus->devices_kset);
bus_devices_fail:
@@ -916,7 +917,7 @@ void bus_unregister(struct bus_type * bus)
pr_debug("bus %s: unregistering\n", bus->name);
bus_remove_attrs(bus);
remove_probe_files(bus);
- kset_unregister(&bus->drivers);
+ kset_unregister(bus->drivers_kset);
kset_unregister(bus->devices_kset);
bus_remove_file(bus, &bus_attr_uevent);
subsystem_unregister(&bus->subsys);
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index eb11475293e..1c9770dfb80 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -185,7 +185,7 @@ void driver_unregister(struct device_driver * drv)
*/
struct device_driver *driver_find(const char *name, struct bus_type *bus)
{
- struct kobject *k = kset_find_obj(&bus->drivers, name);
+ struct kobject *k = kset_find_obj(bus->drivers_kset, name);
if (k)
return to_drv(k);
return NULL;
diff --git a/include/linux/device.h b/include/linux/device.h
index 82c27777137..110ace0dec3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -54,7 +54,7 @@ struct bus_type {
struct module * owner;
struct kset subsys;
- struct kset drivers;
+ struct kset *drivers_kset;
struct kset *devices_kset;
struct klist klist_devices;
struct klist klist_drivers;