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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
commit3d8995963dfec66ef6270e729bf75903e9043f9d (patch)
tree3abf600f400fb1bbc26f0be4f43af6cb22d24ce4
parent039a5dcd2fc45188a2d522df630db4f7ef903a0f (diff)
kset: convert struct bus_device->devices 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.c19
-rw-r--r--include/linux/device.h2
2 files changed, 11 insertions, 10 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index e3b10107780..b23eeb2d4ea 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -449,7 +449,7 @@ int bus_add_device(struct device * dev)
error = device_add_attrs(bus, dev);
if (error)
goto out_put;
- error = sysfs_create_link(&bus->devices.kobj,
+ error = sysfs_create_link(&bus->devices_kset->kobj,
&dev->kobj, dev->bus_id);
if (error)
goto out_id;
@@ -466,7 +466,7 @@ int bus_add_device(struct device * dev)
out_deprecated:
sysfs_remove_link(&dev->kobj, "subsystem");
out_subsys:
- sysfs_remove_link(&bus->devices.kobj, dev->bus_id);
+ sysfs_remove_link(&bus->devices_kset->kobj, dev->bus_id);
out_id:
device_remove_attrs(bus, dev);
out_put:
@@ -512,7 +512,7 @@ void bus_remove_device(struct device * dev)
if (dev->bus) {
sysfs_remove_link(&dev->kobj, "subsystem");
remove_deprecated_bus_links(dev);
- sysfs_remove_link(&dev->bus->devices.kobj, dev->bus_id);
+ sysfs_remove_link(&dev->bus->devices_kset->kobj, dev->bus_id);
device_remove_attrs(dev->bus, dev);
if (dev->is_registered) {
dev->is_registered = 0;
@@ -862,11 +862,12 @@ int bus_register(struct bus_type * bus)
if (retval)
goto bus_uevent_fail;
- kobject_set_name(&bus->devices.kobj, "devices");
- bus->devices.kobj.parent = &bus->subsys.kobj;
- retval = kset_register(&bus->devices);
- if (retval)
+ bus->devices_kset = kset_create_and_add("devices", NULL,
+ &bus->subsys.kobj);
+ if (!bus->devices_kset) {
+ retval = -ENOMEM;
goto bus_devices_fail;
+ }
kobject_set_name(&bus->drivers.kobj, "drivers");
bus->drivers.kobj.parent = &bus->subsys.kobj;
@@ -894,7 +895,7 @@ bus_attrs_fail:
bus_probe_files_fail:
kset_unregister(&bus->drivers);
bus_drivers_fail:
- kset_unregister(&bus->devices);
+ kset_unregister(bus->devices_kset);
bus_devices_fail:
bus_remove_file(bus, &bus_attr_uevent);
bus_uevent_fail:
@@ -916,7 +917,7 @@ void bus_unregister(struct bus_type * bus)
bus_remove_attrs(bus);
remove_probe_files(bus);
kset_unregister(&bus->drivers);
- kset_unregister(&bus->devices);
+ kset_unregister(bus->devices_kset);
bus_remove_file(bus, &bus_attr_uevent);
subsystem_unregister(&bus->subsys);
}
diff --git a/include/linux/device.h b/include/linux/device.h
index dbbbe89e726..82c27777137 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -55,7 +55,7 @@ struct bus_type {
struct kset subsys;
struct kset drivers;
- struct kset devices;
+ struct kset *devices_kset;
struct klist klist_devices;
struct klist klist_drivers;