diff options
| -rw-r--r-- | drivers/base/bus.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 0a8d075f3e6c..6768a01e210b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -610,6 +610,17 @@ static inline int add_probe_files(struct bus_type *bus) { return 0; } static inline void remove_probe_files(struct bus_type *bus) {} #endif +static ssize_t driver_uevent_store(struct device_driver *drv, + const char *buf, size_t count) +{ + enum kobject_action action; + + if (kobject_action_type(buf, count, &action) == 0) + kobject_uevent(&drv->kobj, action); + return count; +} +static DRIVER_ATTR(uevent, S_IWUSR, NULL, driver_uevent_store); + /** * bus_add_driver - Add a driver to the bus. * @drv: driver. @@ -640,6 +651,11 @@ int bus_add_driver(struct device_driver *drv) klist_add_tail(&drv->knode_bus, &bus->klist_drivers); module_add_driver(drv->owner, drv); + error = driver_create_file(drv, &driver_attr_uevent); + if (error) { + printk(KERN_ERR "%s: uevent attr (%s) failed\n", + __FUNCTION__, drv->name); + } error = driver_add_attrs(bus, drv); if (error) { /* How the hell do we get out of this pickle? Give up */ @@ -677,6 +693,7 @@ void bus_remove_driver(struct device_driver * drv) remove_bind_files(drv); driver_remove_attrs(drv->bus, drv); + driver_remove_file(drv, &driver_attr_uevent); klist_remove(&drv->knode_bus); pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name); driver_detach(drv); @@ -804,6 +821,17 @@ static void klist_devices_put(struct klist_node *n) put_device(dev); } +static ssize_t bus_uevent_store(struct bus_type *bus, + const char *buf, size_t count) +{ + enum kobject_action action; + + if (kobject_action_type(buf, count, &action) == 0) + kobject_uevent(&bus->subsys.kobj, action); + return count; +} +static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store); + /** * bus_register - register a bus with the system. * @bus: bus. @@ -828,6 +856,10 @@ int bus_register(struct bus_type * bus) if (retval) goto out; + retval = bus_create_file(bus, &bus_attr_uevent); + 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); @@ -863,6 +895,8 @@ bus_probe_files_fail: bus_drivers_fail: kset_unregister(&bus->devices); bus_devices_fail: + bus_remove_file(bus, &bus_attr_uevent); +bus_uevent_fail: subsystem_unregister(&bus->subsys); out: return retval; @@ -882,6 +916,7 @@ void bus_unregister(struct bus_type * bus) remove_probe_files(bus); kset_unregister(&bus->drivers); kset_unregister(&bus->devices); + bus_remove_file(bus, &bus_attr_uevent); subsystem_unregister(&bus->subsys); } |