Driver core: make device_is_registered() work for class devices

device_is_registered() can use the kobject value for this, so it will
now work with devices that are associated with only a class, not a bus
and a driver.

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 2d207ad..450942a 100644 (file)
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -505,14 +505,11 @@ void bus_attach_device(struct device *dev)
        int ret = 0;
 
        if (bus) {
-               dev->is_registered = 1;
                if (bus->p->drivers_autoprobe)
                        ret = device_attach(dev);
                WARN_ON(ret < 0);
                if (ret >= 0)
                        klist_add_tail(&dev->knode_bus, &bus->p->klist_devices);
-               else
-                       dev->is_registered = 0;
        }
 }
 
@@ -533,10 +530,8 @@ void bus_remove_device(struct device *dev)
                sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
                                  dev->bus_id);
                device_remove_attrs(dev->bus, dev);
-               if (dev->is_registered) {
-                       dev->is_registered = 0;
-                       klist_del(&dev->knode_bus);
-               }
+               klist_del(&dev->knode_bus);
+
                pr_debug("bus: '%s': remove device %s\n",
                         dev->bus->name, dev->bus_id);
                device_release_driver(dev);

diff --git a/include/linux/device.h b/include/linux/device.h
index d7a1ae0..441461f 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -429,7 +429,6 @@ struct device {
        struct kobject kobj;
        char    bus_id[BUS_ID_SIZE];    /* position on parent bus */
        struct device_type      *type;
-       unsigned                is_registered:1;
        unsigned                uevent_suppress:1;
 
        struct semaphore        sem;    /* semaphore to synchronize calls to
@@ -509,7 +508,7 @@ static inline void dev_set_drvdata(struct device *dev, void *data)
 
 static inline int device_is_registered(struct device *dev)
 {
-       return dev->is_registered;
+       return dev->kobj.state_in_sysfs;
 }
 
 void driver_init(void);