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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>
hifive-unleashed-5.1
Greg Kroah-Hartman 2008-03-13 17:07:03 -04:00
parent 9a3df1f7de
commit 3f62e5700b
2 changed files with 3 additions and 9 deletions
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9
drivers/base/bus.c
View File

@ -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);

3
include/linux/device.h
View File

@ -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);