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Driver core: Fix error handling in bus_add_driver().

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- If the allocation of ->priv fails, the reference on the bus
  must be dropped.
- If adding the kobject fails, kobject_put must be called to
  clean things up.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Cornelia Huck 2008-02-18 17:04:25 +01:00 committed by Greg Kroah-Hartman
parent 7199677d2e
commit 0763446429
1 changed files with 5 additions and 4 deletions
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9
drivers/base/bus.c
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@ -658,9 +658,10 @@ int bus_add_driver(struct device_driver *drv)
pr_debug("bus: '%s': add driver %s\n", bus->name, drv->name);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
if (!priv) {
error = -ENOMEM;
goto out_put_bus;
}
klist_init(&priv->klist_devices, NULL, NULL);
priv->driver = drv;
drv->p = priv;
@ -668,7 +669,7 @@ int bus_add_driver(struct device_driver *drv)
error = kobject_init_and_add(&priv->kobj, &driver_ktype, NULL,
"%s", drv->name);
if (error)
goto out_put_bus;
goto out_unregister;
if (drv->bus->p->drivers_autoprobe) {
error = driver_attach(drv);