Commit 5fa21d82 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  [PATCH] Driver core: fix locking issues with the devices that are attached to classes
  [PATCH] USB: get USB suspend to work again
parents 8542e589 5d9fd169
......@@ -356,6 +356,13 @@ int device_add(struct device *dev)
if (parent)
klist_add_tail(&dev->knode_parent, &parent->klist_children);
if (dev->class) {
/* tie the class to the device */
down(&dev->class->sem);
list_add_tail(&dev->node, &dev->class->devices);
up(&dev->class->sem);
}
/* notify platform of device entry */
if (platform_notify)
platform_notify(dev);
......@@ -455,6 +462,9 @@ void device_del(struct device * dev)
sysfs_remove_link(&dev->kobj, "device");
sysfs_remove_link(&dev->parent->kobj, class_name);
kfree(class_name);
down(&dev->class->sem);
list_del_init(&dev->node);
up(&dev->class->sem);
}
device_remove_file(dev, &dev->uevent_attr);
......@@ -601,11 +611,6 @@ struct device *device_create(struct class *class, struct device *parent,
if (retval)
goto error;
/* tie the class to the device */
down(&class->sem);
list_add_tail(&dev->node, &class->devices);
up(&class->sem);
return dev;
error:
......@@ -636,9 +641,7 @@ void device_destroy(struct class *class, dev_t devt)
}
up(&class->sem);
if (dev) {
list_del_init(&dev->node);
if (dev)
device_unregister(dev);
}
}
EXPORT_SYMBOL_GPL(device_destroy);
......@@ -991,6 +991,8 @@ void usb_buffer_unmap_sg (struct usb_device *dev, unsigned pipe,
static int verify_suspended(struct device *dev, void *unused)
{
if (dev->driver == NULL)
return 0;
return (dev->power.power_state.event == PM_EVENT_ON) ? -EBUSY : 0;
}
......
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