123 void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor)  in usb_anchor_urb()  argument
127 	spin_lock_irqsave(&anchor->lock, flags);  in usb_anchor_urb()
129 	list_add_tail(&urb->anchor_list, &anchor->urb_list);  in usb_anchor_urb()
130 	urb->anchor = anchor;  in usb_anchor_urb()
132 	if (unlikely(anchor->poisoned))  in usb_anchor_urb()
135 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_anchor_urb()
139 static int usb_anchor_check_wakeup(struct usb_anchor *anchor)  in usb_anchor_check_wakeup()  argument
141 	return atomic_read(&anchor->suspend_wakeups) == 0 &&  in usb_anchor_check_wakeup()
142 		list_empty(&anchor->urb_list);  in usb_anchor_check_wakeup()
146 static void __usb_unanchor_urb(struct urb *urb, struct usb_anchor *anchor)  in __usb_unanchor_urb()  argument
148 	urb->anchor = NULL;  in __usb_unanchor_urb()
151 	if (usb_anchor_check_wakeup(anchor))  in __usb_unanchor_urb()
152 		wake_up(&anchor->wait);  in __usb_unanchor_urb()
164 	struct usb_anchor *anchor;  in usb_unanchor_urb()  local
169 	anchor = urb->anchor;  in usb_unanchor_urb()
170 	if (!anchor)  in usb_unanchor_urb()
173 	spin_lock_irqsave(&anchor->lock, flags);  in usb_unanchor_urb()
179 	if (likely(anchor == urb->anchor))  in usb_unanchor_urb()
180 		__usb_unanchor_urb(urb, anchor);  in usb_unanchor_urb()
181 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_unanchor_urb()
755 void usb_kill_anchored_urbs(struct usb_anchor *anchor)  in usb_kill_anchored_urbs()  argument
759 	spin_lock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
760 	while (!list_empty(&anchor->urb_list)) {  in usb_kill_anchored_urbs()
761 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_kill_anchored_urbs()
765 		spin_unlock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
769 		spin_lock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
771 	spin_unlock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
787 void usb_poison_anchored_urbs(struct usb_anchor *anchor)  in usb_poison_anchored_urbs()  argument
791 	spin_lock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
792 	anchor->poisoned = 1;  in usb_poison_anchored_urbs()
793 	while (!list_empty(&anchor->urb_list)) {  in usb_poison_anchored_urbs()
794 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_poison_anchored_urbs()
798 		spin_unlock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
802 		spin_lock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
804 	spin_unlock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
815 void usb_unpoison_anchored_urbs(struct usb_anchor *anchor)  in usb_unpoison_anchored_urbs()  argument
820 	spin_lock_irqsave(&anchor->lock, flags);  in usb_unpoison_anchored_urbs()
821 	list_for_each_entry(lazarus, &anchor->urb_list, anchor_list) {  in usb_unpoison_anchored_urbs()
824 	anchor->poisoned = 0;  in usb_unpoison_anchored_urbs()
825 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_unpoison_anchored_urbs()
840 void usb_unlink_anchored_urbs(struct usb_anchor *anchor)  in usb_unlink_anchored_urbs()  argument
844 	while ((victim = usb_get_from_anchor(anchor)) != NULL) {  in usb_unlink_anchored_urbs()
859 void usb_anchor_suspend_wakeups(struct usb_anchor *anchor)  in usb_anchor_suspend_wakeups()  argument
861 	if (anchor)  in usb_anchor_suspend_wakeups()
862 		atomic_inc(&anchor->suspend_wakeups);  in usb_anchor_suspend_wakeups()
873 void usb_anchor_resume_wakeups(struct usb_anchor *anchor)  in usb_anchor_resume_wakeups()  argument
875 	if (!anchor)  in usb_anchor_resume_wakeups()
878 	atomic_dec(&anchor->suspend_wakeups);  in usb_anchor_resume_wakeups()
879 	if (usb_anchor_check_wakeup(anchor))  in usb_anchor_resume_wakeups()
880 		wake_up(&anchor->wait);  in usb_anchor_resume_wakeups()
894 int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,  in usb_wait_anchor_empty_timeout()  argument
897 	return wait_event_timeout(anchor->wait,  in usb_wait_anchor_empty_timeout()
898 				  usb_anchor_check_wakeup(anchor),  in usb_wait_anchor_empty_timeout()
913 struct urb *usb_get_from_anchor(struct usb_anchor *anchor)  in usb_get_from_anchor()  argument
918 	spin_lock_irqsave(&anchor->lock, flags);  in usb_get_from_anchor()
919 	if (!list_empty(&anchor->urb_list)) {  in usb_get_from_anchor()
920 		victim = list_entry(anchor->urb_list.next, struct urb,  in usb_get_from_anchor()
923 		__usb_unanchor_urb(victim, anchor);  in usb_get_from_anchor()
927 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_get_from_anchor()
940 void usb_scuttle_anchored_urbs(struct usb_anchor *anchor)  in usb_scuttle_anchored_urbs()  argument
945 	spin_lock_irqsave(&anchor->lock, flags);  in usb_scuttle_anchored_urbs()
946 	while (!list_empty(&anchor->urb_list)) {  in usb_scuttle_anchored_urbs()
947 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_scuttle_anchored_urbs()
949 		__usb_unanchor_urb(victim, anchor);  in usb_scuttle_anchored_urbs()
951 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_scuttle_anchored_urbs()
962 int usb_anchor_empty(struct usb_anchor *anchor)  in usb_anchor_empty()  argument
964 	return list_empty(&anchor->urb_list);  in usb_anchor_empty()