126 void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor)  in usb_anchor_urb()  argument
130 	spin_lock_irqsave(&anchor->lock, flags);  in usb_anchor_urb()
132 	list_add_tail(&urb->anchor_list, &anchor->urb_list);  in usb_anchor_urb()
133 	urb->anchor = anchor;  in usb_anchor_urb()
135 	if (unlikely(anchor->poisoned))  in usb_anchor_urb()
138 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_anchor_urb()
142 static int usb_anchor_check_wakeup(struct usb_anchor *anchor)  in usb_anchor_check_wakeup()  argument
144 	return atomic_read(&anchor->suspend_wakeups) == 0 &&  in usb_anchor_check_wakeup()
145 		list_empty(&anchor->urb_list);  in usb_anchor_check_wakeup()
149 static void __usb_unanchor_urb(struct urb *urb, struct usb_anchor *anchor)  in __usb_unanchor_urb()  argument
151 	urb->anchor = NULL;  in __usb_unanchor_urb()
154 	if (usb_anchor_check_wakeup(anchor))  in __usb_unanchor_urb()
155 		wake_up(&anchor->wait);  in __usb_unanchor_urb()
167 	struct usb_anchor *anchor;  in usb_unanchor_urb()  local
172 	anchor = urb->anchor;  in usb_unanchor_urb()
173 	if (!anchor)  in usb_unanchor_urb()
176 	spin_lock_irqsave(&anchor->lock, flags);  in usb_unanchor_urb()
182 	if (likely(anchor == urb->anchor))  in usb_unanchor_urb()
183 		__usb_unanchor_urb(urb, anchor);  in usb_unanchor_urb()
184 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_unanchor_urb()
784 void usb_kill_anchored_urbs(struct usb_anchor *anchor)  in usb_kill_anchored_urbs()  argument
788 	spin_lock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
789 	while (!list_empty(&anchor->urb_list)) {  in usb_kill_anchored_urbs()
790 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_kill_anchored_urbs()
794 		spin_unlock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
798 		spin_lock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
800 	spin_unlock_irq(&anchor->lock);  in usb_kill_anchored_urbs()
816 void usb_poison_anchored_urbs(struct usb_anchor *anchor)  in usb_poison_anchored_urbs()  argument
820 	spin_lock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
821 	anchor->poisoned = 1;  in usb_poison_anchored_urbs()
822 	while (!list_empty(&anchor->urb_list)) {  in usb_poison_anchored_urbs()
823 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_poison_anchored_urbs()
827 		spin_unlock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
831 		spin_lock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
833 	spin_unlock_irq(&anchor->lock);  in usb_poison_anchored_urbs()
844 void usb_unpoison_anchored_urbs(struct usb_anchor *anchor)  in usb_unpoison_anchored_urbs()  argument
849 	spin_lock_irqsave(&anchor->lock, flags);  in usb_unpoison_anchored_urbs()
850 	list_for_each_entry(lazarus, &anchor->urb_list, anchor_list) {  in usb_unpoison_anchored_urbs()
853 	anchor->poisoned = 0;  in usb_unpoison_anchored_urbs()
854 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_unpoison_anchored_urbs()
869 void usb_unlink_anchored_urbs(struct usb_anchor *anchor)  in usb_unlink_anchored_urbs()  argument
873 	while ((victim = usb_get_from_anchor(anchor)) != NULL) {  in usb_unlink_anchored_urbs()
888 void usb_anchor_suspend_wakeups(struct usb_anchor *anchor)  in usb_anchor_suspend_wakeups()  argument
890 	if (anchor)  in usb_anchor_suspend_wakeups()
891 		atomic_inc(&anchor->suspend_wakeups);  in usb_anchor_suspend_wakeups()
902 void usb_anchor_resume_wakeups(struct usb_anchor *anchor)  in usb_anchor_resume_wakeups()  argument
904 	if (!anchor)  in usb_anchor_resume_wakeups()
907 	atomic_dec(&anchor->suspend_wakeups);  in usb_anchor_resume_wakeups()
908 	if (usb_anchor_check_wakeup(anchor))  in usb_anchor_resume_wakeups()
909 		wake_up(&anchor->wait);  in usb_anchor_resume_wakeups()
923 int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,  in usb_wait_anchor_empty_timeout()  argument
926 	return wait_event_timeout(anchor->wait,  in usb_wait_anchor_empty_timeout()
927 				  usb_anchor_check_wakeup(anchor),  in usb_wait_anchor_empty_timeout()
942 struct urb *usb_get_from_anchor(struct usb_anchor *anchor)  in usb_get_from_anchor()  argument
947 	spin_lock_irqsave(&anchor->lock, flags);  in usb_get_from_anchor()
948 	if (!list_empty(&anchor->urb_list)) {  in usb_get_from_anchor()
949 		victim = list_entry(anchor->urb_list.next, struct urb,  in usb_get_from_anchor()
952 		__usb_unanchor_urb(victim, anchor);  in usb_get_from_anchor()
956 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_get_from_anchor()
969 void usb_scuttle_anchored_urbs(struct usb_anchor *anchor)  in usb_scuttle_anchored_urbs()  argument
974 	spin_lock_irqsave(&anchor->lock, flags);  in usb_scuttle_anchored_urbs()
975 	while (!list_empty(&anchor->urb_list)) {  in usb_scuttle_anchored_urbs()
976 		victim = list_entry(anchor->urb_list.prev, struct urb,  in usb_scuttle_anchored_urbs()
978 		__usb_unanchor_urb(victim, anchor);  in usb_scuttle_anchored_urbs()
980 	spin_unlock_irqrestore(&anchor->lock, flags);  in usb_scuttle_anchored_urbs()
991 int usb_anchor_empty(struct usb_anchor *anchor)  in usb_anchor_empty()  argument
993 	return list_empty(&anchor->urb_list);  in usb_anchor_empty()