25 static int event_handler(struct usbip_device *ud)  in event_handler()  argument
32 	while (usbip_event_happened(ud)) {  in event_handler()
33 		usbip_dbg_eh("pending event %lx\n", ud->event);  in event_handler()
39 		if (ud->event & USBIP_EH_SHUTDOWN) {  in event_handler()
40 			ud->eh_ops.shutdown(ud);  in event_handler()
41 			ud->event &= ~USBIP_EH_SHUTDOWN;  in event_handler()
45 		if (ud->event & USBIP_EH_RESET) {  in event_handler()
46 			ud->eh_ops.reset(ud);  in event_handler()
47 			ud->event &= ~USBIP_EH_RESET;  in event_handler()
51 		if (ud->event & USBIP_EH_UNUSABLE) {  in event_handler()
52 			ud->eh_ops.unusable(ud);  in event_handler()
53 			ud->event &= ~USBIP_EH_UNUSABLE;  in event_handler()
57 		if (ud->event & USBIP_EH_BYE)  in event_handler()
66 	struct usbip_device *ud = data;  in event_handler_loop()  local
69 		wait_event_interruptible(ud->eh_waitq,  in event_handler_loop()
70 					 usbip_event_happened(ud) ||  in event_handler_loop()
74 		if (event_handler(ud) < 0)  in event_handler_loop()
81 int usbip_start_eh(struct usbip_device *ud)  in usbip_start_eh()  argument
83 	init_waitqueue_head(&ud->eh_waitq);  in usbip_start_eh()
84 	ud->event = 0;  in usbip_start_eh()
86 	ud->eh = kthread_run(event_handler_loop, ud, "usbip_eh");  in usbip_start_eh()
87 	if (IS_ERR(ud->eh)) {  in usbip_start_eh()
89 		return PTR_ERR(ud->eh);  in usbip_start_eh()
96 void usbip_stop_eh(struct usbip_device *ud)  in usbip_stop_eh()  argument
98 	if (ud->eh == current)  in usbip_stop_eh()
101 	kthread_stop(ud->eh);  in usbip_stop_eh()
106 void usbip_event_add(struct usbip_device *ud, unsigned long event)  in usbip_event_add()  argument
110 	spin_lock_irqsave(&ud->lock, flags);  in usbip_event_add()
111 	ud->event |= event;  in usbip_event_add()
112 	wake_up(&ud->eh_waitq);  in usbip_event_add()
113 	spin_unlock_irqrestore(&ud->lock, flags);  in usbip_event_add()
117 int usbip_event_happened(struct usbip_device *ud)  in usbip_event_happened()  argument
121 	spin_lock(&ud->lock);  in usbip_event_happened()
122 	if (ud->event != 0)  in usbip_event_happened()
124 	spin_unlock(&ud->lock);  in usbip_event_happened()