20 static void mon_stop(struct mon_bus *mbus);
21 static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus);
35 void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r)  in mon_reader_add()  argument
40 	spin_lock_irqsave(&mbus->lock, flags);  in mon_reader_add()
41 	if (mbus->nreaders == 0) {  in mon_reader_add()
42 		if (mbus == &mon_bus0) {  in mon_reader_add()
49 			mbus->u_bus->monitored = 1;  in mon_reader_add()
52 	mbus->nreaders++;  in mon_reader_add()
53 	list_add_tail(&r->r_link, &mbus->r_list);  in mon_reader_add()
54 	spin_unlock_irqrestore(&mbus->lock, flags);  in mon_reader_add()
56 	kref_get(&mbus->ref);  in mon_reader_add()
64 void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r)  in mon_reader_del()  argument
68 	spin_lock_irqsave(&mbus->lock, flags);  in mon_reader_del()
70 	--mbus->nreaders;  in mon_reader_del()
71 	if (mbus->nreaders == 0)  in mon_reader_del()
72 		mon_stop(mbus);  in mon_reader_del()
73 	spin_unlock_irqrestore(&mbus->lock, flags);  in mon_reader_del()
75 	kref_put(&mbus->ref, mon_bus_drop);  in mon_reader_del()
80 static void mon_bus_submit(struct mon_bus *mbus, struct urb *urb)  in mon_bus_submit()  argument
86 	spin_lock_irqsave(&mbus->lock, flags);  in mon_bus_submit()
87 	mbus->cnt_events++;  in mon_bus_submit()
88 	list_for_each (pos, &mbus->r_list) {  in mon_bus_submit()
92 	spin_unlock_irqrestore(&mbus->lock, flags);  in mon_bus_submit()
97 	struct mon_bus *mbus;  in mon_submit()  local
99 	if ((mbus = ubus->mon_bus) != NULL)  in mon_submit()
100 		mon_bus_submit(mbus, urb);  in mon_submit()
106 static void mon_bus_submit_error(struct mon_bus *mbus, struct urb *urb, int error)  in mon_bus_submit_error()  argument
112 	spin_lock_irqsave(&mbus->lock, flags);  in mon_bus_submit_error()
113 	mbus->cnt_events++;  in mon_bus_submit_error()
114 	list_for_each (pos, &mbus->r_list) {  in mon_bus_submit_error()
118 	spin_unlock_irqrestore(&mbus->lock, flags);  in mon_bus_submit_error()
123 	struct mon_bus *mbus;  in mon_submit_error()  local
125 	if ((mbus = ubus->mon_bus) != NULL)  in mon_submit_error()
126 		mon_bus_submit_error(mbus, urb, error);  in mon_submit_error()
132 static void mon_bus_complete(struct mon_bus *mbus, struct urb *urb, int status)  in mon_bus_complete()  argument
138 	spin_lock_irqsave(&mbus->lock, flags);  in mon_bus_complete()
139 	mbus->cnt_events++;  in mon_bus_complete()
140 	list_for_each (pos, &mbus->r_list) {  in mon_bus_complete()
144 	spin_unlock_irqrestore(&mbus->lock, flags);  in mon_bus_complete()
149 	struct mon_bus *mbus;  in mon_complete()  local
151 	if ((mbus = ubus->mon_bus) != NULL)  in mon_complete()
152 		mon_bus_complete(mbus, urb, status);  in mon_complete()
161 static void mon_stop(struct mon_bus *mbus)  in mon_stop()  argument
166 	if (mbus == &mon_bus0) {  in mon_stop()
168 			mbus = list_entry(p, struct mon_bus, bus_link);  in mon_stop()
172 			if (mbus->nreaders == 0 && (ubus = mbus->u_bus) != NULL)  in mon_stop()
180 		if (mon_bus0.nreaders == 0 && (ubus = mbus->u_bus) != NULL) {  in mon_stop()
207 	struct mon_bus *mbus = ubus->mon_bus;  in mon_bus_remove()  local
210 	list_del(&mbus->bus_link);  in mon_bus_remove()
211 	if (mbus->text_inited)  in mon_bus_remove()
212 		mon_text_del(mbus);  in mon_bus_remove()
213 	if (mbus->bin_inited)  in mon_bus_remove()
214 		mon_bin_del(mbus);  in mon_bus_remove()
216 	mon_dissolve(mbus, ubus);  in mon_bus_remove()
217 	kref_put(&mbus->ref, mon_bus_drop);  in mon_bus_remove()
250 static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus)  in mon_dissolve()  argument
259 	mbus->u_bus = NULL;  in mon_dissolve()
269 	struct mon_bus *mbus = container_of(r, struct mon_bus, ref);  in mon_bus_drop()  local
270 	kfree(mbus);  in mon_bus_drop()
281 	struct mon_bus *mbus;  in mon_bus_init()  local
283 	if ((mbus = kzalloc(sizeof(struct mon_bus), GFP_KERNEL)) == NULL)  in mon_bus_init()
285 	kref_init(&mbus->ref);  in mon_bus_init()
286 	spin_lock_init(&mbus->lock);  in mon_bus_init()
287 	INIT_LIST_HEAD(&mbus->r_list);  in mon_bus_init()
293 	mbus->u_bus = ubus;  in mon_bus_init()
294 	ubus->mon_bus = mbus;  in mon_bus_init()
296 	mbus->text_inited = mon_text_add(mbus, ubus);  in mon_bus_init()
297 	mbus->bin_inited = mon_bin_add(mbus, ubus);  in mon_bus_init()
300 	list_add_tail(&mbus->bus_link, &mon_buses);  in mon_bus_init()
310 	struct mon_bus *mbus = &mon_bus0;  in mon_bus0_init()  local
312 	kref_init(&mbus->ref);  in mon_bus0_init()
313 	spin_lock_init(&mbus->lock);  in mon_bus0_init()
314 	INIT_LIST_HEAD(&mbus->r_list);  in mon_bus0_init()
316 	mbus->text_inited = mon_text_add(mbus, NULL);  in mon_bus0_init()
317 	mbus->bin_inited = mon_bin_add(mbus, NULL);  in mon_bus0_init()
331 	struct mon_bus *mbus;  in mon_bus_lookup()  local
337 		mbus = list_entry(p, struct mon_bus, bus_link);  in mon_bus_lookup()
338 		if (mbus->u_bus->busnum == num) {  in mon_bus_lookup()
339 			return mbus;  in mon_bus_lookup()
382 	struct mon_bus *mbus;  in mon_exit()  local
392 		mbus = list_entry(p, struct mon_bus, bus_link);  in mon_exit()
395 		if (mbus->text_inited)  in mon_exit()
396 			mon_text_del(mbus);  in mon_exit()
397 		if (mbus->bin_inited)  in mon_exit()
398 			mon_bin_del(mbus);  in mon_exit()
405 		if (mbus->nreaders) {  in mon_exit()
408 			    mbus->nreaders, mbus->u_bus->busnum);  in mon_exit()
409 			atomic_set(&mbus->ref.refcount, 2);	/* Force leak */  in mon_exit()
412 		mon_dissolve(mbus, mbus->u_bus);  in mon_exit()
413 		kref_put(&mbus->ref, mon_bus_drop);  in mon_exit()
416 	mbus = &mon_bus0;  in mon_exit()
417 	if (mbus->text_inited)  in mon_exit()
418 		mon_text_del(mbus);  in mon_exit()
419 	if (mbus->bin_inited)  in mon_exit()
420 		mon_bin_del(mbus);  in mon_exit()