hid/usbhid/hiddev.c

62 	struct list_head *list;
79 		list = report_enum->report_list.next;
80 		report = list_entry(list, struct hid_report, list);
89 		list = report->list.next;
90 		if (list == &report_enum->report_list)
93 		report = list_entry(list, struct hid_report, list);
123 	list_for_each_entry(report, &report_enum->report_list, list) {
144 	struct hiddev_list *list;
148 	list_for_each_entry(list, &hiddev->list, node) {
150 		    (list->flags & HIDDEV_FLAG_REPORT) != 0) {
151 			list->buffer[list->head] = *uref;
152 			list->head = (list->head + 1) &
154 			kill_fasync(&list->fasync, SIGIO, POLL_IN);
207 	struct hiddev_list *list = file->private_data;
209 	return fasync_helper(fd, file, on, &list->fasync);
218 	struct hiddev_list *list = file->private_data;
221 	spin_lock_irqsave(&list->hiddev->list_lock, flags);
222 	list_del(&list->node);
223 	spin_unlock_irqrestore(&list->hiddev->list_lock, flags);
225 	mutex_lock(&list->hiddev->existancelock);
226 	if (!--list->hiddev->open) {
227 		if (list->hiddev->exist) {
228 			hid_hw_close(list->hiddev->hid);
229 			hid_hw_power(list->hiddev->hid, PM_HINT_NORMAL);
231 			mutex_unlock(&list->hiddev->existancelock);
232 			kfree(list->hiddev);
233 			vfree(list);
238 	mutex_unlock(&list->hiddev->existancelock);
239 	vfree(list);
246 	struct hiddev_list *list;
251 	list = vzalloc(sizeof(*list));
252 	if (!list)
255 	mutex_init(&list->thread_lock);
256 	list->hiddev = hiddev;
269 	list_add_tail(&list->node, &hiddev->list);
272 	file->private_data = list;
280 	vfree(list);
322 	struct hiddev_list *list = file->private_data;
326 	event_size = ((list->flags & HIDDEV_FLAG_UREF) != 0) ?
333 	retval = mutex_lock_interruptible(&list->thread_lock);
338 		if (list->head == list->tail) {
339 			prepare_to_wait(&list->hiddev->wait, &wait, TASK_INTERRUPTIBLE);
341 			while (list->head == list->tail) {
346 				if (!list->hiddev->exist) {
356 				mutex_unlock(&list->thread_lock);
358 				if (mutex_lock_interruptible(&list->thread_lock)) {
359 					finish_wait(&list->hiddev->wait, &wait);
364 			finish_wait(&list->hiddev->wait, &wait);
369 			mutex_unlock(&list->thread_lock);
374 		while (list->head != list->tail &&
376 			if ((list->flags & HIDDEV_FLAG_UREF) == 0) {
377 				if (list->buffer[list->tail].field_index != HID_FIELD_INDEX_NONE) {
380 					event.hid = list->buffer[list->tail].usage_code;
381 					event.value = list->buffer[list->tail].value;
383 						mutex_unlock(&list->thread_lock);
389 				if (list->buffer[list->tail].field_index != HID_FIELD_INDEX_NONE ||
390 				    (list->flags & HIDDEV_FLAG_REPORT) != 0) {
392 					if (copy_to_user(buffer + retval, list->buffer + list->tail, sizeof(struct hiddev_usage_ref))) {
393 						mutex_unlock(&list->thread_lock);
399 			list->tail = (list->tail + 1) & (HIDDEV_BUFFER_SIZE - 1);
403 	mutex_unlock(&list->thread_lock);
414 	struct hiddev_list *list = file->private_data;
416 	poll_wait(file, &list->hiddev->wait, wait);
417 	if (list->head != list->tail)
419 	if (!list->hiddev->exist)
596 	struct hiddev_list *list = file->private_data;
597 	struct hiddev *hiddev = list->hiddev;
660 		r = put_user(list->flags, (int __user *)arg) ?
678 			list->flags = newflags;
897 	INIT_LIST_HEAD(&hiddev->list);