246 	struct f_hidg *hidg = file->private_data;  in f_hidg_read()  local
258 	spin_lock_irqsave(&hidg->read_spinlock, flags);  in f_hidg_read()
260 #define READ_COND (!list_empty(&hidg->completed_out_req))  in f_hidg_read()
264 		spin_unlock_irqrestore(&hidg->read_spinlock, flags);  in f_hidg_read()
268 		if (wait_event_interruptible(hidg->read_queue, READ_COND))  in f_hidg_read()
271 		spin_lock_irqsave(&hidg->read_spinlock, flags);  in f_hidg_read()
275 	list = list_first_entry(&hidg->completed_out_req,  in f_hidg_read()
286 	spin_unlock_irqrestore(&hidg->read_spinlock, flags);  in f_hidg_read()
301 		req->length = hidg->report_length;  in f_hidg_read()
302 		ret = usb_ep_queue(hidg->out_ep, req, GFP_KERNEL);  in f_hidg_read()
304 			free_ep_req(hidg->out_ep, req);  in f_hidg_read()
308 		spin_lock_irqsave(&hidg->read_spinlock, flags);  in f_hidg_read()
309 		list_add(&list->list, &hidg->completed_out_req);  in f_hidg_read()
310 		spin_unlock_irqrestore(&hidg->read_spinlock, flags);  in f_hidg_read()
312 		wake_up(&hidg->read_queue);  in f_hidg_read()
320 	struct f_hidg *hidg = (struct f_hidg *)ep->driver_data;  in f_hidg_req_complete()  local
324 		ERROR(hidg->func.config->cdev,  in f_hidg_req_complete()
328 	spin_lock_irqsave(&hidg->write_spinlock, flags);  in f_hidg_req_complete()
329 	hidg->write_pending = 0;  in f_hidg_req_complete()
330 	spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in f_hidg_req_complete()
331 	wake_up(&hidg->write_queue);  in f_hidg_req_complete()
337 	struct f_hidg *hidg  = file->private_data;  in f_hidg_write()  local
345 	spin_lock_irqsave(&hidg->write_spinlock, flags);  in f_hidg_write()
347 #define WRITE_COND (!hidg->write_pending)  in f_hidg_write()
351 		spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in f_hidg_write()
356 				hidg->write_queue, WRITE_COND))  in f_hidg_write()
359 		spin_lock_irqsave(&hidg->write_spinlock, flags);  in f_hidg_write()
362 	hidg->write_pending = 1;  in f_hidg_write()
363 	req = hidg->req;  in f_hidg_write()
364 	count  = min_t(unsigned, count, hidg->report_length);  in f_hidg_write()
366 	spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in f_hidg_write()
370 		ERROR(hidg->func.config->cdev,  in f_hidg_write()
376 	spin_lock_irqsave(&hidg->write_spinlock, flags);  in f_hidg_write()
379 	if (!hidg->req) {  in f_hidg_write()
380 		free_ep_req(hidg->in_ep, req);  in f_hidg_write()
392 	req->context  = hidg;  in f_hidg_write()
394 	status = usb_ep_queue(hidg->in_ep, req, GFP_ATOMIC);  in f_hidg_write()
396 		ERROR(hidg->func.config->cdev,  in f_hidg_write()
402 	spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in f_hidg_write()
406 	spin_lock_irqsave(&hidg->write_spinlock, flags);  in f_hidg_write()
408 	hidg->write_pending = 0;  in f_hidg_write()
409 	spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in f_hidg_write()
411 	wake_up(&hidg->write_queue);  in f_hidg_write()
418 	struct f_hidg	*hidg  = file->private_data;  in f_hidg_poll()  local
421 	poll_wait(file, &hidg->read_queue, wait);  in f_hidg_poll()
422 	poll_wait(file, &hidg->write_queue, wait);  in f_hidg_poll()
444 	struct f_hidg *hidg =  in f_hidg_open()  local
447 	fd->private_data = hidg;  in f_hidg_open()
463 	struct f_hidg *hidg = (struct f_hidg *) req->context;  in hidg_set_report_complete()  local
464 	struct usb_composite_dev *cdev = hidg->func.config->cdev;  in hidg_set_report_complete()
478 		spin_lock_irqsave(&hidg->read_spinlock, flags);  in hidg_set_report_complete()
479 		list_add_tail(&req_list->list, &hidg->completed_out_req);  in hidg_set_report_complete()
480 		spin_unlock_irqrestore(&hidg->read_spinlock, flags);  in hidg_set_report_complete()
482 		wake_up(&hidg->read_queue);  in hidg_set_report_complete()
499 	struct f_hidg			*hidg = func_to_hidg(f);  in hidg_setup()  local
518 		length = min_t(unsigned, length, hidg->report_length);  in hidg_setup()
528 		((u8 *) req->buf)[0] = hidg->protocol;  in hidg_setup()
548 		if (hidg->bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {  in hidg_setup()
549 			hidg->protocol = value;  in hidg_setup()
565 				cpu_to_le16(hidg->report_desc_length);  in hidg_setup()
576 						   hidg->report_desc_length);  in hidg_setup()
577 			memcpy(req->buf, hidg->report_desc, length);  in hidg_setup()
610 	struct f_hidg *hidg = func_to_hidg(f);  in hidg_disable()  local
614 	usb_ep_disable(hidg->in_ep);  in hidg_disable()
615 	usb_ep_disable(hidg->out_ep);  in hidg_disable()
617 	spin_lock_irqsave(&hidg->read_spinlock, flags);  in hidg_disable()
618 	list_for_each_entry_safe(list, next, &hidg->completed_out_req, list) {  in hidg_disable()
619 		free_ep_req(hidg->out_ep, list->req);  in hidg_disable()
623 	spin_unlock_irqrestore(&hidg->read_spinlock, flags);  in hidg_disable()
625 	spin_lock_irqsave(&hidg->write_spinlock, flags);  in hidg_disable()
626 	if (!hidg->write_pending) {  in hidg_disable()
627 		free_ep_req(hidg->in_ep, hidg->req);  in hidg_disable()
628 		hidg->write_pending = 1;  in hidg_disable()
631 	hidg->req = NULL;  in hidg_disable()
632 	spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in hidg_disable()
638 	struct f_hidg				*hidg = func_to_hidg(f);  in hidg_set_alt()  local
645 	if (hidg->in_ep != NULL) {  in hidg_set_alt()
647 		usb_ep_disable(hidg->in_ep);  in hidg_set_alt()
650 					    hidg->in_ep);  in hidg_set_alt()
655 		status = usb_ep_enable(hidg->in_ep);  in hidg_set_alt()
660 		hidg->in_ep->driver_data = hidg;  in hidg_set_alt()
662 		req_in = hidg_alloc_ep_req(hidg->in_ep, hidg->report_length);  in hidg_set_alt()
670 	if (hidg->out_ep != NULL) {  in hidg_set_alt()
672 		usb_ep_disable(hidg->out_ep);  in hidg_set_alt()
675 					    hidg->out_ep);  in hidg_set_alt()
680 		status = usb_ep_enable(hidg->out_ep);  in hidg_set_alt()
685 		hidg->out_ep->driver_data = hidg;  in hidg_set_alt()
690 		for (i = 0; i < hidg->qlen && status == 0; i++) {  in hidg_set_alt()
692 					hidg_alloc_ep_req(hidg->out_ep,  in hidg_set_alt()
693 							  hidg->report_length);  in hidg_set_alt()
696 				req->context  = hidg;  in hidg_set_alt()
697 				status = usb_ep_queue(hidg->out_ep, req,  in hidg_set_alt()
701 						hidg->out_ep->name, status);  in hidg_set_alt()
702 					free_ep_req(hidg->out_ep, req);  in hidg_set_alt()
711 	if (hidg->in_ep != NULL) {  in hidg_set_alt()
712 		spin_lock_irqsave(&hidg->write_spinlock, flags);  in hidg_set_alt()
713 		hidg->req = req_in;  in hidg_set_alt()
714 		hidg->write_pending = 0;  in hidg_set_alt()
715 		spin_unlock_irqrestore(&hidg->write_spinlock, flags);  in hidg_set_alt()
717 		wake_up(&hidg->write_queue);  in hidg_set_alt()
721 	usb_ep_disable(hidg->out_ep);  in hidg_set_alt()
724 		free_ep_req(hidg->in_ep, req_in);  in hidg_set_alt()
727 	if (hidg->in_ep)  in hidg_set_alt()
728 		usb_ep_disable(hidg->in_ep);  in hidg_set_alt()
747 	struct f_hidg		*hidg = func_to_hidg(f);  in hidg_bind()  local
771 	hidg->in_ep = ep;  in hidg_bind()
776 	hidg->out_ep = ep;  in hidg_bind()
779 	hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass;  in hidg_bind()
780 	hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol;  in hidg_bind()
781 	hidg->protocol = HID_REPORT_PROTOCOL;  in hidg_bind()
782 	hidg_ss_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
784 				cpu_to_le16(hidg->report_length);  in hidg_bind()
785 	hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
786 	hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
787 	hidg_ss_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
789 				cpu_to_le16(hidg->report_length);  in hidg_bind()
790 	hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
791 	hidg_fs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);  in hidg_bind()
798 		cpu_to_le16(hidg->report_desc_length);  in hidg_bind()
815 	spin_lock_init(&hidg->write_spinlock);  in hidg_bind()
816 	hidg->write_pending = 1;  in hidg_bind()
817 	hidg->req = NULL;  in hidg_bind()
818 	spin_lock_init(&hidg->read_spinlock);  in hidg_bind()
819 	init_waitqueue_head(&hidg->write_queue);  in hidg_bind()
820 	init_waitqueue_head(&hidg->read_queue);  in hidg_bind()
821 	INIT_LIST_HEAD(&hidg->completed_out_req);  in hidg_bind()
824 	cdev_init(&hidg->cdev, &f_hidg_fops);  in hidg_bind()
825 	dev = MKDEV(major, hidg->minor);  in hidg_bind()
826 	status = cdev_add(&hidg->cdev, dev, 1);  in hidg_bind()
831 			       "%s%d", "hidg", hidg->minor);  in hidg_bind()
839 	cdev_del(&hidg->cdev);  in hidg_bind()
844 	if (hidg->req != NULL)  in hidg_bind()
845 		free_ep_req(hidg->in_ep, hidg->req);  in hidg_bind()
1063 	struct f_hidg *hidg;  in hidg_free()  local
1066 	hidg = func_to_hidg(f);  in hidg_free()
1068 	kfree(hidg->report_desc);  in hidg_free()
1069 	kfree(hidg);  in hidg_free()
1077 	struct f_hidg *hidg = func_to_hidg(f);  in hidg_unbind()  local
1079 	device_destroy(hidg_class, MKDEV(major, hidg->minor));  in hidg_unbind()
1080 	cdev_del(&hidg->cdev);  in hidg_unbind()
1087 	struct f_hidg *hidg;  in hidg_alloc()  local
1091 	hidg = kzalloc(sizeof(*hidg), GFP_KERNEL);  in hidg_alloc()
1092 	if (!hidg)  in hidg_alloc()
1100 	hidg->minor = opts->minor;  in hidg_alloc()
1101 	hidg->bInterfaceSubClass = opts->subclass;  in hidg_alloc()
1102 	hidg->bInterfaceProtocol = opts->protocol;  in hidg_alloc()
1103 	hidg->report_length = opts->report_length;  in hidg_alloc()
1104 	hidg->report_desc_length = opts->report_desc_length;  in hidg_alloc()
1106 		hidg->report_desc = kmemdup(opts->report_desc,  in hidg_alloc()
1109 		if (!hidg->report_desc) {  in hidg_alloc()
1110 			kfree(hidg);  in hidg_alloc()
1118 	hidg->func.name    = "hid";  in hidg_alloc()
1119 	hidg->func.bind    = hidg_bind;  in hidg_alloc()
1120 	hidg->func.unbind  = hidg_unbind;  in hidg_alloc()
1121 	hidg->func.set_alt = hidg_set_alt;  in hidg_alloc()
1122 	hidg->func.disable = hidg_disable;  in hidg_alloc()
1123 	hidg->func.setup   = hidg_setup;  in hidg_alloc()
1124 	hidg->func.free_func = hidg_free;  in hidg_alloc()
1127 	hidg->qlen	   = 4;  in hidg_alloc()
1129 	return &hidg->func;  in hidg_alloc()