478 static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)  in rh_call_control()  argument
482 	u8		*ubuf = urb->transfer_buffer;  in rh_call_control()
494 	status = usb_hcd_link_urb_to_ep(hcd, urb);  in rh_call_control()
498 	urb->hcpriv = hcd;	/* Indicate it's queued */  in rh_call_control()
500 	cmd = (struct usb_ctrlrequest *) urb->setup_packet;  in rh_call_control()
506 	if (wLength > urb->transfer_buffer_length)  in rh_call_control()
523 	urb->actual_length = 0;  in rh_call_control()
622 				urb->actual_length = rh_string(wValue & 0xff,  in rh_call_control()
711 		if (urb->transfer_buffer_length < len)  in rh_call_control()
712 			len = urb->transfer_buffer_length;  in rh_call_control()
713 		urb->actual_length = len;  in rh_call_control()
737 	usb_hcd_unlink_urb_from_ep(hcd, urb);  in rh_call_control()
738 	usb_hcd_giveback_urb(hcd, urb, status);  in rh_call_control()
754 	struct urb	*urb;  in usb_hcd_poll_rh_status()  local
770 		urb = hcd->status_urb;  in usb_hcd_poll_rh_status()
771 		if (urb) {  in usb_hcd_poll_rh_status()
774 			if (urb->transfer_buffer_length >= length) {  in usb_hcd_poll_rh_status()
778 				length = urb->transfer_buffer_length;  in usb_hcd_poll_rh_status()
780 			urb->actual_length = length;  in usb_hcd_poll_rh_status()
781 			memcpy(urb->transfer_buffer, buffer, length);  in usb_hcd_poll_rh_status()
783 			usb_hcd_unlink_urb_from_ep(hcd, urb);  in usb_hcd_poll_rh_status()
784 			usb_hcd_giveback_urb(hcd, urb, status);  in usb_hcd_poll_rh_status()
812 static int rh_queue_status (struct usb_hcd *hcd, struct urb *urb)  in rh_queue_status()  argument
816 	unsigned	len = 1 + (urb->dev->maxchild / 8);  in rh_queue_status()
819 	if (hcd->status_urb || urb->transfer_buffer_length < len) {  in rh_queue_status()
825 	retval = usb_hcd_link_urb_to_ep(hcd, urb);  in rh_queue_status()
829 	hcd->status_urb = urb;  in rh_queue_status()
830 	urb->hcpriv = hcd;	/* indicate it's queued */  in rh_queue_status()
843 static int rh_urb_enqueue (struct usb_hcd *hcd, struct urb *urb)  in rh_urb_enqueue()  argument
845 	if (usb_endpoint_xfer_int(&urb->ep->desc))  in rh_urb_enqueue()
846 		return rh_queue_status (hcd, urb);  in rh_urb_enqueue()
847 	if (usb_endpoint_xfer_control(&urb->ep->desc))  in rh_urb_enqueue()
848 		return rh_call_control (hcd, urb);  in rh_urb_enqueue()
857 static int usb_rh_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)  in usb_rh_urb_dequeue()  argument
863 	rc = usb_hcd_check_unlink_urb(hcd, urb, status);  in usb_rh_urb_dequeue()
867 	if (usb_endpoint_num(&urb->ep->desc) == 0) {	/* Control URB */  in usb_rh_urb_dequeue()
873 		if (urb == hcd->status_urb) {  in usb_rh_urb_dequeue()
875 			usb_hcd_unlink_urb_from_ep(hcd, urb);  in usb_rh_urb_dequeue()
876 			usb_hcd_giveback_urb(hcd, urb, status);  in usb_rh_urb_dequeue()
1153 int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb)  in usb_hcd_link_urb_to_ep()  argument
1160 	if (unlikely(atomic_read(&urb->reject))) {  in usb_hcd_link_urb_to_ep()
1165 	if (unlikely(!urb->ep->enabled)) {  in usb_hcd_link_urb_to_ep()
1170 	if (unlikely(!urb->dev->can_submit)) {  in usb_hcd_link_urb_to_ep()
1180 		urb->unlinked = 0;  in usb_hcd_link_urb_to_ep()
1181 		list_add_tail(&urb->urb_list, &urb->ep->urb_list);  in usb_hcd_link_urb_to_ep()
1211 int usb_hcd_check_unlink_urb(struct usb_hcd *hcd, struct urb *urb,  in usb_hcd_check_unlink_urb()  argument
1217 	list_for_each(tmp, &urb->ep->urb_list) {  in usb_hcd_check_unlink_urb()
1218 		if (tmp == &urb->urb_list)  in usb_hcd_check_unlink_urb()
1221 	if (tmp != &urb->urb_list)  in usb_hcd_check_unlink_urb()
1227 	if (urb->unlinked)  in usb_hcd_check_unlink_urb()
1229 	urb->unlinked = status;  in usb_hcd_check_unlink_urb()
1244 void usb_hcd_unlink_urb_from_ep(struct usb_hcd *hcd, struct urb *urb)  in usb_hcd_unlink_urb_from_ep()  argument
1248 	list_del_init(&urb->urb_list);  in usb_hcd_unlink_urb_from_ep()
1332 void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb)  in usb_hcd_unmap_urb_setup_for_dma()  argument
1335 	    (urb->transfer_flags & URB_SETUP_MAP_SINGLE))  in usb_hcd_unmap_urb_setup_for_dma()
1337 				urb->setup_dma,  in usb_hcd_unmap_urb_setup_for_dma()
1340 	else if (urb->transfer_flags & URB_SETUP_MAP_LOCAL)  in usb_hcd_unmap_urb_setup_for_dma()
1341 		hcd_free_coherent(urb->dev->bus,  in usb_hcd_unmap_urb_setup_for_dma()
1342 				&urb->setup_dma,  in usb_hcd_unmap_urb_setup_for_dma()
1343 				(void **) &urb->setup_packet,  in usb_hcd_unmap_urb_setup_for_dma()
1348 	urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL);  in usb_hcd_unmap_urb_setup_for_dma()
1352 static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)  in unmap_urb_for_dma()  argument
1355 		hcd->driver->unmap_urb_for_dma(hcd, urb);  in unmap_urb_for_dma()
1357 		usb_hcd_unmap_urb_for_dma(hcd, urb);  in unmap_urb_for_dma()
1360 void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)  in usb_hcd_unmap_urb_for_dma()  argument
1364 	usb_hcd_unmap_urb_setup_for_dma(hcd, urb);  in usb_hcd_unmap_urb_for_dma()
1366 	dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;  in usb_hcd_unmap_urb_for_dma()
1368 	    (urb->transfer_flags & URB_DMA_MAP_SG))  in usb_hcd_unmap_urb_for_dma()
1370 				urb->sg,  in usb_hcd_unmap_urb_for_dma()
1371 				urb->num_sgs,  in usb_hcd_unmap_urb_for_dma()
1374 		 (urb->transfer_flags & URB_DMA_MAP_PAGE))  in usb_hcd_unmap_urb_for_dma()
1376 				urb->transfer_dma,  in usb_hcd_unmap_urb_for_dma()
1377 				urb->transfer_buffer_length,  in usb_hcd_unmap_urb_for_dma()
1380 		 (urb->transfer_flags & URB_DMA_MAP_SINGLE))  in usb_hcd_unmap_urb_for_dma()
1382 				urb->transfer_dma,  in usb_hcd_unmap_urb_for_dma()
1383 				urb->transfer_buffer_length,  in usb_hcd_unmap_urb_for_dma()
1385 	else if (urb->transfer_flags & URB_MAP_LOCAL)  in usb_hcd_unmap_urb_for_dma()
1386 		hcd_free_coherent(urb->dev->bus,  in usb_hcd_unmap_urb_for_dma()
1387 				&urb->transfer_dma,  in usb_hcd_unmap_urb_for_dma()
1388 				&urb->transfer_buffer,  in usb_hcd_unmap_urb_for_dma()
1389 				urb->transfer_buffer_length,  in usb_hcd_unmap_urb_for_dma()
1393 	urb->transfer_flags &= ~(URB_DMA_MAP_SG | URB_DMA_MAP_PAGE |  in usb_hcd_unmap_urb_for_dma()
1398 static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,  in map_urb_for_dma()  argument
1402 		return hcd->driver->map_urb_for_dma(hcd, urb, mem_flags);  in map_urb_for_dma()
1404 		return usb_hcd_map_urb_for_dma(hcd, urb, mem_flags);  in map_urb_for_dma()
1407 int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,  in usb_hcd_map_urb_for_dma()  argument
1419 	if (usb_endpoint_xfer_control(&urb->ep->desc)) {  in usb_hcd_map_urb_for_dma()
1424 					urb->dev->bus, mem_flags,  in usb_hcd_map_urb_for_dma()
1425 					&urb->setup_dma,  in usb_hcd_map_urb_for_dma()
1426 					(void **)&urb->setup_packet,  in usb_hcd_map_urb_for_dma()
1431 			urb->transfer_flags |= URB_SETUP_MAP_LOCAL;  in usb_hcd_map_urb_for_dma()
1433 			if (object_is_on_stack(urb->setup_packet)) {  in usb_hcd_map_urb_for_dma()
1438 			urb->setup_dma = dma_map_single(  in usb_hcd_map_urb_for_dma()
1440 					urb->setup_packet,  in usb_hcd_map_urb_for_dma()
1444 						urb->setup_dma))  in usb_hcd_map_urb_for_dma()
1446 			urb->transfer_flags |= URB_SETUP_MAP_SINGLE;  in usb_hcd_map_urb_for_dma()
1450 	dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;  in usb_hcd_map_urb_for_dma()
1451 	if (urb->transfer_buffer_length != 0  in usb_hcd_map_urb_for_dma()
1452 	    && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {  in usb_hcd_map_urb_for_dma()
1455 					urb->dev->bus, mem_flags,  in usb_hcd_map_urb_for_dma()
1456 					&urb->transfer_dma,  in usb_hcd_map_urb_for_dma()
1457 					&urb->transfer_buffer,  in usb_hcd_map_urb_for_dma()
1458 					urb->transfer_buffer_length,  in usb_hcd_map_urb_for_dma()
1461 				urb->transfer_flags |= URB_MAP_LOCAL;  in usb_hcd_map_urb_for_dma()
1463 			if (urb->num_sgs) {  in usb_hcd_map_urb_for_dma()
1467 				if (usb_endpoint_xfer_isoc(&urb->ep->desc)) {  in usb_hcd_map_urb_for_dma()
1474 						urb->sg,  in usb_hcd_map_urb_for_dma()
1475 						urb->num_sgs,  in usb_hcd_map_urb_for_dma()
1480 					urb->transfer_flags |= URB_DMA_MAP_SG;  in usb_hcd_map_urb_for_dma()
1481 				urb->num_mapped_sgs = n;  in usb_hcd_map_urb_for_dma()
1482 				if (n != urb->num_sgs)  in usb_hcd_map_urb_for_dma()
1483 					urb->transfer_flags |=  in usb_hcd_map_urb_for_dma()
1485 			} else if (urb->sg) {  in usb_hcd_map_urb_for_dma()
1486 				struct scatterlist *sg = urb->sg;  in usb_hcd_map_urb_for_dma()
1487 				urb->transfer_dma = dma_map_page(  in usb_hcd_map_urb_for_dma()
1491 						urb->transfer_buffer_length,  in usb_hcd_map_urb_for_dma()
1494 						urb->transfer_dma))  in usb_hcd_map_urb_for_dma()
1497 					urb->transfer_flags |= URB_DMA_MAP_PAGE;  in usb_hcd_map_urb_for_dma()
1498 			} else if (object_is_on_stack(urb->transfer_buffer)) {  in usb_hcd_map_urb_for_dma()
1502 				urb->transfer_dma = dma_map_single(  in usb_hcd_map_urb_for_dma()
1504 						urb->transfer_buffer,  in usb_hcd_map_urb_for_dma()
1505 						urb->transfer_buffer_length,  in usb_hcd_map_urb_for_dma()
1508 						urb->transfer_dma))  in usb_hcd_map_urb_for_dma()
1511 					urb->transfer_flags |= URB_DMA_MAP_SINGLE;  in usb_hcd_map_urb_for_dma()
1514 		if (ret && (urb->transfer_flags & (URB_SETUP_MAP_SINGLE |  in usb_hcd_map_urb_for_dma()
1516 			usb_hcd_unmap_urb_for_dma(hcd, urb);  in usb_hcd_map_urb_for_dma()
1529 int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)  in usb_hcd_submit_urb()  argument
1532 	struct usb_hcd		*hcd = bus_to_hcd(urb->dev->bus);  in usb_hcd_submit_urb()
1538 	usb_get_urb(urb);  in usb_hcd_submit_urb()
1539 	atomic_inc(&urb->use_count);  in usb_hcd_submit_urb()
1540 	atomic_inc(&urb->dev->urbnum);  in usb_hcd_submit_urb()
1541 	usbmon_urb_submit(&hcd->self, urb);  in usb_hcd_submit_urb()
1551 	if (is_root_hub(urb->dev)) {  in usb_hcd_submit_urb()
1552 		status = rh_urb_enqueue(hcd, urb);  in usb_hcd_submit_urb()
1554 		status = map_urb_for_dma(hcd, urb, mem_flags);  in usb_hcd_submit_urb()
1556 			status = hcd->driver->urb_enqueue(hcd, urb, mem_flags);  in usb_hcd_submit_urb()
1558 				unmap_urb_for_dma(hcd, urb);  in usb_hcd_submit_urb()
1563 		usbmon_urb_submit_error(&hcd->self, urb, status);  in usb_hcd_submit_urb()
1564 		urb->hcpriv = NULL;  in usb_hcd_submit_urb()
1565 		INIT_LIST_HEAD(&urb->urb_list);  in usb_hcd_submit_urb()
1566 		atomic_dec(&urb->use_count);  in usb_hcd_submit_urb()
1574 		atomic_dec(&urb->dev->urbnum);  in usb_hcd_submit_urb()
1575 		if (atomic_read(&urb->reject))  in usb_hcd_submit_urb()
1577 		usb_put_urb(urb);  in usb_hcd_submit_urb()
1589 static int unlink1(struct usb_hcd *hcd, struct urb *urb, int status)  in unlink1()  argument
1593 	if (is_root_hub(urb->dev))  in unlink1()
1594 		value = usb_rh_urb_dequeue(hcd, urb, status);  in unlink1()
1600 		value = hcd->driver->urb_dequeue(hcd, urb, status);  in unlink1()
1611 int usb_hcd_unlink_urb (struct urb *urb, int status)  in usb_hcd_unlink_urb()  argument
1614 	struct usb_device	*udev = urb->dev;  in usb_hcd_unlink_urb()
1624 	if (atomic_read(&urb->use_count) > 0) {  in usb_hcd_unlink_urb()
1630 		hcd = bus_to_hcd(urb->dev->bus);  in usb_hcd_unlink_urb()
1631 		retval = unlink1(hcd, urb, status);  in usb_hcd_unlink_urb()
1636 					urb, retval);  in usb_hcd_unlink_urb()
1644 static void __usb_hcd_giveback_urb(struct urb *urb)  in __usb_hcd_giveback_urb()  argument
1646 	struct usb_hcd *hcd = bus_to_hcd(urb->dev->bus);  in __usb_hcd_giveback_urb()
1647 	struct usb_anchor *anchor = urb->anchor;  in __usb_hcd_giveback_urb()
1648 	int status = urb->unlinked;  in __usb_hcd_giveback_urb()
1650 	urb->hcpriv = NULL;  in __usb_hcd_giveback_urb()
1651 	if (unlikely((urb->transfer_flags & URB_SHORT_NOT_OK) &&  in __usb_hcd_giveback_urb()
1652 	    urb->actual_length < urb->transfer_buffer_length &&  in __usb_hcd_giveback_urb()
1656 	unmap_urb_for_dma(hcd, urb);  in __usb_hcd_giveback_urb()
1657 	usbmon_urb_complete(&hcd->self, urb, status);  in __usb_hcd_giveback_urb()
1659 	usb_unanchor_urb(urb);  in __usb_hcd_giveback_urb()
1664 	urb->status = status;  in __usb_hcd_giveback_urb()
1670 	kcov_remote_start_usb_softirq((u64)urb->dev->bus->busnum);  in __usb_hcd_giveback_urb()
1671 	urb->complete(urb);  in __usb_hcd_giveback_urb()
1675 	atomic_dec(&urb->use_count);  in __usb_hcd_giveback_urb()
1683 	if (unlikely(atomic_read(&urb->reject)))  in __usb_hcd_giveback_urb()
1685 	usb_put_urb(urb);  in __usb_hcd_giveback_urb()
1699 		struct urb *urb;  in usb_giveback_urb_bh()  local
1701 		urb = list_entry(local_list.next, struct urb, urb_list);  in usb_giveback_urb_bh()
1702 		list_del_init(&urb->urb_list);  in usb_giveback_urb_bh()
1703 		bh->completing_ep = urb->ep;  in usb_giveback_urb_bh()
1704 		__usb_hcd_giveback_urb(urb);  in usb_giveback_urb_bh()
1744 void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)  in usb_hcd_giveback_urb()  argument
1750 	if (likely(!urb->unlinked))  in usb_hcd_giveback_urb()
1751 		urb->unlinked = status;  in usb_hcd_giveback_urb()
1753 	if (!hcd_giveback_urb_in_bh(hcd) && !is_root_hub(urb->dev)) {  in usb_hcd_giveback_urb()
1754 		__usb_hcd_giveback_urb(urb);  in usb_hcd_giveback_urb()
1758 	if (usb_pipeisoc(urb->pipe) || usb_pipeint(urb->pipe))  in usb_hcd_giveback_urb()
1764 	list_add_tail(&urb->urb_list, &bh->head);  in usb_hcd_giveback_urb()
1787 	struct urb		*urb;  in usb_hcd_flush_endpoint()  local
1797 	list_for_each_entry_reverse(urb, &ep->urb_list, urb_list) {  in usb_hcd_flush_endpoint()
1800 		if (urb->unlinked)  in usb_hcd_flush_endpoint()
1802 		usb_get_urb (urb);  in usb_hcd_flush_endpoint()
1803 		is_in = usb_urb_dir_in(urb);  in usb_hcd_flush_endpoint()
1807 		unlink1(hcd, urb, -ESHUTDOWN);  in usb_hcd_flush_endpoint()
1810 			urb, usb_endpoint_num(&ep->desc),  in usb_hcd_flush_endpoint()
1813 		usb_put_urb (urb);  in usb_hcd_flush_endpoint()
1826 		urb = NULL;  in usb_hcd_flush_endpoint()
1828 			urb = list_entry (ep->urb_list.prev, struct urb,  in usb_hcd_flush_endpoint()
1830 			usb_get_urb (urb);  in usb_hcd_flush_endpoint()
1834 		if (urb) {  in usb_hcd_flush_endpoint()
1835 			usb_kill_urb (urb);  in usb_hcd_flush_endpoint()
1836 			usb_put_urb (urb);  in usb_hcd_flush_endpoint()
2141 static void usb_ehset_completion(struct urb *urb)  in usb_ehset_completion()  argument
2143 	struct completion  *done = urb->context;  in usb_ehset_completion()
2153 static struct urb *request_single_step_set_feature_urb(  in request_single_step_set_feature_urb()
2159 	struct urb *urb;  in request_single_step_set_feature_urb()  local
2162 	urb = usb_alloc_urb(0, GFP_KERNEL);  in request_single_step_set_feature_urb()
2163 	if (!urb)  in request_single_step_set_feature_urb()
2166 	urb->pipe = usb_rcvctrlpipe(udev, 0);  in request_single_step_set_feature_urb()
2168 	urb->ep = &udev->ep0;  in request_single_step_set_feature_urb()
2169 	urb->dev = udev;  in request_single_step_set_feature_urb()
2170 	urb->setup_packet = (void *)dr;  in request_single_step_set_feature_urb()
2171 	urb->transfer_buffer = buf;  in request_single_step_set_feature_urb()
2172 	urb->transfer_buffer_length = USB_DT_DEVICE_SIZE;  in request_single_step_set_feature_urb()
2173 	urb->complete = usb_ehset_completion;  in request_single_step_set_feature_urb()
2174 	urb->status = -EINPROGRESS;  in request_single_step_set_feature_urb()
2175 	urb->actual_length = 0;  in request_single_step_set_feature_urb()
2176 	urb->transfer_flags = URB_DIR_IN;  in request_single_step_set_feature_urb()
2177 	usb_get_urb(urb);  in request_single_step_set_feature_urb()
2178 	atomic_inc(&urb->use_count);  in request_single_step_set_feature_urb()
2179 	atomic_inc(&urb->dev->urbnum);  in request_single_step_set_feature_urb()
2180 	if (map_urb_for_dma(hcd, urb, GFP_KERNEL)) {  in request_single_step_set_feature_urb()
2181 		usb_put_urb(urb);  in request_single_step_set_feature_urb()
2182 		usb_free_urb(urb);  in request_single_step_set_feature_urb()
2186 	urb->context = done;  in request_single_step_set_feature_urb()
2187 	return urb;  in request_single_step_set_feature_urb()
2194 	struct urb *urb;  in ehset_single_step_set_feature()  local
2221 	urb = request_single_step_set_feature_urb(udev, dr, buf, &done);  in ehset_single_step_set_feature()
2222 	if (!urb)  in ehset_single_step_set_feature()
2226 	retval = hcd->driver->submit_single_step_set_feature(hcd, urb, 1);  in ehset_single_step_set_feature()
2230 		usb_kill_urb(urb);  in ehset_single_step_set_feature()
2239 	urb->status = -EINPROGRESS;  in ehset_single_step_set_feature()
2240 	usb_get_urb(urb);  in ehset_single_step_set_feature()
2241 	atomic_inc(&urb->use_count);  in ehset_single_step_set_feature()
2242 	atomic_inc(&urb->dev->urbnum);  in ehset_single_step_set_feature()
2243 	retval = hcd->driver->submit_single_step_set_feature(hcd, urb, 0);  in ehset_single_step_set_feature()
2246 		usb_kill_urb(urb);  in ehset_single_step_set_feature()
2252 	usb_free_urb(urb);  in ehset_single_step_set_feature()