254 	struct net_device *netdev;  member
275 	struct net_device *netdev = dev->netdev;  in ems_usb_read_interrupt_callback()  local
278 	if (!netif_device_present(netdev))  in ems_usb_read_interrupt_callback()
285 			if (netif_queue_stopped(netdev)){  in ems_usb_read_interrupt_callback()
286 				netif_wake_queue(netdev);  in ems_usb_read_interrupt_callback()
297 		netdev_info(netdev, "Rx interrupt aborted %d\n", urb->status);  in ems_usb_read_interrupt_callback()
304 		netif_device_detach(netdev);  in ems_usb_read_interrupt_callback()
306 		netdev_err(netdev, "failed resubmitting intr urb: %d\n", err);  in ems_usb_read_interrupt_callback()
314 	struct net_device_stats *stats = &dev->netdev->stats;  in ems_usb_rx_can_msg()
316 	skb = alloc_can_skb(dev->netdev, &cf);  in ems_usb_rx_can_msg()
344 	struct net_device_stats *stats = &dev->netdev->stats;  in ems_usb_rx_err()
346 	skb = alloc_can_err_skb(dev->netdev, &cf);  in ems_usb_rx_err()
358 			can_bus_off(dev->netdev);  in ems_usb_rx_err()
420 	struct net_device *netdev;  in ems_usb_read_bulk_callback()  local
423 	netdev = dev->netdev;  in ems_usb_read_bulk_callback()
425 	if (!netif_device_present(netdev))  in ems_usb_read_bulk_callback()
436 		netdev_info(netdev, "Rx URB aborted (%d)\n", urb->status);  in ems_usb_read_bulk_callback()
480 				netdev_err(netdev, "format error\n");  in ems_usb_read_bulk_callback()
494 		netif_device_detach(netdev);  in ems_usb_read_bulk_callback()
496 		netdev_err(netdev,  in ems_usb_read_bulk_callback()
507 	struct net_device *netdev;  in ems_usb_write_bulk_callback()  local
512 	netdev = dev->netdev;  in ems_usb_write_bulk_callback()
520 	if (!netif_device_present(netdev))  in ems_usb_write_bulk_callback()
524 		netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);  in ems_usb_write_bulk_callback()
526 	netdev->trans_start = jiffies;  in ems_usb_write_bulk_callback()
529 	netdev->stats.tx_packets++;  in ems_usb_write_bulk_callback()
530 	netdev->stats.tx_bytes += context->dlc;  in ems_usb_write_bulk_callback()
532 	can_get_echo_skb(netdev, context->echo_index);  in ems_usb_write_bulk_callback()
592 	struct net_device *netdev = dev->netdev;  in ems_usb_start()  local
605 			netdev_err(netdev, "No memory left for URBs\n");  in ems_usb_start()
613 			netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start()
640 		netdev_warn(netdev, "couldn't setup read URBs\n");  in ems_usb_start()
646 		netdev_warn(netdev, "rx performance may be slow\n");  in ems_usb_start()
657 		netdev_warn(netdev, "intr URB submit failed: %d\n", err);  in ems_usb_start()
686 	netdev_warn(netdev, "couldn't submit control: %d\n", err);  in ems_usb_start()
706 static int ems_usb_open(struct net_device *netdev)  in ems_usb_open()  argument
708 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_open()
716 	err = open_candev(netdev);  in ems_usb_open()
724 			netif_device_detach(dev->netdev);  in ems_usb_open()
726 		netdev_warn(netdev, "couldn't start device: %d\n", err);  in ems_usb_open()
728 		close_candev(netdev);  in ems_usb_open()
734 	netif_start_queue(netdev);  in ems_usb_open()
739 static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *netdev)  in ems_usb_start_xmit()  argument
741 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_start_xmit()
743 	struct net_device_stats *stats = &netdev->stats;  in ems_usb_start_xmit()
752 	if (can_dropped_invalid_skb(netdev, skb))  in ems_usb_start_xmit()
758 		netdev_err(netdev, "No memory left for URBs\n");  in ems_usb_start_xmit()
764 		netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start_xmit()
804 		netdev_warn(netdev, "couldn't find free context\n");  in ems_usb_start_xmit()
818 	can_put_echo_skb(skb, netdev, context->echo_index);  in ems_usb_start_xmit()
824 		can_free_echo_skb(netdev, context->echo_index);  in ems_usb_start_xmit()
833 			netif_device_detach(netdev);  in ems_usb_start_xmit()
835 			netdev_warn(netdev, "failed tx_urb %d\n", err);  in ems_usb_start_xmit()
840 		netdev->trans_start = jiffies;  in ems_usb_start_xmit()
845 			netif_stop_queue(netdev);  in ems_usb_start_xmit()
864 static int ems_usb_close(struct net_device *netdev)  in ems_usb_close()  argument
866 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_close()
871 	netif_stop_queue(netdev);  in ems_usb_close()
875 		netdev_warn(netdev, "couldn't stop device");  in ems_usb_close()
877 	close_candev(netdev);  in ems_usb_close()
901 static int ems_usb_set_mode(struct net_device *netdev, enum can_mode mode)  in ems_usb_set_mode()  argument
903 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_mode()
908 			netdev_warn(netdev, "couldn't start device");  in ems_usb_set_mode()
910 		if (netif_queue_stopped(netdev))  in ems_usb_set_mode()
911 			netif_wake_queue(netdev);  in ems_usb_set_mode()
921 static int ems_usb_set_bittiming(struct net_device *netdev)  in ems_usb_set_bittiming()  argument
923 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_bittiming()
933 	netdev_info(netdev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);  in ems_usb_set_bittiming()
977 	struct net_device *netdev;  in ems_usb_probe()  local
981 	netdev = alloc_candev(sizeof(struct ems_usb), MAX_TX_URBS);  in ems_usb_probe()
982 	if (!netdev) {  in ems_usb_probe()
987 	dev = netdev_priv(netdev);  in ems_usb_probe()
990 	dev->netdev = netdev;  in ems_usb_probe()
999 	netdev->netdev_ops = &ems_usb_netdev_ops;  in ems_usb_probe()
1001 	netdev->flags |= IFF_ECHO; /* we support local echo */  in ems_usb_probe()
1028 	SET_NETDEV_DEV(netdev, &intf->dev);  in ems_usb_probe()
1034 		netdev_err(netdev, "couldn't initialize controller: %d\n", err);  in ems_usb_probe()
1038 	err = register_candev(netdev);  in ems_usb_probe()
1040 		netdev_err(netdev, "couldn't register CAN device: %d\n", err);  in ems_usb_probe()
1056 	free_candev(netdev);  in ems_usb_probe()
1071 		unregister_netdev(dev->netdev);  in ems_usb_disconnect()
1072 		free_candev(dev->netdev);  in ems_usb_disconnect()