242 	struct net_device *netdev;  member
265 	struct net_device *netdev = dev->netdev;  in ems_usb_read_interrupt_callback()  local
268 	if (!netif_device_present(netdev))  in ems_usb_read_interrupt_callback()
275 		    netif_queue_stopped(netdev))  in ems_usb_read_interrupt_callback()
276 			netif_wake_queue(netdev);  in ems_usb_read_interrupt_callback()
287 		netdev_info(netdev, "Rx interrupt aborted %d\n", urb->status);  in ems_usb_read_interrupt_callback()
294 		netif_device_detach(netdev);  in ems_usb_read_interrupt_callback()
296 		netdev_err(netdev, "failed resubmitting intr urb: %d\n", err);  in ems_usb_read_interrupt_callback()
304 	struct net_device_stats *stats = &dev->netdev->stats;  in ems_usb_rx_can_msg()
306 	skb = alloc_can_skb(dev->netdev, &cf);  in ems_usb_rx_can_msg()
335 	struct net_device_stats *stats = &dev->netdev->stats;  in ems_usb_rx_err()
337 	skb = alloc_can_err_skb(dev->netdev, &cf);  in ems_usb_rx_err()
349 			can_bus_off(dev->netdev);  in ems_usb_rx_err()
410 	struct net_device *netdev;  in ems_usb_read_bulk_callback()  local
413 	netdev = dev->netdev;  in ems_usb_read_bulk_callback()
415 	if (!netif_device_present(netdev))  in ems_usb_read_bulk_callback()
426 		netdev_info(netdev, "Rx URB aborted (%d)\n", urb->status);  in ems_usb_read_bulk_callback()
470 				netdev_err(netdev, "format error\n");  in ems_usb_read_bulk_callback()
484 		netif_device_detach(netdev);  in ems_usb_read_bulk_callback()
486 		netdev_err(netdev,  in ems_usb_read_bulk_callback()
497 	struct net_device *netdev;  in ems_usb_write_bulk_callback()  local
502 	netdev = dev->netdev;  in ems_usb_write_bulk_callback()
510 	if (!netif_device_present(netdev))  in ems_usb_write_bulk_callback()
514 		netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);  in ems_usb_write_bulk_callback()
516 	netif_trans_update(netdev);  in ems_usb_write_bulk_callback()
519 	netdev->stats.tx_packets++;  in ems_usb_write_bulk_callback()
520 	netdev->stats.tx_bytes += can_get_echo_skb(netdev, context->echo_index,  in ems_usb_write_bulk_callback()
581 	struct net_device *netdev = dev->netdev;  in ems_usb_start()  local
602 			netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start()
634 		netdev_warn(netdev, "couldn't setup read URBs\n");  in ems_usb_start()
640 		netdev_warn(netdev, "rx performance may be slow\n");  in ems_usb_start()
651 		netdev_warn(netdev, "intr URB submit failed: %d\n", err);  in ems_usb_start()
680 	netdev_warn(netdev, "couldn't submit control: %d\n", err);  in ems_usb_start()
704 static int ems_usb_open(struct net_device *netdev)  in ems_usb_open()  argument
706 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_open()
714 	err = open_candev(netdev);  in ems_usb_open()
722 			netif_device_detach(dev->netdev);  in ems_usb_open()
724 		netdev_warn(netdev, "couldn't start device: %d\n", err);  in ems_usb_open()
726 		close_candev(netdev);  in ems_usb_open()
732 	netif_start_queue(netdev);  in ems_usb_open()
737 static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *netdev)  in ems_usb_start_xmit()  argument
739 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_start_xmit()
741 	struct net_device_stats *stats = &netdev->stats;  in ems_usb_start_xmit()
750 	if (can_dev_dropped_skb(netdev, skb))  in ems_usb_start_xmit()
760 		netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start_xmit()
800 		netdev_warn(netdev, "couldn't find free context\n");  in ems_usb_start_xmit()
813 	can_put_echo_skb(skb, netdev, context->echo_index, 0);  in ems_usb_start_xmit()
819 		can_free_echo_skb(netdev, context->echo_index, NULL);  in ems_usb_start_xmit()
827 			netif_device_detach(netdev);  in ems_usb_start_xmit()
829 			netdev_warn(netdev, "failed tx_urb %d\n", err);  in ems_usb_start_xmit()
834 		netif_trans_update(netdev);  in ems_usb_start_xmit()
839 			netif_stop_queue(netdev);  in ems_usb_start_xmit()
858 static int ems_usb_close(struct net_device *netdev)  in ems_usb_close()  argument
860 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_close()
865 	netif_stop_queue(netdev);  in ems_usb_close()
869 		netdev_warn(netdev, "couldn't stop device");  in ems_usb_close()
871 	close_candev(netdev);  in ems_usb_close()
899 static int ems_usb_set_mode(struct net_device *netdev, enum can_mode mode)  in ems_usb_set_mode()  argument
901 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_mode()
906 			netdev_warn(netdev, "couldn't start device");  in ems_usb_set_mode()
908 		if (netif_queue_stopped(netdev))  in ems_usb_set_mode()
909 			netif_wake_queue(netdev);  in ems_usb_set_mode()
919 static int ems_usb_set_bittiming(struct net_device *netdev)  in ems_usb_set_bittiming()  argument
921 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_bittiming()
931 	netdev_info(netdev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);  in ems_usb_set_bittiming()
975 	struct net_device *netdev;  in ems_usb_probe()  local
979 	netdev = alloc_candev(sizeof(struct ems_usb), MAX_TX_URBS);  in ems_usb_probe()
980 	if (!netdev) {  in ems_usb_probe()
985 	dev = netdev_priv(netdev);  in ems_usb_probe()
988 	dev->netdev = netdev;  in ems_usb_probe()
997 	netdev->netdev_ops = &ems_usb_netdev_ops;  in ems_usb_probe()
998 	netdev->ethtool_ops = &ems_usb_ethtool_ops;  in ems_usb_probe()
1000 	netdev->flags |= IFF_ECHO; /* we support local echo */  in ems_usb_probe()
1025 	SET_NETDEV_DEV(netdev, &intf->dev);  in ems_usb_probe()
1031 		netdev_err(netdev, "couldn't initialize controller: %d\n", err);  in ems_usb_probe()
1035 	err = register_candev(netdev);  in ems_usb_probe()
1037 		netdev_err(netdev, "couldn't register CAN device: %d\n", err);  in ems_usb_probe()
1053 	free_candev(netdev);  in ems_usb_probe()
1068 		unregister_netdev(dev->netdev);  in ems_usb_disconnect()
1077 		free_candev(dev->netdev);  in ems_usb_disconnect()