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()
348 			can_bus_off(dev->netdev);  in ems_usb_rx_err()
418 	struct net_device *netdev;  in ems_usb_read_bulk_callback()  local
421 	netdev = dev->netdev;  in ems_usb_read_bulk_callback()
423 	if (!netif_device_present(netdev))  in ems_usb_read_bulk_callback()
434 		netdev_info(netdev, "Rx URB aborted (%d)\n", urb->status);  in ems_usb_read_bulk_callback()
449 				netdev_err(netdev, "format error\n");  in ems_usb_read_bulk_callback()
483 				netdev_err(netdev, "format error\n");  in ems_usb_read_bulk_callback()
503 		netif_device_detach(netdev);  in ems_usb_read_bulk_callback()
505 		netdev_err(netdev,  in ems_usb_read_bulk_callback()
516 	struct net_device *netdev;  in ems_usb_write_bulk_callback()  local
521 	netdev = dev->netdev;  in ems_usb_write_bulk_callback()
529 	if (!netif_device_present(netdev))  in ems_usb_write_bulk_callback()
533 		netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);  in ems_usb_write_bulk_callback()
535 	netif_trans_update(netdev);  in ems_usb_write_bulk_callback()
538 	netdev->stats.tx_packets++;  in ems_usb_write_bulk_callback()
539 	netdev->stats.tx_bytes += can_get_echo_skb(netdev, context->echo_index,  in ems_usb_write_bulk_callback()
600 	struct net_device *netdev = dev->netdev;  in ems_usb_start()  local
621 			netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start()
653 		netdev_warn(netdev, "couldn't setup read URBs\n");  in ems_usb_start()
659 		netdev_warn(netdev, "rx performance may be slow\n");  in ems_usb_start()
670 		netdev_warn(netdev, "intr URB submit failed: %d\n", err);  in ems_usb_start()
699 	netdev_warn(netdev, "couldn't submit control: %d\n", err);  in ems_usb_start()
723 static int ems_usb_open(struct net_device *netdev)  in ems_usb_open()  argument
725 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_open()
733 	err = open_candev(netdev);  in ems_usb_open()
741 			netif_device_detach(dev->netdev);  in ems_usb_open()
743 		netdev_warn(netdev, "couldn't start device: %d\n", err);  in ems_usb_open()
745 		close_candev(netdev);  in ems_usb_open()
751 	netif_start_queue(netdev);  in ems_usb_open()
756 static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *netdev)  in ems_usb_start_xmit()  argument
758 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_start_xmit()
760 	struct net_device_stats *stats = &netdev->stats;  in ems_usb_start_xmit()
769 	if (can_dev_dropped_skb(netdev, skb))  in ems_usb_start_xmit()
779 		netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start_xmit()
819 		netdev_warn(netdev, "couldn't find free context\n");  in ems_usb_start_xmit()
832 	can_put_echo_skb(skb, netdev, context->echo_index, 0);  in ems_usb_start_xmit()
838 		can_free_echo_skb(netdev, context->echo_index, NULL);  in ems_usb_start_xmit()
846 			netif_device_detach(netdev);  in ems_usb_start_xmit()
848 			netdev_warn(netdev, "failed tx_urb %d\n", err);  in ems_usb_start_xmit()
853 		netif_trans_update(netdev);  in ems_usb_start_xmit()
858 			netif_stop_queue(netdev);  in ems_usb_start_xmit()
877 static int ems_usb_close(struct net_device *netdev)  in ems_usb_close()  argument
879 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_close()
884 	netif_stop_queue(netdev);  in ems_usb_close()
888 		netdev_warn(netdev, "couldn't stop device");  in ems_usb_close()
890 	close_candev(netdev);  in ems_usb_close()
917 static int ems_usb_set_mode(struct net_device *netdev, enum can_mode mode)  in ems_usb_set_mode()  argument
919 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_mode()
924 			netdev_warn(netdev, "couldn't start device");  in ems_usb_set_mode()
926 		if (netif_queue_stopped(netdev))  in ems_usb_set_mode()
927 			netif_wake_queue(netdev);  in ems_usb_set_mode()
937 static int ems_usb_set_bittiming(struct net_device *netdev)  in ems_usb_set_bittiming()  argument
939 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_bittiming()
949 	netdev_info(netdev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);  in ems_usb_set_bittiming()
993 	struct net_device *netdev;  in ems_usb_probe()  local
997 	netdev = alloc_candev(sizeof(struct ems_usb), MAX_TX_URBS);  in ems_usb_probe()
998 	if (!netdev) {  in ems_usb_probe()
1003 	dev = netdev_priv(netdev);  in ems_usb_probe()
1006 	dev->netdev = netdev;  in ems_usb_probe()
1015 	netdev->netdev_ops = &ems_usb_netdev_ops;  in ems_usb_probe()
1016 	netdev->ethtool_ops = &ems_usb_ethtool_ops;  in ems_usb_probe()
1018 	netdev->flags |= IFF_ECHO; /* we support local echo */  in ems_usb_probe()
1043 	SET_NETDEV_DEV(netdev, &intf->dev);  in ems_usb_probe()
1049 		netdev_err(netdev, "couldn't initialize controller: %d\n", err);  in ems_usb_probe()
1053 	err = register_candev(netdev);  in ems_usb_probe()
1055 		netdev_err(netdev, "couldn't register CAN device: %d\n", err);  in ems_usb_probe()
1071 	free_candev(netdev);  in ems_usb_probe()
1086 		unregister_netdev(dev->netdev);  in ems_usb_disconnect()
1095 		free_candev(dev->netdev);  in ems_usb_disconnect()