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()
345 	struct net_device_stats *stats = &dev->netdev->stats;  in ems_usb_rx_err()
347 	skb = alloc_can_err_skb(dev->netdev, &cf);  in ems_usb_rx_err()
359 			can_bus_off(dev->netdev);  in ems_usb_rx_err()
423 	struct net_device *netdev;  in ems_usb_read_bulk_callback()  local
426 	netdev = dev->netdev;  in ems_usb_read_bulk_callback()
428 	if (!netif_device_present(netdev))  in ems_usb_read_bulk_callback()
439 		netdev_info(netdev, "Rx URB aborted (%d)\n", urb->status);  in ems_usb_read_bulk_callback()
483 				netdev_err(netdev, "format error\n");  in ems_usb_read_bulk_callback()
497 		netif_device_detach(netdev);  in ems_usb_read_bulk_callback()
499 		netdev_err(netdev,  in ems_usb_read_bulk_callback()
510 	struct net_device *netdev;  in ems_usb_write_bulk_callback()  local
515 	netdev = dev->netdev;  in ems_usb_write_bulk_callback()
523 	if (!netif_device_present(netdev))  in ems_usb_write_bulk_callback()
527 		netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);  in ems_usb_write_bulk_callback()
529 	netdev->trans_start = jiffies;  in ems_usb_write_bulk_callback()
532 	netdev->stats.tx_packets++;  in ems_usb_write_bulk_callback()
533 	netdev->stats.tx_bytes += context->dlc;  in ems_usb_write_bulk_callback()
535 	can_get_echo_skb(netdev, context->echo_index);  in ems_usb_write_bulk_callback()
595 	struct net_device *netdev = dev->netdev;  in ems_usb_start()  local
608 			netdev_err(netdev, "No memory left for URBs\n");  in ems_usb_start()
616 			netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start()
643 		netdev_warn(netdev, "couldn't setup read URBs\n");  in ems_usb_start()
649 		netdev_warn(netdev, "rx performance may be slow\n");  in ems_usb_start()
660 		netdev_warn(netdev, "intr URB submit failed: %d\n", err);  in ems_usb_start()
689 	netdev_warn(netdev, "couldn't submit control: %d\n", err);  in ems_usb_start()
709 static int ems_usb_open(struct net_device *netdev)  in ems_usb_open()  argument
711 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_open()
719 	err = open_candev(netdev);  in ems_usb_open()
727 			netif_device_detach(dev->netdev);  in ems_usb_open()
729 		netdev_warn(netdev, "couldn't start device: %d\n", err);  in ems_usb_open()
731 		close_candev(netdev);  in ems_usb_open()
737 	netif_start_queue(netdev);  in ems_usb_open()
742 static netdev_tx_t ems_usb_start_xmit(struct sk_buff *skb, struct net_device *netdev)  in ems_usb_start_xmit()  argument
744 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_start_xmit()
746 	struct net_device_stats *stats = &netdev->stats;  in ems_usb_start_xmit()
755 	if (can_dropped_invalid_skb(netdev, skb))  in ems_usb_start_xmit()
761 		netdev_err(netdev, "No memory left for URBs\n");  in ems_usb_start_xmit()
767 		netdev_err(netdev, "No memory left for USB buffer\n");  in ems_usb_start_xmit()
807 		netdev_warn(netdev, "couldn't find free context\n");  in ems_usb_start_xmit()
821 	can_put_echo_skb(skb, netdev, context->echo_index);  in ems_usb_start_xmit()
827 		can_free_echo_skb(netdev, context->echo_index);  in ems_usb_start_xmit()
836 			netif_device_detach(netdev);  in ems_usb_start_xmit()
838 			netdev_warn(netdev, "failed tx_urb %d\n", err);  in ems_usb_start_xmit()
843 		netdev->trans_start = jiffies;  in ems_usb_start_xmit()
848 			netif_stop_queue(netdev);  in ems_usb_start_xmit()
867 static int ems_usb_close(struct net_device *netdev)  in ems_usb_close()  argument
869 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_close()
874 	netif_stop_queue(netdev);  in ems_usb_close()
878 		netdev_warn(netdev, "couldn't stop device");  in ems_usb_close()
880 	close_candev(netdev);  in ems_usb_close()
904 static int ems_usb_set_mode(struct net_device *netdev, enum can_mode mode)  in ems_usb_set_mode()  argument
906 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_mode()
911 			netdev_warn(netdev, "couldn't start device");  in ems_usb_set_mode()
913 		if (netif_queue_stopped(netdev))  in ems_usb_set_mode()
914 			netif_wake_queue(netdev);  in ems_usb_set_mode()
924 static int ems_usb_set_bittiming(struct net_device *netdev)  in ems_usb_set_bittiming()  argument
926 	struct ems_usb *dev = netdev_priv(netdev);  in ems_usb_set_bittiming()
936 	netdev_info(netdev, "setting BTR0=0x%02x BTR1=0x%02x\n", btr0, btr1);  in ems_usb_set_bittiming()
980 	struct net_device *netdev;  in ems_usb_probe()  local
984 	netdev = alloc_candev(sizeof(struct ems_usb), MAX_TX_URBS);  in ems_usb_probe()
985 	if (!netdev) {  in ems_usb_probe()
990 	dev = netdev_priv(netdev);  in ems_usb_probe()
993 	dev->netdev = netdev;  in ems_usb_probe()
1002 	netdev->netdev_ops = &ems_usb_netdev_ops;  in ems_usb_probe()
1004 	netdev->flags |= IFF_ECHO; /* we support local echo */  in ems_usb_probe()
1031 	SET_NETDEV_DEV(netdev, &intf->dev);  in ems_usb_probe()
1037 		netdev_err(netdev, "couldn't initialize controller: %d\n", err);  in ems_usb_probe()
1041 	err = register_candev(netdev);  in ems_usb_probe()
1043 		netdev_err(netdev, "couldn't register CAN device: %d\n", err);  in ems_usb_probe()
1059 	free_candev(netdev);  in ems_usb_probe()
1074 		unregister_netdev(dev->netdev);  in ems_usb_disconnect()
1075 		free_candev(dev->netdev);  in ems_usb_disconnect()