can/usb/ems_usb.c

250 	struct urb *intr_urb;
262 static void ems_usb_read_interrupt_callback(struct urb *urb)
264 	struct ems_usb *dev = urb->context;
271 	switch (urb->status) {
287 		netdev_info(netdev, "Rx interrupt aborted %d\n", urb->status);
291 	err = usb_submit_urb(urb, GFP_ATOMIC);
296 		netdev_err(netdev, "failed resubmitting intr urb: %d\n", err);
405  * callback for bulk IN urb
407 static void ems_usb_read_bulk_callback(struct urb *urb)
409 	struct ems_usb *dev = urb->context;
418 	switch (urb->status) {
426 		netdev_info(netdev, "Rx URB aborted (%d)\n", urb->status);
430 	if (urb->actual_length > CPC_HEADER_SIZE) {
432 		u8 *ibuf = urb->transfer_buffer;
469 			if (start > urb->transfer_buffer_length) {
477 	usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, 2),
478 			  urb->transfer_buffer, RX_BUFFER_SIZE,
481 	retval = usb_submit_urb(urb, GFP_ATOMIC);
487 			   "failed resubmitting read bulk urb: %d\n", retval);
491  * callback for bulk IN urb
493 static void ems_usb_write_bulk_callback(struct urb *urb)
495 	struct ems_tx_urb_context *context = urb->context;
505 	usb_free_coherent(urb->dev, urb->transfer_buffer_length,
506 			  urb->transfer_buffer, urb->transfer_dma);
513 	if (urb->status)
514 		netdev_info(netdev, "Tx URB aborted (%d)\n", urb->status);
588 		struct urb *urb = NULL;
593 		urb = usb_alloc_urb(0, GFP_KERNEL);
594 		if (!urb) {
603 			usb_free_urb(urb);
608 		urb->transfer_dma = buf_dma;
610 		usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, 2),
613 		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
614 		usb_anchor_urb(urb, &dev->rx_submitted);
616 		err = usb_submit_urb(urb, GFP_KERNEL);
618 			usb_unanchor_urb(urb);
620 					  urb->transfer_dma);
621 			usb_free_urb(urb);
629 		usb_free_urb(urb);
744 	struct urb *urb;
754 	urb = usb_alloc_urb(0, GFP_ATOMIC);
755 	if (!urb)
758 	buf = usb_alloc_coherent(dev->udev, size, GFP_ATOMIC, &urb->transfer_dma);
761 		usb_free_urb(urb);
797 		usb_free_coherent(dev->udev, size, buf, urb->transfer_dma);
798 		usb_free_urb(urb);
808 	usb_fill_bulk_urb(urb, dev->udev, usb_sndbulkpipe(dev->udev, 2), buf,
810 	urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
811 	usb_anchor_urb(urb, &dev->tx_submitted);
817 	err = usb_submit_urb(urb, GFP_ATOMIC);
821 		usb_unanchor_urb(urb);
822 		usb_free_coherent(dev->udev, size, buf, urb->transfer_dma);
847 	usb_free_urb(urb);