static void gnss_usb_rx_complete()

in usb.c [33:68]

• 33 lines of code
• 11 McCabe index (conditional complexity)

static void gnss_usb_rx_complete(struct urb *urb)
{
	struct gnss_usb *gusb = urb->context;
	struct gnss_device *gdev = gusb->gdev;
	int status = urb->status;
	int len;
	int ret;

	switch (status) {
	case 0:
		break;
	case -ENOENT:
	case -ECONNRESET:
	case -ESHUTDOWN:
		dev_dbg(&gdev->dev, "urb stopped: %d\n", status);
		return;
	case -EPIPE:
		dev_err(&gdev->dev, "urb stopped: %d\n", status);
		return;
	default:
		dev_dbg(&gdev->dev, "nonzero urb status: %d\n", status);
		goto resubmit;
	}

	len = urb->actual_length;
	if (len == 0)
		goto resubmit;

	ret = gnss_insert_raw(gdev, urb->transfer_buffer, len);
	if (ret < len)
		dev_dbg(&gdev->dev, "dropped %d bytes\n", len - ret);
resubmit:
	ret = usb_submit_urb(urb, GFP_ATOMIC);
	if (ret && ret != -EPERM && ret != -ENODEV)
		dev_err(&gdev->dev, "failed to resubmit urb: %d\n", ret);
}