staging: comedi: usbduxsigma: tidy up receive_dux_commands()

			    &nsent, BULK_TIMEOUT);

}

static int receive_dux_commands(struct usbduxsigma_private *this_usbduxsub,

static int receive_dux_commands(struct usbduxsigma_private *devpriv,

				int command)

{

	int result = (-EFAULT);

	int nrec;

	int ret;

	int i;

	for (i = 0; i < RETRIES; i++) {

		result = usb_bulk_msg(this_usbduxsub->usbdev,

				      usb_rcvbulkpipe(this_usbduxsub->usbdev,

		ret = usb_bulk_msg(devpriv->usbdev,

				   usb_rcvbulkpipe(devpriv->usbdev,

						   COMMAND_IN_EP),

				      this_usbduxsub->insnBuffer, SIZEINSNBUF,

				   devpriv->insnBuffer, SIZEINSNBUF,

				   &nrec, BULK_TIMEOUT);

		if (result < 0) {

			dev_err(&this_usbduxsub->interface->dev, "comedi%d: "

				"insn: USB error %d "

				"while receiving DUX command"

				"\n", this_usbduxsub->comedidev->minor,

				result);

			return result;

		}

		if (this_usbduxsub->insnBuffer[0] == command)

			return result;

		if (ret < 0)

			return ret;

		if (devpriv->insnBuffer[0] == command)

			return 0;

	}

	/* this is only reached if the data has been requested a couple of

	 * times */

	/*

	 * This is only reached if the data has been requested a

	 * couple of times and the command was not received.

	 */

	return -EFAULT;

}