staging: comedi: ni_pcidio: factor board reset out of attach

Factor the code that resets the board and disables the interrupts out
of the attach.

Move the reset so it happens before the subdevices are initialized.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: NIan Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/ni_pcidio.c

@@ -949,6 +949,19 @@ static int pci_6534_upload_firmware(struct comedi_device *dev)
 	return ret;
 }
 
+static void nidio_reset_board(struct comedi_device *dev)
+{
+	struct nidio96_private *devpriv = dev->private;
+	void __iomem *daq_mmio = devpriv->mite->daq_io_addr;
+
+	writel(0, daq_mmio + Port_IO(0));
+	writel(0, daq_mmio + Port_Pin_Directions(0));
+	writel(0, daq_mmio + Port_Pin_Mask(0));
+
+	/* disable interrupts on board */
+	writeb(0, daq_mmio + Master_DMA_And_Interrupt_Control);
+}
+
 static int nidio_auto_attach(struct comedi_device *dev,
 			     unsigned long context)
 {
@@ -996,6 +1009,8 @@ static int nidio_auto_attach(struct comedi_device *dev,
 			return ret;
 	}
 
+	nidio_reset_board(dev);
+
 	ret = comedi_alloc_subdevices(dev, 1);
 	if (ret)
 		return ret;
@@ -1023,15 +1038,6 @@ static int nidio_auto_attach(struct comedi_device *dev,
 	s->async_dma_dir = DMA_BIDIRECTIONAL;
 	s->poll = &ni_pcidio_poll;
 
-	writel(0, devpriv->mite->daq_io_addr + Port_IO(0));
-	writel(0, devpriv->mite->daq_io_addr + Port_Pin_Directions(0));
-	writel(0, devpriv->mite->daq_io_addr + Port_Pin_Mask(0));
-
-	/* disable interrupts on board */
-	writeb(0x00,
-		devpriv->mite->daq_io_addr +
-		Master_DMA_And_Interrupt_Control);
-
 	irq = mite_irq(devpriv->mite);
 	if (irq) {
 		ret = request_irq(irq, nidio_interrupt, IRQF_SHARED,