staging: comedi: addi_apci_16xx: simplify PCI bar reading

The boards supported by this driver do not have an eeprom. Knowing
this information allows simplifying the code that reads the PCI
bars to get the iobase addresses.

The only 'iobase' actually used by this driver is found in PCI
bar 0. Don't bother reading the other PCI bars.

Also, since 'dw_AiBase' is not ioremap'ed we can remove the check
and iounmap in the detach.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/addi_apci_16xx.c

@@ -14,8 +14,6 @@ static const struct addi_board apci16xx_boardtypes[] = {
 		.pc_DriverName		= "apci1648",
 		.i_VendorId		= PCI_VENDOR_ID_ADDIDATA,
 		.i_DeviceId		= 0x1009,
-		.i_IorangeBase0		= 128,
-		.i_PCIEeprom		= ADDIDATA_NO_EEPROM,
 		.i_NbrTTLChannel	= 48,
 		.ttl_config		= i_APCI16XX_InsnConfigInitTTLIO,
 		.ttl_bits		= i_APCI16XX_InsnBitsReadTTLIO,
@@ -25,8 +23,6 @@ static const struct addi_board apci16xx_boardtypes[] = {
 		.pc_DriverName		= "apci1696",
 		.i_VendorId		= PCI_VENDOR_ID_ADDIDATA,
 		.i_DeviceId		= 0x100A,
-		.i_IorangeBase0		= 128,
-		.i_PCIEeprom		= ADDIDATA_NO_EEPROM,
 		.i_NbrTTLChannel	= 96,
 		.ttl_config		= i_APCI16XX_InsnConfigInitTTLIO,
 		.ttl_bits		= i_APCI16XX_InsnBitsReadTTLIO,
@@ -76,25 +72,8 @@ static int apci16xx_auto_attach(struct comedi_device *dev,
 	if (ret)
 		return ret;
 
-	if (!this_board->pc_EepromChip ||
-	    strcmp(this_board->pc_EepromChip, ADDIDATA_9054)) {
-		/* board does not have an eeprom or is not ADDIDATA_9054 */
-		if (this_board->i_IorangeBase1)
-			dev->iobase = pci_resource_start(pcidev, 1);
-		else
-			dev->iobase = pci_resource_start(pcidev, 0);
-
-		devpriv->iobase = dev->iobase;
-		devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 0);
-		devpriv->i_IobaseAddon = pci_resource_start(pcidev, 2);
-	} else {
-		/* board has an ADDIDATA_9054 eeprom */
-		dev->iobase = pci_resource_start(pcidev, 2);
-		devpriv->iobase = pci_resource_start(pcidev, 2);
-		devpriv->dw_AiBase = ioremap(pci_resource_start(pcidev, 3),
-					     this_board->i_IorangeBase3);
-	}
-	devpriv->i_IobaseReserved = pci_resource_start(pcidev, 3);
+	dev->iobase = pci_resource_start(pcidev, 0);
+	devpriv->iobase = dev->iobase;
 
 	/* Initialize parameters that can be overridden in EEPROM */
 	devpriv->s_EeParameters.i_NbrAiChannel = this_board->i_NbrAiChannel;
@@ -165,12 +144,7 @@ static int apci16xx_auto_attach(struct comedi_device *dev,
 static void apci16xx_detach(struct comedi_device *dev)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
-	struct addi_private *devpriv = dev->private;
 
-	if (devpriv) {
-		if (devpriv->dw_AiBase)
-			iounmap(devpriv->dw_AiBase);
-	}
 	if (pcidev) {
 		if (dev->iobase)
 			comedi_pci_disable(pcidev);