staging: comedi: ni_pcidio: use the pci id_table 'driver_data'

Create an enum to the boardinfo and pass that enum in the pci_driver
id_table as the driver_data.

Change the macro used to fill in the device table from PCI_DEVICE() to
PCI_VDEVICE(). This allows passing the enum as the next field.

This allows removing the 'dev_id' data from the boardinfo as well the
search function that was used to locate the boardinfo for the PCI device.
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/ni_pcidio.c

@@ -280,21 +280,25 @@ enum FPGA_Control_Bits {
 static int ni_pcidio_cancel(struct comedi_device *dev,
 			    struct comedi_subdevice *s);
 
+enum nidio_boardid {
+	BOARD_PCIDIO_32HS,
+	BOARD_PXI6533,
+	BOARD_PCI6534,
+};
+
 struct nidio_board {
-	int dev_id;
 	const char *name;
 	unsigned int uses_firmware:1;
 };
 
 static const struct nidio_board nidio_boards[] = {
-	{
-		.dev_id		= 0x1150,
+	[BOARD_PCIDIO_32HS] = {
 		.name		= "pci-dio-32hs",
-	}, {
-		.dev_id		= 0x1320,
+	},
+	[BOARD_PXI6533] = {
 		.name		= "pxi-6533",
-	}, {
-		.dev_id		= 0x12b0,
+	},
+	[BOARD_PCI6534] = {
 		.name		= "pci-6534",
 		.uses_firmware	= 1,
 	},
@@ -1094,29 +1098,23 @@ static int pci_6534_upload_firmware(struct comedi_device *dev)
 	return ret;
 }
 
-static const struct nidio_board *
-nidio_find_boardinfo(struct pci_dev *pcidev)
-{
-	unsigned int dev_id = pcidev->device;
-	unsigned int n;
-
-	for (n = 0; n < ARRAY_SIZE(nidio_boards); n++) {
-		const struct nidio_board *board = &nidio_boards[n];
-		if (board->dev_id == dev_id)
-			return board;
-	}
-	return NULL;
-}
-
 static int nidio_auto_attach(struct comedi_device *dev,
-				       unsigned long context_unused)
+			     unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+	const struct nidio_board *board = NULL;
 	struct nidio96_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;
 	unsigned int irq;
 
+	if (context < ARRAY_SIZE(nidio_boards))
+		board = &nidio_boards[context];
+	if (!board)
+		return -ENODEV;
+	dev->board_ptr = board;
+	dev->board_name = this_board->name;
+
 	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
 	if (!devpriv)
 		return -ENOMEM;
@@ -1124,9 +1122,6 @@ static int nidio_auto_attach(struct comedi_device *dev,
 
 	spin_lock_init(&devpriv->mite_channel_lock);
 
-	dev->board_ptr = nidio_find_boardinfo(pcidev);
-	if (!dev->board_ptr)
-		return -ENODEV;
 	devpriv->mite = mite_alloc(pcidev);
 	if (!devpriv->mite)
 		return -ENOMEM;
@@ -1141,7 +1136,6 @@ static int nidio_auto_attach(struct comedi_device *dev,
 	if (devpriv->di_mite_ring == NULL)
 		return -ENOMEM;
 
-	dev->board_name = this_board->name;
 	irq = mite_irq(devpriv->mite);
 	if (this_board->uses_firmware) {
 		ret = pci_6534_upload_firmware(dev);
@@ -1227,9 +1221,9 @@ static int ni_pcidio_pci_probe(struct pci_dev *dev,
 }
 
 static DEFINE_PCI_DEVICE_TABLE(ni_pcidio_pci_table) = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_NI, 0x1150) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_NI, 0x1320) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_NI, 0x12b0) },
+	{ PCI_VDEVICE(NI, 0x1150), BOARD_PCIDIO_32HS },
+	{ PCI_VDEVICE(NI, 0x12b0), BOARD_PCI6534 },
+	{ PCI_VDEVICE(NI, 0x1320), BOARD_PXI6533 },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(pci, ni_pcidio_pci_table);