staging: comedi: addi_apci_16xx: cleanup addi_find_boardinfo()

This function was originally in the addi-data "common" code and
required using pointer math to access the boardinfo data using
the void * 'dev->driver->board_name'. Now that the function is
local to this driver we can access the boardinfo directly and
remove the pointer math.

Rename the function so it has namespace associated with this
driver.

Also, for aesthetic reasons, globally rename the local variable used
for the boardinfo pointer from 'this_board' to 'board',
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

@@ -26,19 +26,17 @@ static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
 	},
 };
 
-static const void *addi_find_boardinfo(struct comedi_device *dev,
+static const void *apci16xx_find_boardinfo(struct comedi_device *dev,
 					   struct pci_dev *pcidev)
 {
-	const void *p = dev->driver->board_name;
-	const struct apci16xx_boardinfo *this_board;
+	const struct apci16xx_boardinfo *board;
 	int i;
 
-	for (i = 0; i < dev->driver->num_names; i++) {
-		this_board = p;
-		if (this_board->vendor == pcidev->vendor &&
-		    this_board->device == pcidev->device)
-			return this_board;
-		p += dev->driver->offset;
+	for (i = 0; i < ARRAY_SIZE(apci16xx_boardtypes); i++) {
+		board = &apci16xx_boardtypes[i];
+		if (board->vendor == pcidev->vendor &&
+		    board->device == pcidev->device)
+			return board;
 	}
 	return NULL;
 }
@@ -47,16 +45,16 @@ static int apci16xx_auto_attach(struct comedi_device *dev,
 				unsigned long context_unused)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
-	const struct apci16xx_boardinfo *this_board;
+	const struct apci16xx_boardinfo *board;
 	struct addi_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;
 
-	this_board = addi_find_boardinfo(dev, pcidev);
-	if (!this_board)
+	board = apci16xx_find_boardinfo(dev, pcidev);
+	if (!board)
 		return -ENODEV;
-	dev->board_ptr = this_board;
-	dev->board_name = this_board->name;
+	dev->board_ptr = board;
+	dev->board_name = board->name;
 
 	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
 	if (!devpriv)
@@ -77,10 +75,10 @@ static int apci16xx_auto_attach(struct comedi_device *dev,
 	s = &dev->subdevices[0];
 	s->type		= COMEDI_SUBD_DIO;
 	s->subdev_flags	= SDF_WRITEABLE | SDF_READABLE;
-	s->n_chan	= this_board->n_chan;
+	s->n_chan	= board->n_chan;
 	s->maxdata	= 1;
 	s->io_bits	= 0;	/* all bits input */
-	s->len_chanlist	= this_board->n_chan;
+	s->len_chanlist	= board->n_chan;
 	s->range_table	= &range_digital;
 	s->insn_config	= i_APCI16XX_InsnConfigInitTTLIO;
 	s->insn_bits	= i_APCI16XX_InsnBitsReadTTLIO;