staging: comedi: remove this_board macro in the pcl730 driver

The 'this_board' macro depends on having a local variable with
a magic name. The CodingStyle document suggests not doing this
to avoid confusion. Remove the macro and use the comedi_board()
inline helper to get the dev->board_ptr information.

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

diff --git a/drivers/staging/comedi/drivers/pcl730.c b/drivers/staging/comedi/drivers/pcl730.c
index e11704a..02a4386 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl730.c
+++ b/drivers/staging/comedi/drivers/pcl730.c
@@ -32,8 +32,6 @@ struct pcl730_board {
        unsigned int io_range;  /*  len of I/O space */
 };
 
-#define this_board ((const struct pcl730_board *)dev->board_ptr)
-
 static int pcl730_do_insn(struct comedi_device *dev, struct comedi_subdevice *s,
                          struct comedi_insn *insn, unsigned int *data)
 {
@@ -70,19 +68,20 @@ static int pcl730_di_insn(struct comedi_device *dev, struct comedi_subdevice *s,
 
 static int pcl730_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
+       const struct pcl730_board *board = comedi_board(dev);
        struct comedi_subdevice *s;
        unsigned long iobase;
        unsigned int iorange;
 
        iobase = it->options[0];
-       iorange = this_board->io_range;
+       iorange = board->io_range;
        printk(KERN_INFO "comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
-              this_board->name, iobase);
+              board->name, iobase);
        if (!request_region(iobase, iorange, "pcl730")) {
                printk("I/O port conflict\n");
                return -EIO;
        }
-       dev->board_name = this_board->name;
+       dev->board_name = board->name;
        dev->iobase = iobase;
        dev->irq = 0;
 
@@ -136,8 +135,10 @@ static int pcl730_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
 static void pcl730_detach(struct comedi_device *dev)
 {
+       const struct pcl730_board *board = comedi_board(dev);
+
        if (dev->iobase)
-               release_region(dev->iobase, this_board->io_range);
+               release_region(dev->iobase, board->io_range);
 }
 
 static const struct pcl730_board boardtypes[] = {