staging: comedi: remove thisboard macro in the pcmda12 driver

The 'thisboard' 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/pcmda12.c b/drivers/staging/comedi/drivers/pcmda12.c
index 4786148..f49c66a 100644 (file)
--- a/drivers/staging/comedi/drivers/pcmda12.c
+++ b/drivers/staging/comedi/drivers/pcmda12.c
@@ -80,11 +80,6 @@ static const struct comedi_lrange pcmda12_ranges = {
         }
 };
 
-/*
- * Useful for shorthand access to the particular board structure
- */
-#define thisboard ((const struct pcmda12_board *)dev->board_ptr)
-
 struct pcmda12_private {
 
        unsigned int ao_readback[CHANS];
@@ -167,6 +162,7 @@ static int ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
 static int pcmda12_attach(struct comedi_device *dev,
                          struct comedi_devconfig *it)
 {
+       const struct pcmda12_board *board = comedi_board(dev);
        struct comedi_subdevice *s;
        unsigned long iobase;
 
@@ -181,11 +177,7 @@ static int pcmda12_attach(struct comedi_device *dev,
        }
        dev->iobase = iobase;
 
-/*
- * Initialize dev->board_name.  Note that we can use the "thisboard"
- * macro now, since we just initialized it in the last line.
- */
-       dev->board_name = thisboard->name;
+       dev->board_name = board->name;
 
 /*
  * Allocate the private structure area.  alloc_private() is a