staging: comedi: remove this_board macro in the pcl711 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/pcl711.c b/drivers/staging/comedi/drivers/pcl711.c
index 2e7753f..e943b52 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl711.c
+++ b/drivers/staging/comedi/drivers/pcl711.c
@@ -148,8 +148,6 @@ struct pcl711_board {
        const struct comedi_lrange *ai_range_type;
 };
 
-#define this_board ((const struct pcl711_board *)dev->board_ptr)
-
 struct pcl711_private {
 
        int board;
@@ -169,6 +167,7 @@ static irqreturn_t pcl711_interrupt(int irq, void *d)
        int lo, hi;
        int data;
        struct comedi_device *dev = d;
+       const struct pcl711_board *board = comedi_board(dev);
        struct comedi_subdevice *s = dev->subdevices + 0;
 
        if (!dev->attached) {
@@ -184,7 +183,7 @@ static irqreturn_t pcl711_interrupt(int irq, void *d)
 
        /* FIXME! Nothing else sets ntrig! */
        if (!(--devpriv->ntrig)) {
-               if (this_board->is_8112)
+               if (board->is_8112)
                        outb(1, dev->iobase + PCL711_MODE);
                else
                        outb(0, dev->iobase + PCL711_MODE);
@@ -197,13 +196,14 @@ static irqreturn_t pcl711_interrupt(int irq, void *d)
 
 static void pcl711_set_changain(struct comedi_device *dev, int chan)
 {
+       const struct pcl711_board *board = comedi_board(dev);
        int chan_register;
 
        outb(CR_RANGE(chan), dev->iobase + PCL711_GAIN);
 
        chan_register = CR_CHAN(chan);
 
-       if (this_board->is_8112) {
+       if (board->is_8112) {
 
                /*
                 *  Set the correct channel.  The two channel banks are switched
@@ -225,6 +225,7 @@ static void pcl711_set_changain(struct comedi_device *dev, int chan)
 static int pcl711_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
                          struct comedi_insn *insn, unsigned int *data)
 {
+       const struct pcl711_board *board = comedi_board(dev);
        int i, n;
        int hi, lo;
 
@@ -237,7 +238,7 @@ static int pcl711_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
                 */
                outb(1, dev->iobase + PCL711_MODE);
 
-               if (!this_board->is_8112)
+               if (!board->is_8112)
                        outb(0, dev->iobase + PCL711_SOFTTRIG);
 
                i = PCL711_TIMEOUT;
@@ -481,6 +482,7 @@ static int pcl711_do_insn_bits(struct comedi_device *dev,
 
 static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
+       const struct pcl711_board *board = comedi_board(dev);
        int ret;
        unsigned long iobase;
        unsigned int irq;
@@ -498,12 +500,11 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
        /* there should be a sanity check here */
 
-       /* set up some name stuff */
-       dev->board_name = this_board->name;
+       dev->board_name = board->name;
 
        /* grab our IRQ */
        irq = it->options[1];
-       if (irq > this_board->maxirq) {
+       if (irq > board->maxirq) {
                printk(KERN_ERR "irq out of range\n");
                return -EINVAL;
        }
@@ -529,10 +530,10 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        /* AI subdevice */
        s->type = COMEDI_SUBD_AI;
        s->subdev_flags = SDF_READABLE | SDF_GROUND;
-       s->n_chan = this_board->n_aichan;
+       s->n_chan = board->n_aichan;
        s->maxdata = 0xfff;
        s->len_chanlist = 1;
-       s->range_table = this_board->ai_range_type;
+       s->range_table = board->ai_range_type;
        s->insn_read = pcl711_ai_insn;
        if (irq) {
                dev->read_subdev = s;
@@ -545,7 +546,7 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
        /* AO subdevice */
        s->type = COMEDI_SUBD_AO;
        s->subdev_flags = SDF_WRITABLE;
-       s->n_chan = this_board->n_aochan;
+       s->n_chan = board->n_aochan;
        s->maxdata = 0xfff;
        s->len_chanlist = 1;
        s->range_table = &range_bipolar5;
@@ -577,7 +578,7 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
           this is the "base value" for the mode register, which is
           used for the irq on the PCL711
         */
-       if (this_board->is_pcl711b)
+       if (board->is_pcl711b)
                devpriv->mode = (dev->irq << 4);
 
        /* clear DAC */