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Message-ID: <201205221722.48945.hartleys@visionengravers.com>
Date: Tue, 22 May 2012 17:22:48 -0700
From: H Hartley Sweeten <hartleys@...ionengravers.com>
To: Linux Kernel <linux-kernel@...r.kernel.org>
CC: <devel@...verdev.osuosl.org>, <abbotti@....co.uk>,
<fmhess@...rs.sourceforge.net>, <gregkh@...uxfoundation.org>
Subject: [PATCH] staging: comedi: remove this_board macro in the pcl818 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@...ionengravers.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: Mori Hess <fmhess@...rs.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index 1406c97..6c84b29 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -326,7 +326,6 @@ static const unsigned int muxonechan[] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0
};
#define devpriv ((struct pcl818_private *)dev->private)
-#define this_board ((const struct pcl818_board *)dev->board_ptr)
/*
==============================================================================
@@ -1264,6 +1263,7 @@ static int check_single_ended(unsigned int port)
static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
+ const struct pcl818_board *board = comedi_board(dev);
int err = 0;
int tmp, divisor1 = 0, divisor2 = 0;
@@ -1334,8 +1334,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
}
if (cmd->convert_src == TRIG_TIMER) {
- if (cmd->convert_arg < this_board->ns_min) {
- cmd->convert_arg = this_board->ns_min;
+ if (cmd->convert_arg < board->ns_min) {
+ cmd->convert_arg = board->ns_min;
err++;
}
} else { /* TRIG_EXT */
@@ -1371,8 +1371,8 @@ static int ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
i8253_cascade_ns_to_timer(devpriv->i8253_osc_base, &divisor1,
&divisor2, &cmd->convert_arg,
cmd->flags & TRIG_ROUND_MASK);
- if (cmd->convert_arg < this_board->ns_min)
- cmd->convert_arg = this_board->ns_min;
+ if (cmd->convert_arg < board->ns_min)
+ cmd->convert_arg = board->ns_min;
if (tmp != cmd->convert_arg)
err++;
}
@@ -1519,6 +1519,8 @@ static int pcl818_check(unsigned long iobase)
*/
static void pcl818_reset(struct comedi_device *dev)
{
+ const struct pcl818_board *board = comedi_board(dev);
+
if (devpriv->usefifo) { /* FIFO shutdown */
outb(0, dev->iobase + PCL818_FI_INTCLR);
outb(0, dev->iobase + PCL818_FI_FLUSH);
@@ -1537,7 +1539,7 @@ static void pcl818_reset(struct comedi_device *dev)
outb(0xb0, dev->iobase + PCL818_CTRCTL); /* Stop pacer */
outb(0x70, dev->iobase + PCL818_CTRCTL);
outb(0x30, dev->iobase + PCL818_CTRCTL);
- if (this_board->is_818) {
+ if (board->is_818) {
outb(0, dev->iobase + PCL818_RANGE);
} else {
outb(0, dev->iobase + PCL718_DA2_LO);
@@ -1636,6 +1638,7 @@ static int rtc_setfreq_irq(int freq)
static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
+ const struct pcl818_board *board = comedi_board(dev);
int ret;
unsigned long iobase;
unsigned int irq;
@@ -1651,9 +1654,10 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
iobase = it->options[0];
printk
("comedi%d: pcl818: board=%s, ioport=0x%03lx",
- dev->minor, this_board->name, iobase);
- devpriv->io_range = this_board->io_range;
- if ((this_board->fifo) && (it->options[2] == -1)) { /* we've board with FIFO and we want to use FIFO */
+ dev->minor, board->name, iobase);
+ devpriv->io_range = board->io_range;
+ if ((board->fifo) && (it->options[2] == -1)) {
+ /* we've board with FIFO and we want to use FIFO */
devpriv->io_range = PCLx1xFIFO_RANGE;
devpriv->usefifo = 1;
}
@@ -1669,14 +1673,14 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
return -EIO;
}
- /* set up some name stuff */
- dev->board_name = this_board->name;
+ dev->board_name = board->name;
+
/* grab our IRQ */
irq = 0;
- if (this_board->IRQbits != 0) { /* board support IRQ */
+ if (board->IRQbits != 0) { /* board support IRQ */
irq = it->options[1];
if (irq) { /* we want to use IRQ */
- if (((1 << irq) & this_board->IRQbits) == 0) {
+ if (((1 << irq) & board->IRQbits) == 0) {
printk
(", IRQ %u is out of allowed range, DISABLING IT",
irq);
@@ -1740,11 +1744,11 @@ no_rtc:
devpriv->dma = dma;
if ((devpriv->irq_free == 0) && (devpriv->dma_rtc == 0))
goto no_dma; /* if we haven't IRQ, we can't use DMA */
- if (this_board->DMAbits != 0) { /* board support DMA */
+ if (board->DMAbits != 0) { /* board support DMA */
dma = it->options[2];
if (dma < 1)
goto no_dma; /* DMA disabled */
- if (((1 << dma) & this_board->DMAbits) == 0) {
+ if (((1 << dma) & board->DMAbits) == 0) {
printk(KERN_ERR "DMA is out of allowed range, FAIL!\n");
return -EINVAL; /* Bad DMA */
}
@@ -1779,24 +1783,24 @@ no_dma:
return ret;
s = dev->subdevices + 0;
- if (!this_board->n_aichan_se) {
+ if (!board->n_aichan_se) {
s->type = COMEDI_SUBD_UNUSED;
} else {
s->type = COMEDI_SUBD_AI;
devpriv->sub_ai = s;
s->subdev_flags = SDF_READABLE;
if (check_single_ended(dev->iobase)) {
- s->n_chan = this_board->n_aichan_se;
+ s->n_chan = board->n_aichan_se;
s->subdev_flags |= SDF_COMMON | SDF_GROUND;
printk(", %dchans S.E. DAC", s->n_chan);
} else {
- s->n_chan = this_board->n_aichan_diff;
+ s->n_chan = board->n_aichan_diff;
s->subdev_flags |= SDF_DIFF;
printk(", %dchans DIFF DAC", s->n_chan);
}
- s->maxdata = this_board->ai_maxdata;
+ s->maxdata = board->ai_maxdata;
s->len_chanlist = s->n_chan;
- s->range_table = this_board->ai_range_type;
+ s->range_table = board->ai_range_type;
s->cancel = pcl818_ai_cancel;
s->insn_read = pcl818_ai_insn_read;
if ((irq) || (devpriv->dma_rtc)) {
@@ -1805,7 +1809,7 @@ no_dma:
s->do_cmdtest = ai_cmdtest;
s->do_cmd = ai_cmd;
}
- if (this_board->is_818) {
+ if (board->is_818) {
if ((it->options[4] == 1) || (it->options[4] == 10))
s->range_table = &range_pcl818l_h_ai; /* secondary range list jumper selectable */
} else {
@@ -1845,15 +1849,15 @@ no_dma:
}
s = dev->subdevices + 1;
- if (!this_board->n_aochan) {
+ if (!board->n_aochan) {
s->type = COMEDI_SUBD_UNUSED;
} else {
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
- s->n_chan = this_board->n_aochan;
- s->maxdata = this_board->ao_maxdata;
- s->len_chanlist = this_board->n_aochan;
- s->range_table = this_board->ao_range_type;
+ s->n_chan = board->n_aochan;
+ s->maxdata = board->ao_maxdata;
+ s->len_chanlist = board->n_aochan;
+ s->range_table = board->ao_range_type;
s->insn_read = pcl818_ao_insn_read;
s->insn_write = pcl818_ao_insn_write;
#ifdef unused
@@ -1864,7 +1868,7 @@ no_dma:
}
#endif
#endif
- if (this_board->is_818) {
+ if (board->is_818) {
if ((it->options[4] == 1) || (it->options[4] == 10))
s->range_table = &range_unipolar10;
if (it->options[4] == 2)
@@ -1878,27 +1882,27 @@ no_dma:
}
s = dev->subdevices + 2;
- if (!this_board->n_dichan) {
+ if (!board->n_dichan) {
s->type = COMEDI_SUBD_UNUSED;
} else {
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
- s->n_chan = this_board->n_dichan;
+ s->n_chan = board->n_dichan;
s->maxdata = 1;
- s->len_chanlist = this_board->n_dichan;
+ s->len_chanlist = board->n_dichan;
s->range_table = &range_digital;
s->insn_bits = pcl818_di_insn_bits;
}
s = dev->subdevices + 3;
- if (!this_board->n_dochan) {
+ if (!board->n_dochan) {
s->type = COMEDI_SUBD_UNUSED;
} else {
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
- s->n_chan = this_board->n_dochan;
+ s->n_chan = board->n_dochan;
s->maxdata = 1;
- s->len_chanlist = this_board->n_dochan;
+ s->len_chanlist = board->n_dochan;
s->range_table = &range_digital;
s->insn_bits = pcl818_do_insn_bits;
}
@@ -1910,9 +1914,9 @@ no_dma:
devpriv->i8253_osc_base = 1000;
/* max sampling speed */
- devpriv->ns_min = this_board->ns_min;
+ devpriv->ns_min = board->ns_min;
- if (!this_board->is_818) {
+ if (!board->is_818) {
if ((it->options[6] == 1) || (it->options[6] == 100))
devpriv->ns_min = 10000; /* extended PCL718 to 100kHz DAC */
}
--
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