For aesthetics, rename this function and tidy it up.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/adv_pci1710.c | 45 +++++++++++-----------------
1 file changed, 17 insertions(+), 28 deletions(-)
diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c
b/drivers/staging/comedi/drivers/adv_pci1710.c
index dca1bf2..ce91cec 100644
--- a/drivers/staging/comedi/drivers/adv_pci1710.c
+++ b/drivers/staging/comedi/drivers/adv_pci1710.c
@@ -466,41 +466,30 @@ static int pci171x_insn_read_ai(struct comedi_device *dev,
return ret ? ret : insn->n;
}
-/*
-==============================================================================
-*/
-static int pci171x_insn_write_ao(struct comedi_device *dev,
+static int pci171x_ao_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
+ struct comedi_insn *insn,
+ unsigned int *data)
{
struct pci1710_private *devpriv = dev->private;
- unsigned int val;
- int n, chan, range, ofs;
-
- chan = CR_CHAN(insn->chanspec);
- range = CR_RANGE(insn->chanspec);
- if (chan) {
- devpriv->da_ranges &= 0xfb;
- devpriv->da_ranges |= (range << 2);
- outw(devpriv->da_ranges, dev->iobase + PCI171x_DAREF);
- ofs = PCI171x_DA2;
- } else {
- devpriv->da_ranges &= 0xfe;
- devpriv->da_ranges |= range;
- outw(devpriv->da_ranges, dev->iobase + PCI171x_DAREF);
- ofs = PCI171x_DA1;
- }
- val = s->readback[chan];
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int range = CR_RANGE(insn->chanspec);
+ unsigned int reg = chan ? PCI171x_DA2 : PCI171x_DA1;
+ unsigned int val = s->readback[chan];
+ int i;
+
+ devpriv->da_ranges &= ~(1 << (chan << 1));
+ devpriv->da_ranges |= (range << (chan << 1));
+ outw(devpriv->da_ranges, dev->iobase + PCI171x_DAREF);
- for (n = 0; n < insn->n; n++) {
- val = data[n];
- outw(val, dev->iobase + ofs);
+ for (i = 0; i < insn->n; i++) {
+ val = data[i];
+ outw(val, dev->iobase + reg);
}
s->readback[chan] = val;
- return n;
-
+ return insn->n;
}
/*
@@ -1121,7 +1110,7 @@ static int pci1710_auto_attach(struct comedi_device *dev,
break;
default:
s->n_chan = 2;
- s->insn_write = pci171x_insn_write_ao;
+ s->insn_write = pci171x_ao_insn_write;
break;
}
--
2.0.3
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