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staging: comedi: rti802: tidy up rti802_ao_insn_read()

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To clarify the function a bit, add a local variable for the 'chan'
that is being read and change the final return to 'insn->n'.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-03-13 15:48:38 -07:00 committed by Greg Kroah-Hartman
parent df8f09bb44
commit c0c6ae260a
1 changed files with 5 additions and 3 deletions
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8
drivers/staging/comedi/drivers/rti802.c
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@ -49,15 +49,17 @@ struct rti802_private {
static int rti802_ao_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
struct comedi_insn *insn,
unsigned int *data)
{
struct rti802_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++)
data[i] = devpriv->ao_readback[CR_CHAN(insn->chanspec)];
data[i] = devpriv->ao_readback[chan];
return i;
return insn->n;
}
static int rti802_ao_insn_write(struct comedi_device *dev,