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staging: comedi: rti800: tidy up rti800_ao_insn_read()

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For aesthetic reasons, tidy up the parameters passed to this function.

The comedi core expects (*insn_read) functions to return the number
of data values actually read (insn->n). Change the return to make
clearer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
2013-04-08 18:19:23 -07:00
committed by Greg Kroah-Hartman
parent 853fc89223
commit 0682323c52
1 changed files with 4 additions and 3 deletions
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7
drivers/staging/comedi/drivers/rti800.c
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@@ -219,16 +219,17 @@ static int rti800_ai_insn_read(struct comedi_device *dev,
static int rti800_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 rti800_private *devpriv = dev->private;
int i;
int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++)
data[i] = devpriv->ao_readback[chan];
return i;
return insn->n;
}
static int rti800_ao_insn_write(struct comedi_device *dev,