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staging: comedi: usbdux: use comedi_offset_munge() 

Use the comedi_offset_munge() helper to convert the hardware two's
complement values to the offset binary format expected by comedi.

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 2015-08-14 15:23:31 -07:00 committed by Greg Kroah-Hartman
parent 2779b7e514
commit 6e2ebdf872
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/comedi/drivers/usbdux.c
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@ -266,7 +266,7 @@ static void usbduxsub_ai_handle_urb(struct comedi_device *dev,
/* bipolar data is two's-complement */
if (comedi_range_is_bipolar(s, range))
val ^= ((s->maxdata + 1) >> 1);
val = comedi_offset_munge(s, val);
/* transfer data */
if (!comedi_buf_write_samples(s, &val, 1))
@ -776,7 +776,7 @@ static int usbdux_ai_insn_read(struct comedi_device *dev,
/* bipolar data is two's-complement */
if (comedi_range_is_bipolar(s, range))
val ^= ((s->maxdata + 1) >> 1);
val = comedi_offset_munge(s, val);
data[i] = val;
}