The const boardinfo pointer is only used in this function to work out
the value needed to convert the data to its twos complement. Use the
comedi_subdevice 'maxdata' to do this conversion and remove the 'board'
pointer.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/pcmad.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/staging/comedi/drivers/pcmad.c b/drivers/staging/comedi/drivers/pcmad.c
index f64e75b..a05b5d48 100644
--- a/drivers/staging/comedi/drivers/pcmad.c
+++ b/drivers/staging/comedi/drivers/pcmad.c
@@ -88,7 +88,6 @@ static int pcmad_ai_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
- const struct pcmad_board_struct *board = comedi_board(dev);
struct pcmad_priv_struct *devpriv = dev->private;
int chan;
int n;
@@ -107,7 +106,7 @@ static int pcmad_ai_insn_read(struct comedi_device *dev,
data[n] |= (inb(dev->iobase + PCMAD_MSB) << 8);
if (devpriv->twos_comp)
- data[n] ^= (1 << (board->n_ai_bits - 1));
+ data[n] ^= ((s->maxdata + 1) >> 1);
}
return n;
--
1.8.1.4
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
