diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/pcmad.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/pcmad.c b/drivers/staging/comedi/drivers/pcmad.c index 8028e476bff3..c9af0aa38027 100644 --- a/drivers/staging/comedi/drivers/pcmad.c +++ b/drivers/staging/comedi/drivers/pcmad.c @@ -104,6 +104,10 @@ static int pcmad_ai_insn_read(struct comedi_device *dev, val = inb(dev->iobase + PCMAD_LSB) | (inb(dev->iobase + PCMAD_MSB) << 8); + /* data is shifted on the pcmad12, fix it */ + if (s->maxdata == 0x0fff) + val >>= 4; + if (pcmad_range_is_bipolar(s, range)) { /* munge the two's complement value */ val ^= ((s->maxdata + 1) >> 1); |