diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-08-30 11:06:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-17 07:47:40 -0700 |
| commit | b3ff824a81e8978deb56f6d163479c1a0a606037 (patch) | |
| tree | 33107158ebe973d7b588aa9611c89a92ed4019e8 /drivers/staging/comedi/drivers/pcl726.c | |
| parent | 97f4289ad08cffe55de06d4ac4f89ac540450aee (diff) | |
staging: comedi: drivers: use comedi_dio_update_state() for complex cases
Use comedi_dio_update_state() to handle the boilerplate code to update
the subdevice s->state for more complex cases where the hardware is only
updated based on the 'mask' of the channels that are modified.
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>
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl726.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/pcl726.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/staging/comedi/drivers/pcl726.c b/drivers/staging/comedi/drivers/pcl726.c index a4d0bcc31e52..32fb57a7fa26 100644 --- a/drivers/staging/comedi/drivers/pcl726.c +++ b/drivers/staging/comedi/drivers/pcl726.c @@ -196,18 +196,19 @@ static int pcl726_di_insn_bits(struct comedi_device *dev, static int pcl726_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { const struct pcl726_board *board = comedi_board(dev); - - if (data[0]) { - s->state &= ~data[0]; - s->state |= data[0] & data[1]; + unsigned int mask; + + mask = comedi_dio_update_state(s, data); + if (mask) { + if (mask & 0x00ff) + outb(s->state & 0xff, dev->iobase + board->do_lo); + if (mask & 0xff00) + outb((s->state >> 8), dev->iobase + board->do_hi); } - if (data[1] & 0x00ff) - outb(s->state & 0xff, dev->iobase + board->do_lo); - if (data[1] & 0xff00) - outb((s->state >> 8), dev->iobase + board->do_hi); data[1] = s->state; |