diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-04-17 10:08:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-22 10:21:32 -0700 |
| commit | e702c66c0724c09e8efb87cb6fff8100e988cdb0 (patch) | |
| tree | db217298285a1fb43ead88608d44a6a6ef824c7d | |
| parent | 025b918731e4ee46ee8a27073281b2db715f79e2 (diff) | |
| download | linux-e702c66c0724c09e8efb87cb6fff8100e988cdb0.tar.bz2 | |
staging: comedi: ni_pcidio: fix the cmd->start_arg use for TRIG_INT
This driver only a cmd->start_src of TRIG_NOW or TRIG_INT. The cmd->start_arg
is trivially validated for both sources to be 0. For a TRIG_INT source, the
cmd->start_arg is actually the valid trig_num that is passed to the async
(*inttrig) callback.
Refactor the (*inttrig) function so that the cmd->start_arg is used to check
the trig_num instead of the open coded value.
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>
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_pcidio.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c index 85ac2d964f5c..962c2353a79f 100644 --- a/drivers/staging/comedi/drivers/ni_pcidio.c +++ b/drivers/staging/comedi/drivers/ni_pcidio.c @@ -773,11 +773,13 @@ static int setup_mite_dma(struct comedi_device *dev, struct comedi_subdevice *s) } static int ni_pcidio_inttrig(struct comedi_device *dev, - struct comedi_subdevice *s, unsigned int trignum) + struct comedi_subdevice *s, + unsigned int trig_num) { struct nidio96_private *devpriv = dev->private; + struct comedi_cmd *cmd = &s->async->cmd; - if (trignum != 0) + if (trig_num != cmd->start_arg) return -EINVAL; writeb(devpriv->OpModeBits, devpriv->mite->daq_io_addr + OpMode); |