This driver supportes cmd->start_src sources of TRIG_NOW, TRIG_INT, TRIG_OTHER,
and TRIG_EXT. Refactor the (*do_cmdtest) to clarify the trivial validation of
the cmd->start_arg. 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 <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/ni_tiocmd.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_tiocmd.c
b/drivers/staging/comedi/drivers/ni_tiocmd.c
index 7d64f88..b9d23db 100644
--- a/drivers/staging/comedi/drivers/ni_tiocmd.c
+++ b/drivers/staging/comedi/drivers/ni_tiocmd.c
@@ -89,14 +89,16 @@ static void ni_tio_configure_dma(struct ni_gpct *counter,
short enable,
static int ni_tio_input_inttrig(struct comedi_device *dev,
struct comedi_subdevice *s,
- unsigned int trignum)
+ unsigned int trig_num)
{
+ struct ni_gpct *counter = s->private;
+ struct comedi_cmd *cmd = &s->async->cmd;
unsigned long flags;
int retval = 0;
- struct ni_gpct *counter = s->private;
BUG_ON(counter == NULL);
- if (trignum != 0)
+
+ if (trig_num != cmd->start_src)
return -EINVAL;
spin_lock_irqsave(&counter->lock, flags);
@@ -271,8 +273,16 @@ int ni_tio_cmdtest(struct comedi_device *dev,
/* Step 3: check if arguments are trivially valid */
- if (cmd->start_src != TRIG_EXT)
+ switch (cmd->start_src) {
+ case TRIG_NOW:
+ case TRIG_INT:
+ case TRIG_OTHER:
err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
+ break;
+ case TRIG_EXT:
+ /* start_arg is the start_trigger passed to ni_tio_arm() */
+ break;
+ }
if (cmd->scan_begin_src != TRIG_EXT)
err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
--
1.8.5.2
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