diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2014-05-27 10:12:48 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-28 14:25:56 -0700 |
| commit | d579392a3fab9acd63123f4167abd822600777a4 (patch) | |
| tree | 1df3de532237bba075244c8ac5148bc743dbf64c /drivers/staging | |
| parent | 58245cc968b1e44bbc3055a8fac25ed3449914a9 (diff) | |
staging: comedi: dmm32at: use comedi_fc helpers to validate timer args
Use the comedi_fc helper cfc_check_trigger_arg_is() to validate the
trigger arguments when the source is TRIG_TIMER.
Use cfc_check_trigger_arg_min() to vaidate the scan_begin_arg when the
scan_begin_src and convert_src are both TRIG_TIMER.
All the arguments are unsigned int, change the local variable to an
unsigned int and rename it for aesthetic reasons.
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')
| -rw-r--r-- | drivers/staging/comedi/drivers/dmm32at.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/staging/comedi/drivers/dmm32at.c b/drivers/staging/comedi/drivers/dmm32at.c index 931150150e10..ad7a5d53b97b 100644 --- a/drivers/staging/comedi/drivers/dmm32at.c +++ b/drivers/staging/comedi/drivers/dmm32at.c @@ -275,7 +275,7 @@ static int dmm32at_ai_cmdtest(struct comedi_device *dev, struct comedi_cmd *cmd) { int err = 0; - int tmp; + unsigned int arg; /* Step 1 : check if triggers are trivially valid */ @@ -351,24 +351,19 @@ static int dmm32at_ai_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ if (cmd->scan_begin_src == TRIG_TIMER) { - tmp = cmd->scan_begin_arg; - dmm32at_ns_to_timer(&cmd->scan_begin_arg, - cmd->flags & TRIG_ROUND_MASK); - if (tmp != cmd->scan_begin_arg) - err++; + arg = cmd->scan_begin_arg; + dmm32at_ns_to_timer(&arg, cmd->flags & TRIG_ROUND_MASK); + err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg); } if (cmd->convert_src == TRIG_TIMER) { - tmp = cmd->convert_arg; - dmm32at_ns_to_timer(&cmd->convert_arg, - cmd->flags & TRIG_ROUND_MASK); - if (tmp != cmd->convert_arg) - err++; - if (cmd->scan_begin_src == TRIG_TIMER && - cmd->scan_begin_arg < - cmd->convert_arg * cmd->scan_end_arg) { - cmd->scan_begin_arg = - cmd->convert_arg * cmd->scan_end_arg; - err++; + arg = cmd->convert_arg; + dmm32at_ns_to_timer(&arg, cmd->flags & TRIG_ROUND_MASK); + err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg); + + if (cmd->scan_begin_src == TRIG_TIMER) { + arg = cmd->convert_arg * cmd->scan_end_arg; + err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg, + arg); } } |