From: H Hartley Sweeten Date: Tue, 27 May 2014 17:12:49 +0000 (-0700) Subject: staging: comedi: dt2814: use comedi_fc helpers to validate timer arg X-Git-Tag: firefly_0821_release~176^2~3465^2~39^2~78 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=704b0050f4be3e271e091ca05bc54186926a50bf;p=firefly-linux-kernel-4.4.55.git staging: comedi: dt2814: use comedi_fc helpers to validate timer arg Use the comedi_fc helper cfc_check_trigger_arg_is() to validate the trigger argument when the source is 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 Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c index 3794b7e52091..904c9f0e4afb 100644 --- a/drivers/staging/comedi/drivers/dt2814.c +++ b/drivers/staging/comedi/drivers/dt2814.c @@ -128,7 +128,7 @@ static int dt2814_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { int err = 0; - int tmp; + unsigned int arg; /* Step 1 : check if triggers are trivially valid */ @@ -170,10 +170,9 @@ static int dt2814_ai_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ - tmp = cmd->scan_begin_arg; - dt2814_ns_to_timer(&cmd->scan_begin_arg, cmd->flags & TRIG_ROUND_MASK); - if (tmp != cmd->scan_begin_arg) - err++; + arg = cmd->scan_begin_arg; + dt2814_ns_to_timer(&arg, cmd->flags & TRIG_ROUND_MASK); + err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg); if (err) return 4;