From e9ace43cbff7894f63a4f5a9d8c0f7d20545add4 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 27 May 2014 10:12:46 -0700 Subject: [PATCH] staging: comedi: das16m1: 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. For aesthetics, rename the local variable 'tmp' to 'arg'. Also, change the 'err' variable to the correct type. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/das16m1.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/staging/comedi/drivers/das16m1.c b/drivers/staging/comedi/drivers/das16m1.c index c97444991d89..ec039fbff0f9 100644 --- a/drivers/staging/comedi/drivers/das16m1.c +++ b/drivers/staging/comedi/drivers/das16m1.c @@ -182,7 +182,8 @@ static int das16m1_cmd_test(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { struct das16m1_private_struct *devpriv = dev->private; - unsigned int err = 0, tmp; + int err = 0; + unsigned int arg; /* Step 1 : check if triggers are trivially valid */ @@ -231,14 +232,12 @@ static int das16m1_cmd_test(struct comedi_device *dev, /* step 4: fix up arguments */ if (cmd->convert_src == TRIG_TIMER) { - tmp = cmd->convert_arg; - /* calculate counter values that give desired timing */ + arg = cmd->convert_arg; i8253_cascade_ns_to_timer(I8254_OSC_BASE_10MHZ, &devpriv->divisor1, &devpriv->divisor2, - &cmd->convert_arg, cmd->flags); - if (tmp != cmd->convert_arg) - err++; + &arg, cmd->flags); + err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg); } if (err) -- GitLab