From b2ef4813d0a1b012622f14f71b320c8c7a9e6bdb Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 27 May 2014 10:12:44 -0700 Subject: [PATCH] staging: comedi: comedi_test: 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. 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 --- drivers/staging/comedi/drivers/comedi_test.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/staging/comedi/drivers/comedi_test.c b/drivers/staging/comedi/drivers/comedi_test.c index 9896a16..67a09aa 100644 --- a/drivers/staging/comedi/drivers/comedi_test.c +++ b/drivers/staging/comedi/drivers/comedi_test.c @@ -226,7 +226,7 @@ static int waveform_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 */ @@ -278,22 +278,18 @@ static int waveform_ai_cmdtest(struct comedi_device *dev, /* step 4: fix up any arguments */ if (cmd->scan_begin_src == TRIG_TIMER) { - tmp = cmd->scan_begin_arg; + arg = cmd->scan_begin_arg; /* round to nearest microsec */ - cmd->scan_begin_arg = - nano_per_micro * ((tmp + - (nano_per_micro / 2)) / nano_per_micro); - if (tmp != cmd->scan_begin_arg) - err++; + arg = nano_per_micro * + ((arg + (nano_per_micro / 2)) / nano_per_micro); + err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, arg); } if (cmd->convert_src == TRIG_TIMER) { - tmp = cmd->convert_arg; + arg = cmd->convert_arg; /* round to nearest microsec */ - cmd->convert_arg = - nano_per_micro * ((tmp + - (nano_per_micro / 2)) / nano_per_micro); - if (tmp != cmd->convert_arg) - err++; + arg = nano_per_micro * + ((arg + (nano_per_micro / 2)) / nano_per_micro); + err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg); } if (err) -- 2.7.4