On Thu, Jul 30, 2015 at 09:18:56AM +0200, walter harms wrote:
>
>
> Am 29.07.2015 23:36, schrieb Dan Carpenter:
> > We checked that "it->options[3]" was non-zero on the line before so
> > there is no need to check again.
> >
> > Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
> >
> > diff --git a/drivers/staging/comedi/drivers/das16.c
> > b/drivers/staging/comedi/drivers/das16.c
> > index d7cf4b1..056bca9 100644
> > --- a/drivers/staging/comedi/drivers/das16.c
> > +++ b/drivers/staging/comedi/drivers/das16.c
> > @@ -1032,8 +1032,7 @@ static int das16_attach(struct comedi_device *dev,
> > struct comedi_devconfig *it)
> >
> > /* check that clock setting is valid */
> > if (it->options[3]) {
> > - if (it->options[3] != 0 &&
> > - it->options[3] != 1 && it->options[3] != 10) {
> > + if (it->options[3] != 1 && it->options[3] != 10) {
> > dev_err(dev->class_dev,
> > "Invalid option. Master clock must be set to 1
> > or 10 (MHz)\n");
> > return -EINVAL;
>
> mmh, acording to the error messages 1 or 10 is allowed, obviously 0 is/was
> also valid.
> I would suggest to put that into one if () to make things more obvious.
> It 0 is also valid a minor tweak to the error msg would be nice.
Zero values are not used. If you are going to set it then it has to be
1 or 10. The message makes sense and matches the logic of the code.
regards,
dan carpenter
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