On Friday 21 November 2014 23:09:40 Darren Hart wrote: > On Sat, Nov 22, 2014 at 07:46:25PM +0100, Pali Rohár wrote: > > > > 0 Completed successfully > > > > -1 Completed with error > > > > -2 Function not supported > > > > > > > > So we can return something other too (not always > > > > -EINVAL). Do you have any idea which errno should we > > > > return for -1 and -2? > > > > > > For -1, I should think -EIO (I/O Error) > > > For -2, I'd expect -ENXIO (No such device or address) > > > > What about -ENOSYS for -2? > > No. This specific topic came up at kernel summit this year. > ENOSYS is specifically for not implemented system calls. >
Ok, I will use -ENXIO.
> > > > > > + if (convert) {
> > > > > > + /* NOTE: this switch fall down */
> > > > >
> > > > > "fall down" ? As in, it intentionally doesn't have
> > > > > breaks?
> > > >
> > > > This code convert "value" in "units" to new value in
> > > > minutes units. So for unit == days it is: 24*60*60...
> > > > So no breaks.
> > >
> > > Right, so the language of the comment just wasn't clear,
> > > try:
> > >
> > > /* Convert value from seconds to minutes */
> >
> > Err... to seconds :-) But OK, I will change comment.
>
> Oops, duh.
>
> /* Convert value from current units to seconds. */
>
> > > > > > + switch (unit) {
> > > > > > + case KBD_TIMEOUT_DAYS:
> > > > > > + value *= 24;
> > > > > > + case KBD_TIMEOUT_HOURS:
> > > > > > + value *= 60;
> > > > > > + case KBD_TIMEOUT_MINUTES:
> > > > > > + value *= 60;
> > > > > > + unit = KBD_TIMEOUT_SECONDS;
> > > > > > + }
--
Pali Rohár
[email protected]
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