lkml.org 
[lkml]   [2014]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] platform: x86: dell-laptop: Add support for keyboard backlight
Date
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
pali.rohar@gmail.com
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2014-11-23 16:21    [W:0.065 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site