Renaming of devices in 2.6.31

[Michael 'Mickey' Lauer]

Am Montag, den 23.11.2009, 00:23 +0100 schrieb Lars-Peter Clausen:
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> Michael 'Mickey' Lauer wrote:
> > Am Sonntag, den 22.11.2009, 23:43 +0100 schrieb Lars-Peter Clausen:
> >
> >> Joerg Reisenweber wrote:
> >>> [Lars-Peter Clausen So  22. November 2009]:
> >>>> Michael 'Mickey' Lauer wrote:
> >>>>> Am Sonntag, den 22.11.2009, 18:19 +0100 schrieb Lars-Peter
> >>>>> Clausen:
> >>>>>
> >>>>>> But: pm-bt is gone anyway pm-gps is gone soon pm-gsm
> >>>>>> might also go away, but if it's not it'll be renamed
> >>>>>> back.
> >>>>> Is anyone preparing a document for the poor userland folks
> >>>>> that will get their peripheral control means ripped up side
> >>>>> down?
> >>>> Not yet. But once the kernel work has been done and there are
> >>>> no more changes to be expected, I guess there will be
> >>>> detailed information what has changed.
> >>> Great, so let's stop userland development until that day :-(
> >> Why do you want to do that?
> >>> You're aware of  http://wiki.openmoko.org/wiki/GTA02_sysfs ?
> >> Yes. And I think it's pretty confusing.
> >>>>>> gta02-vibrator is called gta02::vibrator. And this will
> >>>>>> stay.
> >>>>>>
> >>>>> So gta01 will have a gta02::vibrator, oh well, there's much
> >>>>>  worse things in life than not making sense :)
> >>>> No gta01 has gta01::vibrator
> >>> OMG
> >> I know you can't understand that. But I'm following specs here
> >
> > I question the sanity of specs that say that a device with the
> > _same_ interface and semantics has to be exposed through different
> > names via sysfs. Can you point me to the relevant docs, please?
> You are free to do that.
> 
> 
> The naming spec for leds can be found at:
> http://www.mjmwired.net/kernel/Documentation/leds-class.txt

Ok, I have read this. Twice to make sure I don't overlook anything.
Nowhere does it says that on an UmbaUmba Phone the vibrator needs to be
called UmbaUmba::vibrator. The line you are probably referring to is

"devicename:colour:function"

What 'devicename' reflects to is up to interpretation, in my opinion it
does not mean the device as a whole (UmbaUmba Phone), but rather the
peripheral device (FooBarCustomChip). As such, the same vibrator device
can be found in gta01 and gta02, hence needs to have the same name.

Richard, excuse me for disturbing you, but we need some advice here. As
the LED class maintainer, could you give your opinon on renaming those
class devices? The thread starts w/
http://lists.openmoko.org/pipermail/openmoko-kernel/2009-November/010717.html

Thanks,

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