Re: [RESEND] [PATCH -next 2/2] acpi,rfkill,backlight: comapl-laptop update - use rfkill switch subsystem

[Ivo van Doorn <ivdoorn@gmail.com>]

On Thursday 10 July 2008, Henrique de Moraes Holschuh wrote:
> On Wed, 09 Jul 2008, Ivo van Doorn wrote:
> > It is not mandatory if you are writing rfkill support for a driver that does not
> > come with a rfkill switch. Such drivers can make use of the rfkill events produced
> > by the hardware which does have such a switch.
> > 
> > When the hardware does have the rfkill switch, then yes rfkill_force_state() is mandatory.
> > The get_state() callback function is optional, and allows rfkill to differentiate
> > between soft and hardblock.
> 
> Do you want me to mark rfkill_force_state() as mandatory in the docs?  It
> *IS* the preferred way to deal with firmware/hardware-initiated state
> changes, after all.

Please do. Thanks.

> The rfkill subsystem will limp along without it, even when there are
> hardware rfkill lines... but no OSD function will work, as the system will
> pick up the change only when someone reads or writes to the state
> attribute...

That reason alone is good enough for me to mark it mandatory for any drivers
which features the rfkill key. :)

Ivo