Re: [PATCH 1/3] platform: x86: dell-rbtn: Dell Airplane Mode Switch driver

[Matthew Garrett]

On Mon, Nov 24, 2014 at 09:55:47PM +0100, Pali Rohár wrote:

> This is complicated. HW switch controls all radio devices and you 
> do not know which are present in specified running machine. Also 
> list of devices which HW switch controls can be edited in BIOS 
> (on some machines). So what to do? We only know that it controls 
> some devices...

Typically there'll be a firmware method that provides a mask of the 
controlled devices. Do you have the ACPI tables for a device that 
implements this? Registering an rfkill interface that claims to only 
control wifi but which also kills other devices is likely to confuse 
userspace - it would probably be better to avoid registering the rfkill 
interface at all in that case.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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