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SubjectRe: [PATCH 1/3] platform: x86: dell-rbtn: Dell Airplane Mode Switch driver
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@srcf.ucam.org


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