Re: [PATCH] HID: removing obsolete kone_abi_version sysfs attr for roccat kone

On Fri, 18 Jun 2010, Stefan Achatz wrote:

The newest version of the accompanying userland tools cuts backward
compatibility and uses libudev to find its devices superseding the
quirky kone_abi_version sysfs attribute. Therefore it should be removed.

How backwards incompatible this change actually is?

What happens if you run old userspace tool (the one which looks for 
kone_abi_version) on a kernel with this patch applied?

Thanks,

-- 
Jiri Kosina
SUSE Labs, Novell Inc.