Re: [PATCH 0/2] input/serio: Add a firmware_id sysfs attribute

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 03/28/2014 08:56 AM, Dmitry Torokhov wrote:
> On Thu, Mar 20, 2014 at 05:21:59PM +0000, Matthew Garrett wrote:
>> On Thu, Mar 20, 2014 at 11:12:08AM +0100, Hans de Goede wrote:
>>
>>> Which in the end turns out to be much nicer too, since it gets rid of needing
>>> a udev-helper too. After this much too long introduction I'll let the patches
>>> speak for themselves.
>>
>> Yeah, I was coming to the conclusion that this was probably the best we 
>> could do. It's unfortunate that "id" is already in use - we'd be able to 
>> get away without any X server modifications otherwise.
>>
>> Long term we probably still want to tie serio devices to the ACPI 
>> devices in case the vendor provides power management calls there, but we 
>> can leave that until there's an actual example.
> 
> I am still unsure if we shoudl be adding these new IDs to serio core...
> Can't the X driver take a peek at ACPI devices on it's own?

The problem is there is no way for userspace to know which /sys/devices/pnp0/00:xx
device is the serio bus host.

Regards,

Hans