Re: [PATCH v9 06/11] HID: asus: early return for ROG devices

[Antheas Kapenekakis <lkml@antheas.dev>]

On Thu, 20 Nov 2025 at 14:29, Denis Benato <benato.denis96@gmail.com> wrote:
>
>
> On 11/20/25 10:46, Antheas Kapenekakis wrote:
> > Some ROG devices have a new dynamic backlight interface for control by
> > Windows. This interface does not create an ->input device, causing the
> > kernel to print an error message and to eject it. In addition, ROG
> > devices have proper HID names in their descriptors so renaming them is
> > not necessary.
> Is this patchset supposed to work without the renaming, correct?
>
> If so consider dropping the drop of renames, taking required time
> to organize with Derek and resubmit when things are ready:
> there is no point for the rename to stall the rest and quit renaming
> is not urgent at all.

I feel like two months is enough of a timeframe for a simple rename
fix to go in.

I do not want to have to reorder the checks just so the rename can
stay in _for now_. Skipping the ->input check is important for both
Xbox Ally/Z13 as it causes errors and the device to stay partially
uninitialized.

> > Therefore, if a device is identified as ROG, early return from probe to
> > skip renaming and ->input checks.
> >
> > Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
> > ---
> >  drivers/hid/hid-asus.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
> > index 3047bc54bf2e..6193c9483bec 100644
> > --- a/drivers/hid/hid-asus.c
> > +++ b/drivers/hid/hid-asus.c
> > @@ -1236,6 +1236,13 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
> >           asus_kbd_register_leds(hdev))
> >               hid_warn(hdev, "Failed to initialize backlight.\n");
> >
> > +     /*
> > +      * For ROG keyboards, skip rename for consistency and ->input check as
> > +      * some devices do not have inputs.
> > +      */
> > +     if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD)
> > +             return 0;
> > +
> >       /*
> >        * Check that input registration succeeded. Checking that
> >        * HID_CLAIMED_INPUT is set prevents a UAF when all input devices
> Just for clarity is this supposed to fix this: https://gitlab.com/asus-linux/asusctl/-/issues/700 ?
> This model works once in windows users disable  that new feature.
>
> Note: that kernel the person submitting the bug is using contains your v8
> and asus-armoury.
>

No. This user has a laptop that has at least a WMI implementation of
RGB controls (this is why you can see rgb settings). Since you did not
ask for logs, it is not clear if it also has a HID implementation that
is skipped due to e.g., a missing product ID. Very likely it is a bug
on the WMI implementation that is out of scope for this series.