linux-kernel - Re: [PATCH] HID: multitouch: add quirks for Lenovo Yoga Book 9i

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Message-ID: <468q5375-r032-so88-p263-r663p7646q01@xreary.bet>
Date: Sat, 10 Jan 2026 10:03:58 +0100 (CET)
From: Jiri Kosina <jikos@...nel.org>
To: Brian Howard <blhoward2@...il.com>
cc: Andrei Shumailov <gentoo1993@...il.com>, 
    Benjamin Tissoires <bentiss@...nel.org>, linux-input@...r.kernel.org, 
    linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: multitouch: add quirks for Lenovo Yoga Book 9i

On Mon, 17 Nov 2025, Brian Howard wrote:

> Add required quirks for Lenovo Yoga Book 9i Gen 8 to Gen 10 models, 
> including a new quirk providing for custom input device naming and 
> dropping erroneous InRange reports.
> 
> The Lenovo Yoga Book 9i is a dual-screen laptop, with a single composite
> USB device providing both touch and tablet interfaces for both screens.
> All inputs report through a single device, differentiated solely by report
> numbers. As there is no way for udev to differentiate the inputs based on
> USB vendor/product ID or interface numbers, custom naming is required to
> match against for downstream configuration. A firmware bug also results
> in an erroneous InRange message report (with everything other than X/Y 
> as 0) being received after the stylus leaves proximity, blocking later 
> touch events. 
> 
> Signed-off-by: Brian Howard <blhoward2@...il.com>
> Tested-by: Brian Howard <blhoward2@...il.com>
> Reported-by: Andrei Shumailov <gentoo1993@...il.com>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220386

Applied, thanks.

-- 
Jiri Kosina
SUSE Labs