From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: "R. Larocque" <rlarocque@disroot.org>
Cc: linux-input@vger.kernel.org, salmundani@gmail.com,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] Input: synaptics - limit T440p InterTouch quirk to LEN0036
Date: Sun, 27 Sep 2026 21:51:23 -0700 [thread overview]
Message-ID: <arnyJnqIpwcwX2nT@google.com> (raw)
In-Reply-To: <20260927005810.85971-1-rlarocque@disroot.org>
On Sat, Sep 26, 2026 at 08:58:10PM -0400, R. Larocque wrote:
> From: "Raphaël Larocque" <rlarocque@disroot.org>
>
> The ThinkPad L440 also uses board id 2722, but does not have the SMBus
> initialization problem seen on the T440p. On the L440, the SMBus
> companion becomes available shortly after psmouse probes, allowing the
> touchpad to use SMBus/RMI4 normally.
>
> The T440p's quirk is currently applied to all Synaptics touchpads with
> board id 2722, unnecessarily disabling SMBus InterTouch on the L440,
> as reported by Daniel Salmun.
>
> Restrict the quirk to PNP ID LEN0036, which identifies the T440p, so
> that other devices sharing board id 2722 retain their normal
> SMBus/RMI4 operation.
>
> Reported-by: Daniel Salmun <salmundani@gmail.com>
> Link: https://lore.kernel.org/all/20260925230039.236786-1-salmundani@gmail.com/
> Fixes: 26eb3d92c7a4 ("Input: synaptics - disable InterTouch on ThinkPad T440p (board id 2722)")
> Cc: stable@vger.kernel.org
> Signed-off-by: Raphaël Larocque <rlarocque@disroot.org>
Swapped the condition (since integer check is cheaper) and applied,
thank you.
--
Dmitry
prev parent reply other threads:[~2026-09-28 4:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-27 0:58 [PATCH] Input: synaptics - limit T440p InterTouch quirk to LEN0036 R. Larocque
2026-09-28 4:51 ` Dmitry Torokhov [this message]
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