From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793208631; b=Fam1QeQwI2LfTaZWia4bxTQ2Nb6GOJ15TzKXm8cggZLkRsS0iJxvlN4O+EfdN7uYBO1m 1AvAhjTx+MsqZMB90eZmI+mTT0FGrN7j659Yt7AE7RoVowV6k8U2XON5wCZ07xSr+yKFw C111ZOmbQdkHeAsY8+eT0Ze4mjyKnBZ+yhTWfSb57D45VOZoSxDl6ApTY39rdMP5kf3o8 tNSWcwdooc+t8WfVQz2mYrioHnhC2MgVxd9sJl/pHj2XYspCMpJOEtLOWyWzAtpCXCA3p 7miuYatxBocVZ48Ibfr2U2cBogZYjSePWeZj+Fjy76aG67r1x3Qgq5kmThluygOnRhw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793208631; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=vw+9zy8SF2rddUeffamwVx76TjX0nY4mybiwoAETYPg=; b=3o+ZdN5/cDyxy7dFwdlKjHikEwwcF6W2Vbw5NpkOyjTmbcr1UNba9+bs5QWpFw14upiv koVYrHroPxYbt/RlotbDbWIVqDz8VQE4LopTeyI+9rC92xAKLYgkuWGQQiR/AQhwHEi4U E/ekC6yCaxom3XKd9xvV33JrY8/4f+Nq2yRPWT13iA7feWMq4YAt+UwgLrJvZYvyHbJI2 7oxcwiNx/35QGMapWKYufqXfZ9T8WhF0eMH+O1bmoqc3E2K7pqIlyy4WIOU9DvXDud2EC LFrc9kU9+XjTga95YH7WjRNJ/IqXTgcmLYBzpzx9/zO6ybcBoJ8QvJTvT2iLz7vDuJw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ruzXLvjR; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AC97D606A31A; Wed, 28 Oct 2026 17:30:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ruzXLvjR Received: by smtp.kernel.org (Postfix) with ESMTPSA id 079D41F01825; Wed, 28 Oct 2026 17:30:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793208630; bh=vw+9zy8SF2rddUeffamwVx76TjX0nY4mybiwoAETYPg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ruzXLvjRAwz9Mfxz0LTKGfAgxxBOFDkVCvQ+CMVaRfMQrkrMPE81iRkiNwCt2Yrzl aXw4PbsDq3HvWMtBxhOv3NlCgJIyqpVicGW4ptdHXRPcDLGIrExIRDRQLlvZB2uZ2E YClMWh6RhEy75Lbc35hgR41q4Sa6ERwj50DjjN68= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Daniel Salmun , =?UTF-8?q?Rapha=C3=ABl=20Larocque?= , Dmitry Torokhov Subject: [PATCH 5.10 185/516] Input: synaptics - limit T440p InterTouch quirk to LEN0036 Date: Wed, 28 Oct 2026 17:55:37 +0100 Message-ID: <20261028170007.886588680@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170003.522232767@linuxfoundation.org> References: <20261028170003.522232767@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Raphaël Larocque commit f0fd8993082ca229faa3f9844f1c9fe182eca20b upstream. 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 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 Link: https://patch.msgid.link/20260927005810.85971-1-rlarocque@disroot.org Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/input/mouse/synaptics.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1806,8 +1806,10 @@ static int synaptics_setup_intertouch(st return -ENXIO; } - /* Disable intertouch on known-broken board revisions */ - if (info->board_id == 2722) { + /* Disable intertouch on known-broken T440p board revisions */ + if (info->board_id == 2722 && + psmouse_matches_pnp_id(psmouse, + (const char * const []){"LEN0036", NULL})) { psmouse_info(psmouse, "Disabling intertouch for board id %u\n", info->board_id);