From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt1-f176.google.com (mail-qt1-f176.google.com [209.85.160.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4ADF44749DA for ; Tue, 28 Jul 2026 22:55:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.176 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785279354; cv=none; b=nYiLSdc/owJK47wcKodfM/NqU11z/mlU+/0+uMey3jKaiUSe7UppVL8j1rTGzWttPFrB+WHwQ6F9jjCMp9ndUeqvayJE/dqAg3NSpwSnGpDZqYF+rZoU3uGcW0xCz0wMJEGYPqH6mHL1e6a05BK80r26Xpi1H7xjjHWUwqfSkW4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785279354; c=relaxed/simple; bh=8QDTGea8YD5fzdTqveHssulvg3hImMkLzrmbzptehnQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TmLzIqHUVusDZhSIhzCA3maR/N/ehTEkqD7zLBA4aBtv3UZJdX0lTCtYrXUh+NoEW3r5wZ+sXc5KfGDpuASPKlqaAwFPG03LlHvR+RHLX5Edi9U8TkHsRr5Bli6SkU4JHoNa45oqtuQJoMNLOark4M+8gT26LQbcJqn39lrfcqs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=nPawdzmh; arc=none smtp.client-ip=209.85.160.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nPawdzmh" Received: by mail-qt1-f176.google.com with SMTP id d75a77b69052e-51c16ac21acso2770881cf.0 for ; Tue, 28 Jul 2026 15:55:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785279352; x=1785884152; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ye3eMu6vu5RBUSzIcLpzipwJNEqmUBEyQ4TiICAypL8=; b=nPawdzmhrFq7TRmUHRZwxbmV73cHRqgtYnaO7Le9pCtX/C5a07PxJthvC8wvKUCMuI jnd5bXKv37RU2jVSMmoPE5fg2S1aCwwAfGUOlc9aZ3GXNn6A5BOb8SrjD4GhnZtMoaD+ WNxzx6lnsspQV8vWWTq70Nfhr0s5lmUX5LjD2T2l1FhZpDGUCHTqERIq0EguSZp4wRVH hSsP+mU5x5KxYi0BF+PMf9uA5ZF0+ZBWiMfsv0rcg2R68nvLWyPF2H4ZFpKsDbVjx09S cR9+8rLINrWwdTYZQgVVDaKyYVKU7g1kkLBOf6R2zwjRWCYrXar/hg3+XI+0pIf2ngka Q2OA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785279352; x=1785884152; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=ye3eMu6vu5RBUSzIcLpzipwJNEqmUBEyQ4TiICAypL8=; b=AL9XmN9dozDtuwX8hFT0AUvCE6pJMcd1N+6R2PEyBPtnl28ghCVCdhB5W4wbh8DzfN Vx0ICsdNfFMmWbMweNytjYD/ZC4o+Bw6bRHoBY40xXE1f4NkDsVDkRpH+FIsoNmPyS0W 8jns1mij8czxI1XiFaUSH03w3qsdGyha5FlRVCHKOEl13BeR3rTNKEEgXCchkDjWr3ed S/8q7iXWy0lcuCNwkz6BhsY9lsku7dM1McW8mGuzCZ4gvNV6Nd2Qo36BLkcaMSVh79Sm VK1j9WB+UN57vRpd/RrdgmC7S1DFgzxh/KWp9+vNe5Zjuz16+XGn4GR0SMJ5TC0VLrIN b4dg== X-Forwarded-Encrypted: i=1; AHgh+RqHkm6W6Gt/Pa1IOUPFYR01Vb87aX2BNJiiIrEoTSFoToMrbiMU6O4GlwhqXEHwtjiOSBvJ4RTKOJ2DR0M=@vger.kernel.org X-Gm-Message-State: AOJu0YzEYfWEdWy0ijInKP+1UoGKKG4rVlQidiuS65/1DJc/x/fZ6ufq BuS6sik1/CHy7A6/4oDyFrQEpsrPrnbPFfyRQLD5WdqUIeSCfBTU4z66 X-Gm-Gg: AR+sD11o9NxMwOOwUHmLG000EoPtQ2CXH3lZ1KRKruoiOB0OMjynyonUae9WaqvjzpE 135w1s7oU0HyKEFirf5wk08bosIOVjLUFgzCRzkoSLR+msxMk+w8snSNuG/v0M1oBa4zqK54YFB RtYeLdB91X+BBtFNd7bpNXQzhSccY4iiqPX7+9JIvnOtArIJ3Aah3OFdAekRzUJLuxSSdFz0fxh MTdfTDIxGBqHcJceErVKBNMowFFWtnBU73w2/ylP5aY8f0FmCqvZcu8yFphX64OjGBCwdqlcacm j7NMpHl8DMJcj2GFZoX2Vh6EO/CufK9mBycPpwCoZ4pfHeBYwhWcGmm4VqMKtlw4gfN8+Ft+byW wf4uMgBeL48vhIXi5b43qy4DWg/+zARn8v2OaEHYSripL1plW7Losepew0WayKJW4yyQ4YyZmzZ Okp3JsnWM/TfcURG+y9nMBtUfX99AXeJjEZYiv1zlehacb9nQ= X-Received: by 2002:a05:622a:1a85:b0:51c:1e2f:1281 with SMTP id d75a77b69052e-529d71e91e9mr40343311cf.42.1785279352015; Tue, 28 Jul 2026 15:55:52 -0700 (PDT) Received: from fedora (pool-100-11-178-145.phlapa.fios.verizon.net. [100.11.178.145]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-529e2b4f241sm8017991cf.7.2026.07.28.15.55.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jul 2026 15:55:51 -0700 (PDT) From: Dave Carey To: platform-driver-x86@vger.kernel.org Cc: ilpo.jarvinen@linux.intel.com, hdegoede@redhat.com, W_Armin@gmx.de, jikos@kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Dave Carey Subject: [PATCH v15 1/2] platform/x86/lenovo: lenovo-ymc: Suppress probe on Yoga Book 9 14IAH10 Date: Tue, 28 Jul 2026 18:55:43 -0400 Message-ID: <20260728225545.1333610-2-carvsdriver@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260728225545.1333610-1-carvsdriver@gmail.com> References: <20260728225545.1333610-1-carvsdriver@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The Yoga Book 9 14IAH10 (DMI product name "83KJ") has a dedicated yb9-kbdock WMI driver that registers an input device reporting SW_TABLET_MODE to track the detachable Bluetooth keyboard. lenovo-ymc also loads on this machine and creates an input node with the SW_TABLET_MODE capability bit set. For input switches, the presence of the capability bit has semantic meaning: userspace (e.g. GNOME) reads the switch state at startup from every node advertising the capability and does not expect more than one such node. Add a DMI match for the Yoga Book 9 14IAH10 to probe() so that lenovo-ymc returns -ENODEV on this hardware, leaving yb9-kbdock as the sole SW_TABLET_MODE source. The ymc_ec_trigger EC write, the only other action taken in response to a YMC event, is guarded by a separate DMI table that excludes this machine; no other functionality is affected. Signed-off-by: Dave Carey --- drivers/platform/x86/lenovo/ymc.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/platform/x86/lenovo/ymc.c b/drivers/platform/x86/lenovo/ymc.c index 470d53e3c9d2..a13c89dcb285 100644 --- a/drivers/platform/x86/lenovo/ymc.c +++ b/drivers/platform/x86/lenovo/ymc.c @@ -24,6 +24,22 @@ static bool force; module_param(force, bool, 0444); MODULE_PARM_DESC(force, "Force loading on boards without a convertible DMI chassis-type"); +static const struct dmi_system_id lenovo_ymc_nosupport_dmi_table[] = { + { + /* + * Yoga Book 9 14IAH10: SW_TABLET_MODE is reported by the + * yb9-kbdock driver. Suppress lenovo-ymc on this machine to + * avoid userspace seeing two input nodes that both advertise + * the SW_TABLET_MODE capability. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "83KJ"), + }, + }, + { } +}; + static const struct dmi_system_id allowed_chasis_types_dmi_table[] = { { .matches = { @@ -101,6 +117,9 @@ static int lenovo_ymc_probe(struct wmi_device *wdev, const void *ctx) struct input_dev *input_dev; int err; + if (dmi_check_system(lenovo_ymc_nosupport_dmi_table)) + return -ENODEV; + if (!dmi_check_system(allowed_chasis_types_dmi_table)) { if (force) dev_info(&wdev->dev, "Force loading Lenovo YMC support\n"); -- 2.55.0