From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f175.google.com (mail-pl1-f175.google.com [209.85.214.175]) (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 BC37F22A1D4 for ; Sun, 29 Mar 2026 05:41:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774762861; cv=none; b=LKc2Gyxq4k+A9bH7Ya2oYblohhJZnZfR0XeOxSe24VvVzGflkxjBJardjR40vP5YcmWkdjFY4r24R0ZAY8lD5/FN61nHxgAVxMqvlH+LhpSxicKVT4T59ix6Egl+bHvgAqX+C5REAekIPmv4gPplv/vbKmLD8NJgTT5Tj+w/pKs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774762861; c=relaxed/simple; bh=BvL+hh7LuybVdC+oj7udPBENItX/XuhF8JfxeCawA3M=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cPD3h+0StP50cbHppOqaK0lMyh/RCbiehxrvRvuOu5IyClKiWgZFPmKMHk2U1bIST0SfuW+Ed7HRENzuOeGZbiyYjT7TXnHy5nO1sPKkr6Qu/mGtNGT1XpRuZLfGzs7JbWPvjP/At/xG6ud9sazH/zYHJUwmhVZkIjwSNdIwMkw= 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=drQyMlzH; arc=none smtp.client-ip=209.85.214.175 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="drQyMlzH" Received: by mail-pl1-f175.google.com with SMTP id d9443c01a7336-2aaed195901so14530635ad.0 for ; Sat, 28 Mar 2026 22:41:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774762860; x=1775367660; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=NV4grn9f33GFJLiairJhFpoxSc6Hz45zMLVdn62cgR0=; b=drQyMlzHbBpliHgfH1ZRwx+zIQ5bGQLJAnO076yE8XSJfVK97Ih7zYnO5KsXQ5x5ZC UG1sOnFN2PJN1rOtlx3hT05cSfWAX64CSXY8/o4hbXlI30RuZSFKmDHzBCjnZLUasOer wt6ki4s6VjFY81hkhfaYCKIgmB/JCv84XVr7AWZ+0ljGNqNcV6u1KB+4W1H6MiISvpJ0 1NGjAEWYxj4M0esSQWrpjUgEJkxYJ0fNBIHNXkfcri+dyNIU0v6icShi3vklNiYdZPKt 3EUN+A1tMeVtoY0sg1+yLTB6C8a4Z9cqYX/41ZQQAILO+Ab4GORWkTcXycTR2KgRxW7h Rmcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774762860; x=1775367660; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=NV4grn9f33GFJLiairJhFpoxSc6Hz45zMLVdn62cgR0=; b=PIHA4c+YFEqtqpmndhNED7BEM1URGum88IaMFY8Nlip5tPkof9dPY8oLuFepQQVWOy uP6et4+qkufMuh8bDuMCT3GNB+bk8MX9D/JXqsUCIyMIqpjUTAWAuoZN29VkjRtARuqR 7fqgfucjHOgBVYSDn8yXy7Bv8iWQPzKS1AuNex7M4twyE7UPZHrAsZRO7fnWHRCv5jd9 kh6iLan9VKToid2Rqr4RCiWzsyxwVlfPXV9pY8oajvG0i2llViFFWsVvIY+B87Z5GEts ylQ/j0n2JeZgD8Wvl2qmaIM9kH0ftQ8uXB9+xLaov/zZlLkbu6xDnz92R9fbtsdL16wt gknw== X-Gm-Message-State: AOJu0YzjdCn/naZlJrRFwK/UeHQaSdVow/8TZdpZZ24bd114pVvTX3MR X6khS/UhIxy+1iOz34WpI0XzVPK79l2IMa6C3MYyGqBvjRtQs+Lz4gQrwyOFepBLqak= X-Gm-Gg: ATEYQzxMyJrFAkMVG+0YdlvP+MNbyVuiBfpNXlJZqN6mnjA288HdLxOmqH1ESGiPFuU 5XNJFUgAW6PsrvwqzI4kuL9gJBE5+76utBVYEkVYNuqNZwYeo6qgGqiOUJlK6+vf/2p3J5dT93a NAOp4Mgk10pFOQUMcCCTamoR0On2EQ6MXNrF5uqQmyzHeNt+8XfVwXLs5SWXVZcEnYlPT8L4nxW 8OszWj283T4LxSztcOcmWC+g5yiD3azdEbUIghFUt6B/HcN0hsIXH/Hqs3t1kWsY43Zx8LRvr7n y0p+ncxMx2ZnipSZBH+P0blJAEDZiJErymdikKSGgKxlz7mZEVyHtbs6NwdZo5v8nJ1zCFIhxeB Z5O9RWcDolyq+Tob42dmuuSiBEaBvecNx5Fn1x9JwHUMRnrwfk1vsoIOL8YSpy3eeUTOft0fEQM P+q88GUfKRJY9632bJQpbQnHHU4F/DuFN1b3pMm6jmbtgDYJjiFnGTVjp3rKqcKVUs9G4sHx2T+ 4Rz5Wo5XiKYhrFIjTs= X-Received: by 2002:a17:902:ef48:b0:2b2:46b1:182d with SMTP id d9443c01a7336-2b246b12415mr35551225ad.8.1774762859679; Sat, 28 Mar 2026 22:40:59 -0700 (PDT) Received: from cachyos-x8664.iitd.ac.in ([2001:df4:e000:3fd2:59eb:b75c:7ede:19e7]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b242670302sm39144395ad.26.2026.03.28.22.40.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 28 Mar 2026 22:40:59 -0700 (PDT) From: Bani Brata To: platform-driver-x86@vger.kernel.org Cc: Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , linux-kernel@vger.kernel.org, Bani Brata Subject: [PATCH] platform/x86: hp-wmi: Hide bogus fan RPM on HP ENVY x360 13-bd0xxx Date: Sun, 29 Mar 2026 11:10:50 +0530 Message-ID: <20260329054052.32023-1-banibrata2007@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On the HP ENVY x360 Convertible 13-bd0xxx (board 8824), the WMI interfaces for reading fan speed (HPWMI_FAN_SPEED_GET_QUERY) return zero-filled buffers regardless of the actual fan speed. This results in the hp_wmi driver exposing `fan1_input` and `fan2_input` nodes through hwmon that permanently report "0 RPM", which is misleading and interferes with userspace sensor monitoring tools. Add a DMI quirk to disable exposing the hwmon fan nodes on this specific board. Signed-off-by: Bani Brata --- drivers/platform/x86/hp/hp-wmi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c index XXXXXXX..XXXXXXX 100644 --- a/drivers/platform/x86/hp/hp-wmi.c +++ b/drivers/platform/x86/hp/hp-wmi.c @@ -192,6 +192,18 @@ static const struct dmi_system_id hp_wmi_rfkill_dmi_table[] __initconst = { }; static bool is_victus_s_board; +static bool is_envy_x360_8824_board; + +static const struct dmi_system_id hp_envy_x360_8824_boards[] __initconst = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HP"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY x360 Convertible 13-bd0xxx"), + DMI_MATCH(DMI_BOARD_NAME, "8824"), + }, + }, + {}, +}; enum hp_wmi_radio { HPWMI_WIFI = 0x0, @@ -2166,6 +2178,8 @@ static umode_t hp_wmi_hwmon_is_visible(const void *data, case hwmon_pwm: return 0644; case hwmon_fan: + if (is_envy_x360_8824_board) + return 0; if (is_victus_s_thermal_profile()) { if (hp_wmi_get_fan_speed_victus_s(channel) >= 0) return 0444; @@ -2188,6 +2202,8 @@ static int hp_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type, switch (type) { case hwmon_fan: + if (is_envy_x360_8824_board) + return -EOPNOTSUPP; if (is_victus_s_thermal_profile()) ret = hp_wmi_get_fan_speed_victus_s(channel); else @@ -2281,6 +2297,8 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) { const struct dmi_system_id *id; + is_envy_x360_8824_board = dmi_first_match(hp_envy_x360_8824_boards); + /* * Currently only victus_s devices use the * active_thermal_profile_params -- 2.48.1