From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0470617A314 for ; Thu, 24 Sep 2026 04:51:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790225479; cv=none; b=hymQgiUksnqrYL0FRT/mvjzceQDoZFDbc8VNfpzJSn8IMR9jmDlmG/EGLW4SleHbVqQRGis8uEaDvF2H3788N1W0BDyW66VPkiy+9NzVIlE0LrinRmqtFbvJTVPR/Yxj1ijGja6gPE8XTBaGywo3M9KTYhva1cpqF4j/mvWLp1k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790225479; c=relaxed/simple; bh=Um2/kTnL9qa9cdtiNQiZbJPZ1lZc2Cob4pDgEa75j8I=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=UMdX9uLi4V8Ie61nc/ULJEWMcf1o+lEJ/4hUnelHNclNjPoWROvQk7O5cC7uUAMgtdIzzoVAZ294A+z8uxitSD3dxpeLxizMEjwZ4dIw/MDH8HlwZv1kKtjhEY0EmgyajpwAtK1gx+gkhnppb1off1Z/gTzlFqqfn/jHU3kZ7yc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=O8+11DHB; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="O8+11DHB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7530A1F000FF; Thu, 24 Sep 2026 04:51:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790225477; bh=Um2/kTnL9qa9cdtiNQiZbJPZ1lZc2Cob4pDgEa75j8I=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=O8+11DHBT/b/yXb+Sulg0P6i+WtyS1HrL2nksleMmnyb0eryGOfFNB07C2jwsVPaK LUllxppmB47U9dLS6ua43sGFsLkeQHtrx1i62bDtx9rJPpo8yqnZm7QyUxopLSkSxd FKWr3g3wG8WLO+BvgTP0wFD1NRcRQwRTFVGy0rEVVSlYZoDu9UqJxAZuLoDK7ClX+d coACJwcnkSkN5P+ET+syxc3pDgo3omcIiP2aI9i83PH0XOiEngNF4/XRQOU2PIrWgV aSt9G1gbcXCThMDM+QrzCd471ZMeaJCBv9K22UmwqXQ8QPeiIoBdRNjPKBhf4PcWsE l3JPiUXQm+4Tg== From: sashiko-bot@kernel.org Subject: Re: [PATCH] hwmon: (dell-smm) Add Dell 16 DC16250 to fan control whitelist Reply-To: sashiko-reviews@lists.linux.dev To: =?utf-8?b?RW1hbnVlbCDDgXZpbGE=?= Cc: linux-hwmon@vger.kernel.org In-Reply-To: <20260924044829.2889204-1-avilaemanueel@gmail.com> References: <20260924044829.2889204-1-avilaemanueel@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 24 Sep 2026 04:51:16 +0000 Message-Id: <20260924045117.7530A1F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > On the Dell 16 DC16250, the BIOS keeps the CPU fan at its highest state > (~4700 RPM) even when the system is idle at 45 =C2=B0C, and fan speed wri= tes > through pwm1 are overridden by the BIOS within a few seconds. >=20 > The I8K_FAN_30A3_31A3 SMM code pair works on this machine through the > WMI-SMM backend: after writing 1 to pwm1_enable, the fan accepts all > three fan states (0, 128 and 255 via pwm1) and reports matching RPM, > and writing 2 hands control back to the BIOS. >=20 > Tested on BIOS 1.8.1 with kernel 7.1.5 (Pop!_OS 24.04). >=20 > Assisted-by: claude-opus-5-5 > Signed-off-by: Emanuel =C3=81vila Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260924044829.2889= 204-1-avilaemanueel@gmail.com?part=3D1