From nobody Sun Feb 8 14:53:01 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6D73C310762; Sat, 10 Jan 2026 11:58:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768046334; cv=none; b=qbeDSiBkk1Rh1sAKRp6EbB6ZsGB5hM4f6MfejGm7NX/PboehoVNiceDz4Ig/Od4UlOZuFAPNQu8ZEjVE7QhqcvUaoGI8j4vQi5cJv0GWniTzxOr8fcKAo+UFLK3vuD4oChECrEQbDU14MbDRxt9hWu1zUGsf4xGAN71ZRN5m8Ss= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768046334; c=relaxed/simple; bh=FCOWl4yw+VMo5TGGk5bY/Pb9NJpiUs0WNN1ZgzgWjX4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pNMpJXRjt5gzik3yjkJl128F6F+uJlGG2YVfKsP/UBg+WzOj0l3phJeBtNnm4N5jH+rHBg5cmsGq/sWzXHjMuQgiusLkvCEYiS1qU8Cxfe5CWGaekMl5DcVf1gycmPtuihYNPM/SSdARGowVRVkjbKgPtiOrcD8b3lrpCC8m+BE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rEQ2yD5S; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rEQ2yD5S" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19D6FC4CEF1; Sat, 10 Jan 2026 11:58:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768046334; bh=FCOWl4yw+VMo5TGGk5bY/Pb9NJpiUs0WNN1ZgzgWjX4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rEQ2yD5SP0B7N9u67uLOGw66knf4yk7Tn7hgTTZ5tMUhUcbJXhxiN8YQ7Nr07SFe2 Lm6MU7cL1erkfZfb+WrMYUDgyk5GoWz+1lODbjV54nKrz9+XUekKnzXAHzxF+KdM68 DFVTpmWusVoIIC8zgzrXKtM8cgUbjXfATXEZzSToaXb0saZCJQvSbV9ZLwFr71tA8U CdmdZLz41mFvC9+XEazdCbF+1nrjk5/0xrxv587v59jz/CtJqbKpA1eMMoE6UWBG6m +UBdCfL4Lhgey3zGLMuPDLl6VzQzCZsZC876LyNOCKgO4W2yowEBKLeAxPRO8GhfOJ EO6nA6ykhbEfg== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Linux PM , Todd Brandt , Xi Pardee Subject: [PATCH v1 1/2] ACPI: PM: Let acpi_dev_pm_attach() skip devices without ACPI PM Date: Sat, 10 Jan 2026 12:57:00 +0100 Message-ID: <5050298.GXAFRqVoOG@rafael.j.wysocki> Organization: Linux Kernel Development In-Reply-To: <4715380.LvFx2qVVIh@rafael.j.wysocki> References: <4715380.LvFx2qVVIh@rafael.j.wysocki> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Rafael J. Wysocki It is pointless to attach the generic ACPI PM domain to devices whose ACPI companions don't support ACPI power management and don't have a wakeup GPE, so update acpi_dev_pm_attach() to skip such devices. No intentional functional impact. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/device_pm.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -1457,6 +1457,15 @@ int acpi_dev_pm_attach(struct device *de return 0; =20 /* + * Skip devices whose ACPI companions don't support power management and + * don't have a wakeup GPE. + */ + if (!acpi_device_power_manageable(adev) && !acpi_device_can_wakeup(adev))= { + dev_dbg(dev, "No ACPI power management or wakeup GPE\n"); + return 0; + } + + /* * Only attach the power domain to the first device if the * companion is shared by multiple. This is to prevent doing power * management twice.