From nobody Thu Dec 18 15:27:38 2025 Received: from canpmsgout03.his.huawei.com (canpmsgout03.his.huawei.com [113.46.200.218]) (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 D3A88287245; Mon, 3 Nov 2025 08:42:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.218 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762159372; cv=none; b=FR/o2RFCdefOlEMATH/aKsgKgXRkBaqnN6mjyhdfDCh+nRh6zYSFQQrNcj5d4XJjrOv/lfUatPqTthrEsV+lS6Lk6bc+zUSPf8NnUPmo0eAH8WixtNs4ptNb4txfBsYT7ywlWwD22dnWe2LJHhzV33u3aEM1lL+Gys/nqAbOHv4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762159372; c=relaxed/simple; bh=Eal9+GaBaTK8Emch51Crk0Ut0f2tDLiKgxG1ESeFIvY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tjVYzntqmxjLqeEsEWHkzRQgNPf0ImsQfw4tV/0+zza573TpemW4bY3rHkRp0y2AGy3HCk6AHwmhVyyGvTsXFkOZnQcsGgv815HzQiPGlSFdv0Al87cdxZkQLXyksmhBUQ0eypoZzIs8usL/115g6AHjhe4WhEja8vdbBdqWhHE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=h-partners.com; dkim=pass (1024-bit key) header.d=h-partners.com header.i=@h-partners.com header.b=qYLQ3JNp; arc=none smtp.client-ip=113.46.200.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=h-partners.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=h-partners.com header.i=@h-partners.com header.b="qYLQ3JNp" dkim-signature: v=1; a=rsa-sha256; d=h-partners.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=lJ6ifbD9CdTpPwXjFL/2uF+ta4RpaTrCFVLzkUmeufE=; b=qYLQ3JNp6kx3J46T2Nb7TNxDzJ6gTGSHNy4FlnlXzL/72lUbEEDrbYvdF6g6oM+7uPIHM7Oxm nBT0ApIAeBQhU4EA2CUPXrxtN7wBVHh5Y/XZwnleD6aW1sNtBUbBY1W5/K0OXwQP7prTqfRIboM YNAciNxxmEseqEXJsbQBctM= Received: from mail.maildlp.com (unknown [172.19.163.174]) by canpmsgout03.his.huawei.com (SkyGuard) with ESMTPS id 4d0Q6R01NXzpStT; Mon, 3 Nov 2025 16:41:19 +0800 (CST) Received: from dggemv712-chm.china.huawei.com (unknown [10.1.198.32]) by mail.maildlp.com (Postfix) with ESMTPS id 33EF614020C; Mon, 3 Nov 2025 16:42:46 +0800 (CST) Received: from kwepemn100009.china.huawei.com (7.202.194.112) by dggemv712-chm.china.huawei.com (10.1.198.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 3 Nov 2025 16:42:45 +0800 Received: from localhost.localdomain (10.50.163.32) by kwepemn100009.china.huawei.com (7.202.194.112) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 3 Nov 2025 16:42:45 +0800 From: Huisong Li To: , CC: , , , , , , , , Subject: [PATCH v2 1/7] ACPI: processor: idle: Mark the state as invalid if its entry method is illegal Date: Mon, 3 Nov 2025 16:42:38 +0800 Message-ID: <20251103084244.2654432-2-lihuisong@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20251103084244.2654432-1-lihuisong@huawei.com> References: <20251103084244.2654432-1-lihuisong@huawei.com> 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 X-ClientProxiedBy: kwepems100002.china.huawei.com (7.221.188.206) To kwepemn100009.china.huawei.com (7.202.194.112) Content-Type: text/plain; charset="utf-8" According to ACPI spec, entry method in LPI sub-package must be buffer or integer. And the entry method is very key in cpuidle. So mark the state as invalid. Fixes: a36a7fecfe60 ("ACPI / processor_idle: Add support for Low Power Idle= (LPI) states") Signed-off-by: Huisong Li --- drivers/acpi/processor_idle.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 341825e8ac63..9f1040eac051 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -956,6 +956,9 @@ static int acpi_processor_evaluate_lpi(acpi_handle hand= le, lpi_state->entry_method =3D ACPI_CSTATE_INTEGER; lpi_state->address =3D obj->integer.value; } else { + pr_debug("Entry method of state-%d is illegal, disable it.\n", + state_idx); + lpi_state->flags =3D 0; continue; } =20 --=20 2.33.0