From nobody Sun Jun 14 14:31:20 2026 Received: from canpmsgout06.his.huawei.com (canpmsgout06.his.huawei.com [113.46.200.221]) (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 4488D37B025; Fri, 3 Apr 2026 08:53:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.221 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775206430; cv=none; b=AquOcA1jGTojZMdDCKx89F4x9Ozo2LOYQPblQxs6QmuXlOtbKrj3NGkTZMCCRGi32Iig2ntW2Ny/VoIcqw4MgU4xt9sMViN2zvGkDZOFB/S46/MjeJH9fXe6BJ1At1pa4Ms7JlZp+80+vFge8wwtPwblvw+CHI7wW+gBxTNcpRM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775206430; c=relaxed/simple; bh=7hljSfbCMoe7aotArStlInJGZBHF3UccXe+EzzmK7cw=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ZNmiB6n/yYzNk4eY8pP2wGtrAbyhrrKxjyikdDgK7eG104jpWuC/gNFV0HUfQXm/4oCNnH2jqP4NNYrdofTP62OQ0yxMum12NyTSprF8S1ZpfUyDdOMe0W7tLV+csIG0xTzlRZt4lLVPu8URMUd20juxWH5r79DkD3sTWG+LhvA= 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=FtXXLtRi; arc=none smtp.client-ip=113.46.200.221 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="FtXXLtRi" dkim-signature: v=1; a=rsa-sha256; d=h-partners.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=pl97eqEMyiskpjfdPoPG1e9P8KOX2jBc3sUg0vI9cns=; b=FtXXLtRiIWaGA6TLuC9cuCjD1SOc3ewmpHPj0B56OzkshH4KozGpv3cAk6KhzrXC1cfP/SjX/ +xB/piM0mublGGwSdSeVJLgYQ2JSkKIl+WDeAq82RmnvBbQDTakmasD/yAQMsCjXu1Fq8V6QoV2 bTdHFaQZyvAKh2qkbvAw6M8= Received: from mail.maildlp.com (unknown [172.19.162.223]) by canpmsgout06.his.huawei.com (SkyGuard) with ESMTPS id 4fnC5y0kSdzRhTp; Fri, 3 Apr 2026 16:47:34 +0800 (CST) Received: from dggemv712-chm.china.huawei.com (unknown [10.1.198.32]) by mail.maildlp.com (Postfix) with ESMTPS id 2395340561; Fri, 3 Apr 2026 16:53:45 +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; Fri, 3 Apr 2026 16:53:44 +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 15.2.1544.36; Fri, 3 Apr 2026 16:53:44 +0800 From: Huisong Li To: , CC: , , , , , , , , , , Subject: [PATCH] ACPI: processor: idle: Reset power_setup_done flag on initialization failure Date: Fri, 3 Apr 2026 16:53:43 +0800 Message-ID: <20260403085343.866440-1-lihuisong@huawei.com> X-Mailer: git-send-email 2.33.0 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: kwepems500002.china.huawei.com (7.221.188.17) To kwepemn100009.china.huawei.com (7.202.194.112) Content-Type: text/plain; charset="utf-8" The 'power_setup_done' flag is a key indicator used across the ACPI processor driver to determine if cpuidle are properly configured and available for a given CPU. Currently, this flag is set during the early stages of initialization. However, if the subsequent registration of the cpuidle driver in acpi_processor_register_idle_driver() or the per-CPU device registration in acpi_processor_power_init() fails, this flag remains set. This may lead to some issues where other functions in ACPI idle driver use these flags. Fix this by explicitly resetting this flag to 0 in these error paths. Signed-off-by: Huisong Li --- drivers/acpi/processor_idle.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 2adaee0f32ed..c1cddb4a5887 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1378,6 +1378,7 @@ void acpi_processor_register_idle_driver(void) =20 ret =3D cpuidle_register_driver(&acpi_idle_driver); if (ret) { + pr->flags.power_setup_done =3D 0; pr_debug("register %s failed.\n", acpi_idle_driver.name); return; } @@ -1386,7 +1387,16 @@ void acpi_processor_register_idle_driver(void) =20 void acpi_processor_unregister_idle_driver(void) { + struct acpi_processor *pr; + int cpu; + cpuidle_unregister_driver(&acpi_idle_driver); + for_each_possible_cpu(cpu) { + pr =3D per_cpu(processors, cpu); + if (!pr) + continue; + pr->flags.power_setup_done =3D 0; + } } =20 void acpi_processor_power_init(struct acpi_processor *pr) @@ -1423,6 +1433,7 @@ void acpi_processor_power_init(struct acpi_processor = *pr) */ if (cpuidle_register_device(dev)) { per_cpu(acpi_cpuidle_device, pr->id) =3D NULL; + pr->flags.power_setup_done =3D 0; kfree(dev); } } --=20 2.33.0