From patchwork Fri Apr 26 13:51:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13644858 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 D804A1482EF; Fri, 26 Apr 2024 13:55:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714139706; cv=none; b=osSJlDX2roYhG5K/tZXnSwj2RyrqKfnAeMkQYnF4f8FhT75TwMQPTlXCkSkqPMkxtCV54Bqv4UpyvF6CLB0tWjNQoqq3g6f3NZZpCLR9jvpAs17BLCjrYsBPc++qN/rgiQm9WDt2cQjWnGDc+AkFMnPftDigrWrvY8tDR7AgFqE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714139706; c=relaxed/simple; bh=Qd27B0CcTyL73Pi9Pcj+U7bKKa7uHGvRH9GI7EG3dGU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Esh829Fy9qkI3tb//2RsjzMNpWsSlDzxVp7NpqoxxRbBt0x6BxlUiP+JxXpVDAw6HKUxJ6qNOemXptSgevyJyMg5JWCkiFgCE2zN4anKsB0XaYHhDzLxbvS7H6fAc//fX9J0v4FxrjSUYKnE6gOZhLg3P9IUhQzp2uA1NRpO5cE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4VQvNq0Fblz6DBLn; Fri, 26 Apr 2024 21:54:51 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id AC288140A87; Fri, 26 Apr 2024 21:55:02 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Fri, 26 Apr 2024 14:55:01 +0100 From: Jonathan Cameron To: Thomas Gleixner , Peter Zijlstra , , , , , , , , , Russell King , "Rafael J . Wysocki" , Miguel Luis , James Morse , Salil Mehta , Jean-Philippe Brucker , Catalin Marinas , Will Deacon , Marc Zyngier , Hanjun Guo CC: Ingo Molnar , Borislav Petkov , Dave Hansen , , , , Lorenzo Pieralisi , Sudeep Holla Subject: [PATCH v8 07/16] ACPI: scan: switch to flags for acpi_scan_check_and_detach() Date: Fri, 26 Apr 2024 14:51:17 +0100 Message-ID: <20240426135126.12802-8-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240426135126.12802-1-Jonathan.Cameron@huawei.com> References: <20240426135126.12802-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: lhrpeml500002.china.huawei.com (7.191.160.78) To lhrpeml500005.china.huawei.com (7.191.163.240) Precursor patch adds the ability to pass a uintptr_t of flags into acpi_scan_check_and detach() so that additional flags can be added to indicate whether to defer portions of the eject flow. The new flag follows in the next patch. Acked-by: Rafael J. Wysocki Reviewed-by: Hanjun Guo Reviewed-by: Gavin Shan Tested-by: Miguel Luis Signed-off-by: Jonathan Cameron --- v8: No change (tags picked up) --- drivers/acpi/scan.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 7c157bf92695..fb5427caf0f4 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -244,13 +244,16 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) return 0; } -static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) +#define ACPI_SCAN_CHECK_FLAG_STATUS BIT(0) + +static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p) { struct acpi_scan_handler *handler = adev->handler; + uintptr_t flags = (uintptr_t)p; - acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check); + acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, p); - if (check) { + if (flags & ACPI_SCAN_CHECK_FLAG_STATUS) { acpi_bus_get_status(adev); /* * Skip devices that are still there and take the enabled @@ -288,7 +291,9 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) static void acpi_scan_check_subtree(struct acpi_device *adev) { - acpi_scan_check_and_detach(adev, (void *)true); + uintptr_t flags = ACPI_SCAN_CHECK_FLAG_STATUS; + + acpi_scan_check_and_detach(adev, (void *)flags); } static int acpi_scan_hot_remove(struct acpi_device *device) @@ -2600,7 +2605,9 @@ EXPORT_SYMBOL(acpi_bus_scan); */ void acpi_bus_trim(struct acpi_device *adev) { - acpi_scan_check_and_detach(adev, NULL); + uintptr_t flags = 0; + + acpi_scan_check_and_detach(adev, (void *)flags); } EXPORT_SYMBOL_GPL(acpi_bus_trim);