From patchwork Thu Jun 9 14:06:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 580491 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 84F35C43334 for ; Thu, 9 Jun 2022 14:21:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243064AbiFIOUy (ORCPT ); Thu, 9 Jun 2022 10:20:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245375AbiFIOUm (ORCPT ); Thu, 9 Jun 2022 10:20:42 -0400 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0ACF268544; Thu, 9 Jun 2022 07:20:41 -0700 (PDT) Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.0.0) id b3029114fcd8b89a; Thu, 9 Jun 2022 16:20:40 +0200 Received: from kreacher.localnet (unknown [213.134.186.232]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 4C1D766C7CA; Thu, 9 Jun 2022 16:20:39 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Linux PM , Andy Shevchenko , Mika Westerberg , Hans de Goede , Sakari Ailus Subject: [PATCH v1 10/16] ACPI: bus: Introduce acpi_dev_for_each_child_reverse() Date: Thu, 09 Jun 2022 16:06:21 +0200 Message-ID: <2137459.Mh6RI2rZIc@kreacher> In-Reply-To: <1843211.tdWV9SEqCh@kreacher> References: <1843211.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.186.232 X-CLIENT-HOSTNAME: 213.134.186.232 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvfedruddtledgjeduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppedvudefrddufeegrddukeeirddvfedvnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvddufedrudefgedrudekiedrvdefvddphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepjedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegrnhgurhhihidrshhhvghvtghhvghnkhhosehlihhnuhigrdhi nhhtvghlrdgtohhmpdhrtghpthhtohepmhhikhgrrdifvghsthgvrhgsvghrgheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehhuggvghhovgguvgesrhgvughhrghtrdgtohhmpdhrtghpthhtohepshgrkhgrrhhirdgrihhluhhssehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=7 Fuz1=7 Fuz2=7 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Rafael J. Wysocki Make it possible to walk the children of an ACPI device in the revese order by defining acpi_dev_for_each_child_reverse() in analogy with acpi_dev_for_each_child(). Signed-off-by: Rafael J. Wysocki --- drivers/acpi/bus.c | 13 +++++++++++++ include/acpi/acpi_bus.h | 3 +++ 2 files changed, 16 insertions(+) Index: linux-pm/drivers/acpi/bus.c =================================================================== --- linux-pm.orig/drivers/acpi/bus.c +++ linux-pm/drivers/acpi/bus.c @@ -1115,6 +1115,19 @@ int acpi_dev_for_each_child(struct acpi_ return device_for_each_child(&adev->dev, &adwc, acpi_dev_for_one_check); } +int acpi_dev_for_each_child_reverse(struct acpi_device *adev, + int (*fn)(struct acpi_device *, void *), + void *data) +{ + struct acpi_dev_walk_context adwc = { + .fn = fn, + .data = data, + }; + + return device_for_each_child_reverse(&adev->dev, &adwc, + acpi_dev_for_one_check); +} + /* -------------------------------------------------------------------------- Initialization/Cleanup -------------------------------------------------------------------------- */ Index: linux-pm/include/acpi/acpi_bus.h =================================================================== --- linux-pm.orig/include/acpi/acpi_bus.h +++ linux-pm/include/acpi/acpi_bus.h @@ -483,6 +483,9 @@ extern struct bus_type acpi_bus_type; int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data); int acpi_dev_for_each_child(struct acpi_device *adev, int (*fn)(struct acpi_device *, void *), void *data); +int acpi_dev_for_each_child_reverse(struct acpi_device *adev, + int (*fn)(struct acpi_device *, void *), + void *data); /* * Events