From patchwork Sun Apr 21 19:09:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 13637502 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD933C4345F for ; Sun, 21 Apr 2024 19:10:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=turoN+SYXuH/L5sD8CYHt6D+pV6FWO1i47830mzE3BY=; b=ZkeBUFa/IuBoQq UN6gFr6YkNTXhJo9AXGRSA4zCUq0DRPOiDSf0p1NFkdrBLhWjs3nnoW35s9UeH5gLeqiVWO6hOFRZ 6IgoA5ZVpzGeWtl1kjQdP+euSy879WZedBAICbOT/bg2QHrWA4hwqv3kZLzBD0as3hGQnczyI4YaC 7OykUvsEzxaJNxYrzTqWZmMfQ5xgVmkKsxEjMZX8lGAzwVqnLzIXiQIBcK4sqqCsG5K203fKqnqjK O22YRTAoGs6+TpB1q05lJ3CjXMVVNNFt6QURNeZo/RFKyqSxZmWmirjyNnhqeGOM8bwU9BxmDMQm+ AUowkXsRO/cU/VV/14cw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rycZb-0000000B8g9-1xjS; Sun, 21 Apr 2024 19:09:59 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rycZG-0000000B8XE-2sgz for linux-arm-kernel@lists.infradead.org; Sun, 21 Apr 2024 19:09:39 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5069560C17; Sun, 21 Apr 2024 19:09:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA839C2BD11; Sun, 21 Apr 2024 19:09:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713726573; bh=X4v6M4Hrc9fFqCwB6oJpOXB8AHDIlZvB7tTwVOjiIBQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i5oI+s6nKWpN0z3IPZBfeH924VIQIwoJZRC9V3Qr/WQ77udlfzgw42ev297ij29eZ OSZ0HZi3BRcBrYG1chpvFn9oKKB6jDegDUgL4KDux2N6SsBWgwZo3vy3NGn0tIJs1a YOXYRpuz0d+90tTAigwSsaYqZgDO/yX6BOG+HKqHjqTUVHRKjtX+JUrABiJz4+vpS5 SF12280Wl6LBSxX3uJvhzgyBLrp55BbaTjVvs1E6hYuuf0IE1hraZf585B8IQ6evOz NcQOdShN+JnZCKO/xmFNHuSTxRaoB7280FLU5rPW9XZorQtD1MWa+HO1xgyiJgrzXX wnevBopS+8bFg== From: Bjorn Helgaas To: Vidya Sagar Cc: "Rafael J . Wysocki" , Len Brown , Will Deacon , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Frank Rowand , Thierry Reding , Jonathan Hunter , Krishna Thota , Manikanta Maddireddy , Vidya Sagar , linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v7-incomplete 3/3] PCI: Unify ACPI and DT 'preserve config' support Date: Sun, 21 Apr 2024 14:09:14 -0500 Message-Id: <20240421190914.374399-4-helgaas@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240421190914.374399-1-helgaas@kernel.org> References: <20240418174043.3750240-1-vidyas@nvidia.com> <20240421190914.374399-1-helgaas@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240421_120938_800125_FF062ED2 X-CRM114-Status: UNSURE ( 8.70 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Bjorn Helgaas --- drivers/pci/probe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index ee086d029450..2c232c22d6af 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -894,6 +894,9 @@ static bool pci_preserve_config(struct pci_host_bridge *host_bridge) if (pci_acpi_preserve_config(host_bridge)) return true; + if (host_bridge->dev.parent && host_bridge->dev.parent->of_node) + return of_pci_preserve_config(host_bridge->dev.parent->of_node); + return false; }