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: 1925924 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=i5oI+s6n; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45d1:ec00::1; helo=ny.mirrors.kernel.org; envelope-from=linux-pci+bounces-6503-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org [IPv6:2604:1380:45d1:ec00::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4VMydL0zbXz1yP2 for ; Mon, 22 Apr 2024 05:10:30 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 5E84D1C2099F for ; Sun, 21 Apr 2024 19:10:28 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DE6E844C8C; Sun, 21 Apr 2024 19:09:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="i5oI+s6n" X-Original-To: linux-pci@vger.kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 AF417446D6; Sun, 21 Apr 2024 19:09:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713726573; cv=none; b=QHvcG8OY17JlhTgGn9clQK7f2BfwmRvqYZ8xE2KlkQzkh+9WPOrXourKVvUy+Dd2At8vBrrCcEPUjec6mEO8DrrQjES8o4L92Q9MyL0/qfyRx6S/ckfiwuN3ng5pKCZ7EsOZ6agIV0hv7IjKfqIwUznHCixPoSN8r78RYoSePb0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713726573; c=relaxed/simple; bh=X4v6M4Hrc9fFqCwB6oJpOXB8AHDIlZvB7tTwVOjiIBQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=VEf+a4i6mjXBhHQtencuGd6/Di7h7tGlCPlLTHxJ3Sg+AyR/CO5rxoZBIrk8elPncIOBQcRneFyNei8u/W15zFS278Ea1Q/evBteFDRytb9QiMch3Eo/ud9nyoFX3Elke0Zw8lZgUKoy7xCZMjws6ReYlvk3lgcsjEPIwB1Lvh8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=i5oI+s6n; arc=none smtp.client-ip=10.30.226.201 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> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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; }