From patchwork Fri Aug 27 08:31:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huacai Chen X-Patchwork-Id: 12461567 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A68BFC432BE for ; Fri, 27 Aug 2021 08:36:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8F7FE604D7 for ; Fri, 27 Aug 2021 08:36:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244588AbhH0Igx (ORCPT ); Fri, 27 Aug 2021 04:36:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:45322 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244471AbhH0Igw (ORCPT ); Fri, 27 Aug 2021 04:36:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6E2C960EB3; Fri, 27 Aug 2021 08:36:02 +0000 (UTC) From: Huacai Chen To: David Airlie , Daniel Vetter , Bjorn Helgaas Cc: linux-pci@vger.kernel.org, dri-devel@lists.freedesktop.org, Xuefeng Li , Huacai Chen , Huacai Chen Subject: [PATCH V4 07/10] PCI/VGA: Split out vga_arb_update_default_device() Date: Fri, 27 Aug 2021 16:31:26 +0800 Message-Id: <20210827083129.2781420-8-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210827083129.2781420-1-chenhuacai@loongson.cn> References: <20210827083129.2781420-1-chenhuacai@loongson.cn> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org If there's no default VGA device, and we find a VGA device that owns the legacy VGA resources, we make that device the default. Split this logic out from vga_arbiter_add_pci_device() into a new function, vga_arb_update_default_device(). [bhelgaas: split another piece to separate patch] Signed-off-by: Huacai Chen Signed-off-by: Bjorn Helgaas --- drivers/pci/vgaarb.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c index a6a5864ff538..4cecb599f5ed 100644 --- a/drivers/pci/vgaarb.c +++ b/drivers/pci/vgaarb.c @@ -577,6 +577,21 @@ static bool vga_arb_integrated_gpu(struct device *dev) } #endif +static void vga_arb_update_default_device(struct vga_device *vgadev) +{ + struct pci_dev *pdev = vgadev->pdev; + + /* + * If we don't have a default VGA device yet, and this device owns + * the legacy VGA resources, make it the default. + */ + if (!vga_default_device() && + ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)) { + vgaarb_info(&pdev->dev, "setting as boot VGA device\n"); + vga_set_default_device(pdev); + } +} + /* * Rules for using a bridge to control a VGA descendant decoding: if a bridge * has only one VGA descendant then it can be used to control the VGA routing @@ -704,15 +719,7 @@ static bool vga_arbiter_add_pci_device(struct pci_dev *pdev) bus = bus->parent; } - /* Deal with VGA default device. Use first enabled one - * by default if arch doesn't have it's own hook - */ - if (!vga_default_device() && - ((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK)) { - vgaarb_info(&pdev->dev, "setting as boot VGA device\n"); - vga_set_default_device(pdev); - } - + vga_arb_update_default_device(vgadev); vga_arbiter_check_bridge_sharing(vgadev); /* Add to the list */