From patchwork Thu Oct 24 17:12:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 1183340 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="vYq/kGxz"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46zYj2302Mz9sPv for ; Fri, 25 Oct 2019 04:12:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2439944AbfJXRMw (ORCPT ); Thu, 24 Oct 2019 13:12:52 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:48816 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2436815AbfJXRMw (ORCPT ); Thu, 24 Oct 2019 13:12:52 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id AF3DB43B45; Thu, 24 Oct 2019 17:12:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1571937170; x=1573751571; bh=nwRlUMAhBu6065MIPo0iWQpzSMgerOXg0Y1 REgkLLP0=; b=vYq/kGxzNUW7colvoS3WIq6dvHWZ6VJ5yVOfTa6Pdx0fNVKhb26 gJdCgSLxY/+HC0j93JjkaRbtHp6+YrQFoaFe7mzPOHeoOdKuI3GbITOZAJLGkh1e tLLqgvje0NORcbYSqxnqMDUOQK3BzP5GgCKfyslhea3j/KU52l1YGyoI= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PF6N3UKHVgpS; Thu, 24 Oct 2019 20:12:50 +0300 (MSK) Received: from T-EXCH-02.corp.yadro.com (t-exch-02.corp.yadro.com [172.17.10.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id AFBDB43D12; Thu, 24 Oct 2019 20:12:42 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) by T-EXCH-02.corp.yadro.com (172.17.10.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Thu, 24 Oct 2019 20:12:42 +0300 From: Sergey Miroshnichenko To: , CC: Bjorn Helgaas , , Sergey Miroshnichenko Subject: [PATCH v6 18/30] PCI: hotplug: Configure MPS for hot-added bridges during bus rescan Date: Thu, 24 Oct 2019 20:12:16 +0300 Message-ID: <20191024171228.877974-19-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191024171228.877974-1-s.miroshnichenko@yadro.com> References: <20191024171228.877974-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.15.136] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Assure that MPS settings are set up for bridges which are discovered during manually triggered rescan via sysfs. This sequence of bridge init (using pci_rescan_bus()) will be used for pciehp hot-add events when BARs are movable. Signed-off-by: Sergey Miroshnichenko --- drivers/pci/probe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index d0d00cb3e965..94bbdf9b9dc1 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3414,7 +3414,7 @@ static void pci_reassign_root_bus_resources(struct pci_bus *root) unsigned int pci_rescan_bus(struct pci_bus *bus) { unsigned int max; - struct pci_bus *root = bus; + struct pci_bus *root = bus, *child; while (!pci_is_root_bus(root)) root = root->parent; @@ -3435,6 +3435,9 @@ unsigned int pci_rescan_bus(struct pci_bus *bus) pci_assign_unassigned_bus_resources(bus); } + list_for_each_entry(child, &root->children, node) + pcie_bus_configure_settings(child); + pci_bus_add_devices(bus); return max;