From patchwork Fri Dec 18 17:40:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 11982663 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 59728C3527A for ; Fri, 18 Dec 2020 17:42:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3353D23B7D for ; Fri, 18 Dec 2020 17:42:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727375AbgLRRmt (ORCPT ); Fri, 18 Dec 2020 12:42:49 -0500 Received: from mta-02.yadro.com ([89.207.88.252]:38564 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726057AbgLRRms (ORCPT ); Fri, 18 Dec 2020 12:42:48 -0500 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 6EE98413BD; Fri, 18 Dec 2020 17:41:21 +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= 1608313280; x=1610127681; bh=q35EItJkKAw72WYZwl9DiZGp7mbr5pR6nC2 ozTHlueA=; b=OifHQ06ekQ0Vs1fe/NglwdExKO45lWV0aJgW2VA9Q5E7SJts9jb IRaokmcQuo0Amey6SVvNh0So6h3cqJXXz+4fIbI/rfRfCZxbeNlX40dXEQ+MIxY8 FLWWc52k/eRsL/vd/GGKZlJmvAzDuywFYOgtPuJDwHlIj4A7DSFUfeUc= 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 DB9o65GrG6ER; Fri, 18 Dec 2020 20:41:20 +0300 (MSK) Received: from T-EXCH-03.corp.yadro.com (t-exch-03.corp.yadro.com [172.17.100.103]) (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 102ED412EC; Fri, 18 Dec 2020 20:41:09 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) by T-EXCH-03.corp.yadro.com (172.17.100.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Fri, 18 Dec 2020 20:41:08 +0300 From: Sergei Miroshnichenko To: CC: Bjorn Helgaas , Lukas Wunner , Stefan Roese , Andy Lavr , =?utf-8?q?Chris?= =?utf-8?q?tian_K=C3=B6nig?= , David Laight , Rajat Jain , , Sergei Miroshnichenko Subject: [PATCH v9 16/26] PCI: hotplug: Configure MPS after manual bus rescan Date: Fri, 18 Dec 2020 20:40:01 +0300 Message-ID: <20201218174011.340514-17-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201218174011.340514-1-s.miroshnichenko@yadro.com> References: <20201218174011.340514-1-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-03.corp.yadro.com (172.17.100.103) 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()) later will be used for pciehp hot-add events when BAR movement is enabled. Signed-off-by: Sergei 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 964dfa71af22..b8873ee82a4b 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3578,7 +3578,7 @@ 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; @@ -3599,6 +3599,9 @@ 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;