From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 83696C4360F for ; Mon, 11 Mar 2019 13:31:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4A5E822314 for ; Mon, 11 Mar 2019 13:31:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="IB/CsufX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727581AbfCKNbe (ORCPT ); Mon, 11 Mar 2019 09:31:34 -0400 Received: from mta-01.yadro.com ([89.207.88.251]:50916 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727388AbfCKNbe (ORCPT ); Mon, 11 Mar 2019 09:31:34 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 9D7CF419DA; Mon, 11 Mar 2019 13:31:32 +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= 1552311091; x=1554125492; bh=A5ubc+8NetLWy7BN9IG3hEbaDHSG7hHtYX/ dxkrS/A4=; b=IB/CsufXEAgKUwkEXbUyAL/Nu4TAlf7imHHVfmEvHMYhlf6lc+G 1Utqi53yvyxgidRUw8atJ7X1rgRPSJ7DKtz3JlGklB5D8FMXIxXjgSN3t8Ljq/8m IcDZZo0dCFKqGkHWzInuprYRriTrHwH8Gqcpnfh2s8BasB0dJECipcko= 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 LYMd0zxOCJVY; Mon, 11 Mar 2019 16:31:31 +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 850994193F; Mon, 11 Mar 2019 16:31:30 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.60) 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; Mon, 11 Mar 2019 16:31:29 +0300 From: Sergey Miroshnichenko To: , CC: Bjorn Helgaas , , Sergey Miroshnichenko Subject: [PATCH RFC v4 01/21] PCI: Fix writing invalid BARs during pci_restore_state() Date: Mon, 11 Mar 2019 16:31:02 +0300 Message-ID: <20190311133122.11417-2-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190311133122.11417-1-s.miroshnichenko@yadro.com> References: <20190311133122.11417-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.17.15.60] 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 If BAR movement has happened (due to PCIe hotplug) after pci_save_state(), the saved addresses will become outdated. Restore them the most recently calculated values, not the ones stored in an arbitrary moment. Signed-off-by: Sergey Miroshnichenko --- drivers/pci/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 7c1b362f599a..f006068be209 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1376,7 +1376,7 @@ static void pci_restore_config_space(struct pci_dev *pdev) if (pdev->hdr_type == PCI_HEADER_TYPE_NORMAL) { pci_restore_config_space_range(pdev, 10, 15, 0, false); /* Restore BARs before the command register. */ - pci_restore_config_space_range(pdev, 4, 9, 10, false); + pci_restore_bars(pdev); pci_restore_config_space_range(pdev, 0, 3, 0, false); } else if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE) { pci_restore_config_space_range(pdev, 12, 15, 0, false); -- 2.20.1