From patchwork Fri Jan 8 09:36:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Z.Q. Hou" X-Patchwork-Id: 12006175 X-Patchwork-Delegate: lorenzo.pieralisi@arm.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,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 EC4CDC4332B for ; Fri, 8 Jan 2021 09:29:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9EF223435 for ; Fri, 8 Jan 2021 09:29:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728380AbhAHJ2v (ORCPT ); Fri, 8 Jan 2021 04:28:51 -0500 Received: from mail-eopbgr80055.outbound.protection.outlook.com ([40.107.8.55]:2579 "EHLO EUR04-VI1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728184AbhAHJ2u (ORCPT ); Fri, 8 Jan 2021 04:28:50 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Z03ka9aMnt6MEuilGsYGVSarxT/AwB+tIS1hlCLMkIGPrNpFyWL1Y+juawmBvC1ywAzOdqHRRVK0yFLdusKKzIg8k3K2hz6espHV/YBi6O1VBcBEfdQarV1SchRTYmmTZiaT3yxz2hGXhk+zJmQZ0dmDcHkyWW0bckTjwKK8T2phtfdN4Dp0EZuNKOm+HUY2zkSUtW9N8qeZN/wnPdBuwWAHYjAUHncRBOizSWxXHVRHvC3Jjvr4KAcxyCinuRVUwDXm002f3FsbZxh1j7I2x2QF+pHtvNqvY45TBPstMP5mQjGmin6h43Qb5b0EyiL70dBquMSRyfrpFylmknUy/w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IkZKiJX8rSbc9Gl4Ms4Dko37q+XscFwYScgcYSaLS8Q=; b=ms82M7gyQqARA7yDRJISKmCRr5/7qN7/LVLv5NE4KUq37kTkANAgTcCN5HQVroVnoSHF2UBm3a9VPmSlu35MDTtuFO+XfhAGh6EXDZKuo3sLHZLBWhTCLaQf2WzydG6bxjuoStzDlc+znCxhW+3vjOdJfdgwgI0UJWjvaJ2qFTlyE2CXXoynaMOXQNRC3kO39pFhj/t4bbGimHrV2fWUmrPTeIy9nrFoS/icePysCfCF85uKYYVIb8aP2hmoDJBZQ++xsIpBIZsLGd6oBJaG/J5+XRhnU4ums1Cqs05GnS5B7gNYCkzBAXP0YZ72P9Ro9uWTBRalF+o0BLGxjjkcQA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=IkZKiJX8rSbc9Gl4Ms4Dko37q+XscFwYScgcYSaLS8Q=; b=JV+BkBuVLcor1KbJW1tQsIYW27Ip6LbB5BJl23YXHa1iBdezTxdlA/I3jposSlfO3IyBw9gUBWeBmw9yHdbPaxj0AN4vDVib0cFgSsYjAf7eRGUWLbxCEMMgKHzHGpjAOBveE4sSJ5criXInqJh9B6gLEmTO2LRT5CPjT/Fc07k= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=nxp.com; Received: from HE1PR0402MB3371.eurprd04.prod.outlook.com (2603:10a6:7:85::27) by HE1PR0401MB2652.eurprd04.prod.outlook.com (2603:10a6:3:83::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3721.20; Fri, 8 Jan 2021 09:27:27 +0000 Received: from HE1PR0402MB3371.eurprd04.prod.outlook.com ([fe80::3194:64d6:5a70:a91d]) by HE1PR0402MB3371.eurprd04.prod.outlook.com ([fe80::3194:64d6:5a70:a91d%4]) with mapi id 15.20.3721.024; Fri, 8 Jan 2021 09:27:27 +0000 From: Zhiqiang Hou To: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, lorenzo.pieralisi@arm.com, robh+dt@kernel.org, bhelgaas@google.com, shawnguo@kernel.org, leoyang.li@nxp.com, gustavo.pimentel@synopsys.com Cc: minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, Hou Zhiqiang Subject: [PATCHv3 1/7] PCI: dwc: Fix a bug of the case dw_pci->ops is NULL Date: Fri, 8 Jan 2021 17:36:04 +0800 Message-Id: <20210108093610.28595-2-Zhiqiang.Hou@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210108093610.28595-1-Zhiqiang.Hou@nxp.com> References: <20210108093610.28595-1-Zhiqiang.Hou@nxp.com> X-Originating-IP: [119.31.174.73] X-ClientProxiedBy: MAXPR0101CA0019.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::29) To HE1PR0402MB3371.eurprd04.prod.outlook.com (2603:10a6:7:85::27) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.73) by MAXPR0101CA0019.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3742.6 via Frontend Transport; Fri, 8 Jan 2021 09:27:22 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 2759dbaa-bcd9-4c04-fc7e-08d8b3b79da8 X-MS-TrafficTypeDiagnostic: HE1PR0401MB2652: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1284; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: yuIvL+k+N0J1OcRiRGo8mnz23E8UCo9J680XwroS7KgU7zsyNhIrt54laZvqz04HzVUzSsoJVPnDpukO8nU/gmfB2JNCne9YyTES9SmbMILPf2H+kzHgHTqJZSZmIA2jcdbHUeEMKhVeuuREpT5Y6bibMpsmsln27R4fna2sMq/Pzr77K0VbvWd5/9bDS23q/0IomxR/+H/U7Z06z3p6eQN6bvmRr36QQjkqTzL6pJdUpnTFwvVPfZmLFKuQZJ1yezd2xOhdf9+PE5sYLl6YkfERcpmM7DBMhfg15Z0xyc0Zpjav+LoROV3acnkG2pGmuwzm0yxBH/32hEHSDkjYGjer8s/qMBMj0Nrwqlw+t/20iMg6GVexnxCZnUYFmnnIUY75fg58fIS1xxgaKbdVZUmUYPQF6W7xmhrz04VD3cwfVzCrPVPpjuR2Vcf++8AOsplz9WpFL/bP7Ffifu6AcA== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:HE1PR0402MB3371.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(346002)(376002)(136003)(39860400002)(366004)(396003)(316002)(478600001)(6506007)(6486002)(4326008)(52116002)(2616005)(36756003)(69590400011)(8936002)(66556008)(956004)(921005)(6512007)(1076003)(66476007)(5660300002)(66946007)(26005)(2906002)(6666004)(16526019)(8676002)(83380400001)(186003)(86362001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthSource: HE1PR0402MB3371.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jan 2021 09:27:27.6980 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-Network-Message-Id: 2759dbaa-bcd9-4c04-fc7e-08d8b3b79da8 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: WDhdsTlTnMU94R149aK6VvrKibZdYRhdRtt/UB1sFwvBp9itiOqhwFdoWUy4ix1DuOVK/AzDY9dFJB4aq0lJzA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0401MB2652 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Hou Zhiqiang The dw_pci->ops may be a NULL, and fix it by adding one more check. Signed-off-by: Hou Zhiqiang Reviewed-by: Rob Herring Acked-by: Gustavo Pimentel --- V3: - Rebased against the latest code base drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- drivers/pci/controller/dwc/pcie-designware.c | 14 +++++++------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 516b151e0ef3..0413284fdd93 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -429,7 +429,7 @@ int dw_pcie_host_init(struct pcie_port *pp) dw_pcie_setup_rc(pp); dw_pcie_msi_init(pp); - if (!dw_pcie_link_up(pci) && pci->ops->start_link) { + if (!dw_pcie_link_up(pci) && pci->ops && pci->ops->start_link) { ret = pci->ops->start_link(pci); if (ret) goto err_free_msi; diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 645fa1892375..cf895c12f71f 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -141,7 +141,7 @@ u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size) int ret; u32 val; - if (pci->ops->read_dbi) + if (pci->ops && pci->ops->read_dbi) return pci->ops->read_dbi(pci, pci->dbi_base, reg, size); ret = dw_pcie_read(pci->dbi_base + reg, size, &val); @@ -156,7 +156,7 @@ void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val) { int ret; - if (pci->ops->write_dbi) { + if (pci->ops && pci->ops->write_dbi) { pci->ops->write_dbi(pci, pci->dbi_base, reg, size, val); return; } @@ -171,7 +171,7 @@ void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val) { int ret; - if (pci->ops->write_dbi2) { + if (pci->ops && pci->ops->write_dbi2) { pci->ops->write_dbi2(pci, pci->dbi_base2, reg, size, val); return; } @@ -186,7 +186,7 @@ static u32 dw_pcie_readl_atu(struct dw_pcie *pci, u32 reg) int ret; u32 val; - if (pci->ops->read_dbi) + if (pci->ops && pci->ops->read_dbi) return pci->ops->read_dbi(pci, pci->atu_base, reg, 4); ret = dw_pcie_read(pci->atu_base + reg, 4, &val); @@ -200,7 +200,7 @@ static void dw_pcie_writel_atu(struct dw_pcie *pci, u32 reg, u32 val) { int ret; - if (pci->ops->write_dbi) { + if (pci->ops && pci->ops->write_dbi) { pci->ops->write_dbi(pci, pci->atu_base, reg, 4, val); return; } @@ -273,7 +273,7 @@ static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no, { u32 retries, val; - if (pci->ops->cpu_addr_fixup) + if (pci->ops && pci->ops->cpu_addr_fixup) cpu_addr = pci->ops->cpu_addr_fixup(pci, cpu_addr); if (pci->iatu_unroll_enabled) { @@ -481,7 +481,7 @@ int dw_pcie_link_up(struct dw_pcie *pci) { u32 val; - if (pci->ops->link_up) + if (pci->ops && pci->ops->link_up) return pci->ops->link_up(pci); val = readl(pci->dbi_base + PCIE_PORT_DEBUG1);