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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: synaptics.com X-MS-Exchange-CrossTenant-Network-Message-Id: 600fecfd-183f-44c5-8466-08d88d45f179 X-MS-Exchange-CrossTenant-AuthSource: SN2PR03MB2383.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Nov 2020 11:18:01.8596 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335d1fbc-2124-4173-9863-17e7051a2a0e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9eA5A3mI/cSZICbXNNE0azn6L0q9gRpS3YNgrNOd/DAI24OVn5Ry20VBLNqFPsRddYcv7Bkmu2c1Haa7aiFrfA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR03MB3808 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Some designware based device driver especially host only driver may work well with the default read_dbi/write_dbi/link_up implementation in pcie-designware.c, thus remove the assumption to simplify those drivers. Signed-off-by: Jisheng Zhang --- drivers/pci/controller/dwc/pcie-designware-ep.c | 8 +++----- drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- drivers/pci/controller/dwc/pcie-designware.c | 14 +++++++------- 3 files changed, 11 insertions(+), 13 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index bcd1cd9ba8c8..1c25d8337151 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -434,10 +434,8 @@ static void dw_pcie_ep_stop(struct pci_epc *epc) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - if (!pci->ops->stop_link) - return; - - pci->ops->stop_link(pci); + if (pci->ops && pci->ops->stop_link) + pci->ops->stop_link(pci); } static int dw_pcie_ep_start(struct pci_epc *epc) @@ -445,7 +443,7 @@ static int dw_pcie_ep_start(struct pci_epc *epc) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - if (!pci->ops->start_link) + if (!pci->ops || !pci->ops->start_link) return -EINVAL; return pci->ops->start_link(pci); diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index e1db9056df0b..082ff75b14c4 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -420,7 +420,7 @@ int dw_pcie_host_init(struct pcie_port *pp) dw_pcie_setup_rc(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); From patchwork Fri Nov 20 11:17:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 11920075 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=-15.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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_SANE_2 autolearn=unavailable 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 50C8EC56202 for ; 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Signed-off-by: Jisheng Zhang Acked-by: Jonathan Chocron --- drivers/pci/controller/dwc/pcie-al.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-al.c b/drivers/pci/controller/dwc/pcie-al.c index 7ac8a37d9ce0..36977c48a7ae 100644 --- a/drivers/pci/controller/dwc/pcie-al.c +++ b/drivers/pci/controller/dwc/pcie-al.c @@ -322,9 +322,6 @@ static const struct dw_pcie_host_ops al_pcie_host_ops = { .host_init = al_pcie_host_init, }; -static const struct dw_pcie_ops dw_pcie_ops = { -}; - static int al_pcie_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -342,7 +339,6 @@ static int al_pcie_probe(struct platform_device *pdev) return -ENOMEM; pci->dev = dev; - pci->ops = &dw_pcie_ops; pci->pp.ops = &al_pcie_host_ops; al_pcie->pci = pci;