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dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LY0PR12MB257519.namprd12.prod.outlook.com (2603:10b6:404:22b::7) by PH7PR12MB7164.namprd12.prod.outlook.com (2603:10b6:510:203::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.22; Tue, 3 Nov 2026 04:29:52 +0000 Received: from LY0PR12MB257519.namprd12.prod.outlook.com ([fe80::89e:d21:20ab:ae5a]) by LY0PR12MB257519.namprd12.prod.outlook.com ([fe80::89e:d21:20ab:ae5a%5]) with mapi id 15.21.0569.011; Tue, 3 Nov 2026 04:29:51 +0000 Message-ID: Date: Tue, 3 Nov 2026 09:59:42 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 4/4] PCI: tegra194: Add PCI_ENDPOINT dependency To: Niklas Cassel Cc: "jingoohan1@gmail.com" , "mani@kernel.org" , "lpieralisi@kernel.org" , "kwilczynski@kernel.org" , "bhelgaas@google.com" , "linux-pci@vger.kernel.org" , "robh@kernel.org" , "thierry.reding@kernel.org" , Jon Hunter , Vidya Sagar , "linux-kernel@vger.kernel.org" , "linux-tegra@vger.kernel.org" , kernel test robot References: <20261102111450.4010818-1-mmaddireddy@nvidia.com> <20261102111450.4010818-5-mmaddireddy@nvidia.com> Content-Language: en-US X-Nvconfidentiality: public From: Manikanta Maddireddy In-Reply-To: Content-Type: text/plain; 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This function >> is only declared when CONFIG_PCI_ENDPOINT is enabled and has no stub >> when endpoint support is disabled. >> >> Add a PCI_ENDPOINT dependency to ensure that the endpoint framework is >> available whenever the Tegra194 PCIe driver is built. >> >> Fixes: bf644226574e ("PCI: tegra194: Notify Endpoint functions on PERST# assert") > > Where is this SHA1? I can't seem to find it in the PCI tree. > > >> Reported-by: kernel test robot >> Closes: https://lore.kernel.org/oe-kbuild-all/202610230923.2lf3BsLs-lkp@intel.com/ >> Signed-off-by: Manikanta Maddireddy >> --- >> Changes V2 -> V3: >> - New patch in v3: require PCI_ENDPOINT for pci_epc_linkdown(), added to >> the PERST# assertion handler, to be declared when the driver is built. >> >> drivers/pci/controller/dwc/Kconfig | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig >> index 0a0d56fcf0ac..704134684900 100644 >> --- a/drivers/pci/controller/dwc/Kconfig >> +++ b/drivers/pci/controller/dwc/Kconfig >> @@ -245,6 +245,7 @@ config PCIE_TEGRA194_HOST >> tristate "NVIDIA Tegra194 (and later) PCIe controller (host mode)" >> depends on (ARCH_TEGRA && ARM64) || COMPILE_TEST >> depends on PCI_MSI >> + depends on PCI_ENDPOINT > > This looks wrong to me. > > If you look at: > include/linux/pci-epc.h > > you can see that there are stubs already for e.g.: > pci_epc_init_notify() and pci_epc_deinit_notify(). > > $ git grep pci_epc_init_notify > drivers/pci/controller/cadence/pcie-cadence-ep.c: pci_epc_init_notify(epc); > drivers/pci/controller/dwc/pci-dra7xx.c: pci_epc_init_notify(ep->epc); > drivers/pci/controller/dwc/pci-imx6.c: pci_epc_init_notify(ep->epc); > drivers/pci/controller/dwc/pci-keystone.c: pci_epc_init_notify(pci->ep.epc); > drivers/pci/controller/dwc/pci-layerscape-ep.c: pci_epc_init_notify(pci->ep.epc); > drivers/pci/controller/dwc/pcie-artpec6.c: pci_epc_init_notify(pci->ep.epc); > drivers/pci/controller/dwc/pcie-designware-plat.c: pci_epc_init_notify(pci->ep.epc); > drivers/pci/controller/dwc/pcie-dw-rockchip.c: pci_epc_init_notify(rockchip->pci.ep.epc); > drivers/pci/controller/dwc/pcie-keembay.c: pci_epc_init_notify(pci->ep.epc); > drivers/pci/controller/dwc/pcie-qcom-ep.c: pci_epc_init_notify(pcie_ep->pci.ep.epc); > drivers/pci/controller/dwc/pcie-rcar-gen4.c: pci_epc_init_notify(ep->epc); > drivers/pci/controller/dwc/pcie-stm32-ep.c: pci_epc_init_notify(ep->epc); > drivers/pci/controller/dwc/pcie-tegra194.c: pci_epc_init_notify(ep->epc); > drivers/pci/controller/dwc/pcie-uniphier-ep.c: pci_epc_init_notify(priv->pci.ep.epc); > drivers/pci/controller/pcie-rcar-ep.c: pci_epc_init_notify(epc); > drivers/pci/controller/pcie-rockchip-ep.c: pci_epc_init_notify(epc); > drivers/pci/endpoint/pci-epc-core.c: * pci_epc_init_notify() - Notify the EPF device that EPC device initialization > drivers/pci/endpoint/pci-epc-core.c:void pci_epc_init_notify(struct pci_epc *epc) > drivers/pci/endpoint/pci-epc-core.c:EXPORT_SYMBOL_GPL(pci_epc_init_notify); > include/linux/pci-epc.h:void pci_epc_init_notify(struct pci_epc *epc); > include/linux/pci-epc.h:static inline void pci_epc_init_notify(struct pci_epc *epc) > > I suggest that you just add a stub for pci_epc_linkdown(). > > > Kind regards, > Niklas Ok, I will add stub function and send v4 series. I will wait for few days for others to review v3 before sending v4. - Manikanta -- nvpublic