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Sun, 8 Apr 2018 20:17:58 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Niklas Cassel , Bjorn Helgaas , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 050/189] PCI: Add dummy pci_irqd_intx_xlate() for CONFIG_PCI=n build Thread-Topic: [PATCH AUTOSEL for 4.15 050/189] PCI: Add dummy pci_irqd_intx_xlate() for CONFIG_PCI=n build Thread-Index: AQHTz5gjWLeRjxDN3UqqqcrGMFGoMw== Date: Mon, 9 Apr 2018 00:17:25 +0000 Message-ID: <20180409001637.162453-50-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1048;7:WFguYYt2dvVAh7e6lJbdLJIPeyQTSm9hH0xhLkzftp6pFgh0W95SaAbcX2/nFmV/+8n5dlr+9zm0aHLvZ3W69pVstU3U3nfIEMALoe4DA+CPrUaobvuKspN65QpkhAcgN3Jdo5dQFetDH1NMeNujxQaFlKGzsZ7o918cJ4irk532P6WPMpirQOjvFj6+DOMwSPn6/v7uzmBZEF3LQ2sTOgnvKRijeKUAndPwv9sZN1W6hIHoi0lhwSWtrupCAT8b;20:dSBdeamUVS2a4+li5uB/8hCEmcdBK99Rj5pw1p2j5fnWUDXzG8yYG1nB6PXRA9k0cysgNNxAEbGyJd1jZaJ/Uq0H3eBsAvXh3nJXjmey+mOl48zo4aQvvGNYofkCvTQHRZTRfvytwl/GyhICPylM1L8hM/ZKheM4+CymUk+v27M= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 2cdca266-e026-4955-1088-08d59daf5572 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1048; 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x-microsoft-antispam-message-info: V2XGh4lQiiEQRdhrmZ14AAQKVk3OFJr34uGCSUngWe3bT14ei36AQ7uKC+KqCcmDaI41FcNScHoqZGxOSZB/UbxkKM9ep+QFLUS9vWaVGzkYicTZ25HJMpDsT/dnp6ghSAfjqot0W9LBvnOMqInb1qFPiSvFWagtz8tQa2/QHJn+SZGqB8mIoi+OzxU40XZr+iee9YM3zo8cUC/bKPR7rrLoUCI7XM4h4jeSvCUO8EKuaT95JdwiXlVKLwry4RxxNSTyiWMLqVqzLEAEv5N55C0abhAsze0JB29Fhux0SBCAGwoPbIDJO40TF81W7YuhEK41yFWbD6GWQOBEa6TdavX08YHnwv27ds7yLzoKTFogtsS+XWITGJfg05wRsf/6n9a9Q14KpBDRdJ+XiwAvW6Z1554rI2RPyouuayr5Flk= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2cdca266-e026-4955-1088-08d59daf5572 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:17:25.6661 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1048 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Niklas Cassel [ Upstream commit 80db6f08b7af93eddc9487535e6150b220262637 ] Some hardware can operate in either "host" or "endpoint" mode, which means there can be both a host bridge driver and an endpoint driver for the same device. Those drivers share a lot of code, so sometimes they live in the same source file. The host bridge driver requires CONFIG_PCI=3Dy because it enumerates PCI devices below the bridge using the PCI core. The endpoint driver does not require CONFIG_PCI=3Dy because it runs in an embedded kernel on the other side of the device, e.g., on an adapter card. pci-dra7xx.c contains both host and endpoint drivers. If we select only the endpoint driver (CONFIG_PCI=3Dn and CONFIG_PCI_DRA7XX_EP=3Dy), the unne= eded host driver is still compiled. It references pci_irqd_intx_xlate(), which is not present when CONFIG_PCI=3Dn, which causes this error: drivers/pci/dwc/pci-dra7xx.c:229:11: error: 'pci_irqd_intx_xlate' undecla= red here (not in a function) Add a dummy pci_irqd_intx_xlate() for the CONFIG_PCI=3Dn case. [bhelgaas: changelog] Signed-off-by: Niklas Cassel Signed-off-by: Bjorn Helgaas Acked-by: Arnd Bergmann Acked-by: Lorenzo Pieralisi Signed-off-by: Sasha Levin --- include/linux/pci.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/pci.h b/include/linux/pci.h index c170c9250c8b..f69944699317 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1686,6 +1686,13 @@ static inline int pci_get_new_domain_nr(void) { retu= rn -ENOSYS; } #define dev_is_pf(d) (false) static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags) { return false; } +static inline int pci_irqd_intx_xlate(struct irq_domain *d, + struct device_node *node, + const u32 *intspec, + unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ return -EINVAL; } #endif /* CONFIG_PCI */ =20 /* Include architecture-dependent settings and functions */ --=20 2.15.1