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GET /api/1.0/patches/2198040/?format=api
{ "id": 2198040, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2198040/?format=api", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.0/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20260219064511.695086-2-a-garg7@ti.com>", "date": "2026-02-19T06:45:10", "name": "[v2,1/2] PCI: dwc: ep: Fix MSI-X configuration to write to correct physical function", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a93d3e7a643638e9e9c3fe15cb61f71daf903bb1", "submitter": { "id": 92467, "url": "http://patchwork.ozlabs.org/api/1.0/people/92467/?format=api", "name": "Aksh Garg", "email": "a-garg7@ti.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260219064511.695086-2-a-garg7@ti.com/mbox/", "series": [ { "id": 492644, "url": "http://patchwork.ozlabs.org/api/1.0/series/492644/?format=api", "date": "2026-02-19T06:45:10", "name": "PCI: dwc: ep: Multi-function endpoint configuration fixes", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/492644/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2198040/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-pci+bounces-47607-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256\n header.s=selector1 header.b=NVCgBTMM;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.232.135.74; helo=sto.lore.kernel.org;\n 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<jingoohan1@gmail.com>, <mani@kernel.org>,\n\t<lpieralisi@kernel.org>, <kwilczynski@kernel.org>, <robh@kernel.org>,\n\t<bhelgaas@google.com>, <yoshihiro.shimoda.uh@renesas.com>,\n\t<fancer.lancer@gmail.com>, <Zhiqiang.Hou@nxp.com>,\n\t<gustavo.pimentel@synopsys.com>, <cassel@kernel.org>", "CC": "<linux-kernel@vger.kernel.org>, <s-vadapalli@ti.com>,\n\t<danishanwar@ti.com>, Aksh Garg <a-garg7@ti.com>", "Subject": "[PATCH v2 1/2] PCI: dwc: ep: Fix MSI-X configuration to write to\n correct physical function", "Date": "Thu, 19 Feb 2026 12:15:10 +0530", "Message-ID": "<20260219064511.695086-2-a-garg7@ti.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260219064511.695086-1-a-garg7@ti.com>", "References": "<20260219064511.695086-1-a-garg7@ti.com>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": 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"X-Forefront-Antispam-Report": "\n\tCIP:198.47.23.194;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:lewvzet200.ext.ti.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(376014)(7416014)(82310400026)(921020);DIR:OUT;SFP:1101;", "X-MS-Exchange-AntiSpam-MessageData-ChunkCount": "1", "X-MS-Exchange-AntiSpam-MessageData-0": "\n\tfejENUhHGaSWs7EGRLW/7/5Z5LC8zytYzbeWgv4GiUGExunrub126A/L0z7GsdzKWrK8wBv0M75LJqj9lzv41tHeM2wdH267klZQW2vAOsRXL6OUqSKURAx+DKPUBgcV3o+WFFTgshgtBoHDLgwwYER37jsboL7hZ9XIsLyL3nAAfjxpSI6BN5kWz51WIrFSKumyAAYNWDEGIABxWm8iauYu3oUcu5AVtHVw6aomi8yHDZs6DgOWslo2CErCAqXzNBNzni6l0nMp4H5f4TRbrHyz+2wcOqoMFJrZT+5aFbiGXFEImQUIHThAxCXFmDeJLd8eqdubn+dBJ6mrvhYeX+zb9zGauaqqIoL2zrSJ0NVJigxB/yx2nxPhpQv5ncjj7IsCi+VD1cMgtKRWjxiPnPFWfPirfwhsA6HoHWGazARq04eZZBONTzKpeMB4/Ze9", "X-OriginatorOrg": "ti.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "19 Feb 2026 06:45:27.8878\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n dfbcf269-647f-4c49-0340-08de6f8277cf", "X-MS-Exchange-CrossTenant-Id": "e5b49634-450b-4709-8abb-1e2b19b982b7", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.194];Helo=[lewvzet200.ext.ti.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n\tCY4PEPF0000EE3F.namprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "IA1PR10MB7116" }, "content": "The MSI-X configuration code reads from the correct physical function's\nregister space using dw_pcie_ep_readw_dbi(), but writes back only to\nPF0 using the old dw_pcie_writew_dbi() helper. This causes incorrect\nMSI-X configuration for other PFs.\n\nFix this by using dw_pcie_ep_writew_dbi() to write to the correct PF's\nregister space, matching the read operation.\n\nFixes: 70fa02ca1446 (\"PCI: dwc: Add dw_pcie_ep_{read,write}_dbi[2] helpers\")\nReviewed-by: Niklas Cassel <cassel@kernel.org>\nSigned-off-by: Aksh Garg <a-garg7@ti.com>\n---\n\nChanges from v1 to v2:\n- None\n\nv1: https://lore.kernel.org/all/20260202072758.101845-2-a-garg7@ti.com/\n\n drivers/pci/controller/dwc/pcie-designware-ep.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c\nindex 7e7844ff0f7e..771241e1a2c9 100644\n--- a/drivers/pci/controller/dwc/pcie-designware-ep.c\n+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c\n@@ -745,7 +745,7 @@ static int dw_pcie_ep_set_msix(struct pci_epc *epc, u8 func_no, u8 vfunc_no,\n \tval = dw_pcie_ep_readw_dbi(ep, func_no, reg);\n \tval &= ~PCI_MSIX_FLAGS_QSIZE;\n \tval |= nr_irqs - 1; /* encoded as N-1 */\n-\tdw_pcie_writew_dbi(pci, reg, val);\n+\tdw_pcie_ep_writew_dbi(ep, func_no, reg, val);\n \n \treg = ep_func->msix_cap + PCI_MSIX_TABLE;\n \tval = offset | bir;\n", "prefixes": [ "v2", "1/2" ] }