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GET /api/patches/2195181/?format=api
{ "id": 2195181, "url": "http://patchwork.ozlabs.org/api/patches/2195181/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260210142058.82701-1-kaihengf@nvidia.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210142058.82701-1-kaihengf@nvidia.com>", "list_archive_url": null, "date": "2026-02-10T14:20:57", "name": "PCI: Validate window resource type in pbus_select_window_for_type()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d396239fdec141eaf628f03bca67314524934bba", "submitter": { "id": 89451, "url": "http://patchwork.ozlabs.org/api/people/89451/?format=api", "name": "Kai-Heng Feng", "email": "kaihengf@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260210142058.82701-1-kaihengf@nvidia.com/mbox/", "series": [ { "id": 491684, "url": "http://patchwork.ozlabs.org/api/series/491684/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=491684", "date": "2026-02-10T14:20:57", "name": "PCI: Validate window resource type in pbus_select_window_for_type()", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491684/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195181/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195181/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-47091-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": [ 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"X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n f18efe14-322c-4442-9caa-08de68afa0b9", "X-MS-Exchange-CrossTenant-AuthSource": "SJ2PR12MB7917.namprd12.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "10 Feb 2026 14:21:06.1559\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n 6qscAOxfKKBw52E0oMP+7FFrnNQYg41Kkq3DKWVaFpdDFQqLApkdluuusisIbD1evGq9cRxbijJnFndQvsYUXQ==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BL3PR12MB6473" }, "content": "Afer commit ebe091ad81e1 (\"PCI: Use pbus_select_window_for_type() during\nIO window sizing\") and commit ae88d0b9c57f (\"PCI: Use\npbus_select_window_for_type() during mem window sizing\"), many bridge\nwindow can't get resource assigned:\npci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space\npci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign\npci 0006:05:04.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space\npci 0006:05:04.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign\npci 0006:05:08.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space\npci 0006:05:08.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign\npci 0006:05:0c.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space\npci 0006:05:0c.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign\n\nThose commits replace find_bus_resource_of_type() with\npbus_select_window_for_type(), and the latter lacks resource type\nvalidation.\n\nThis commit adds the resource type validation back to\npbus_select_window_for_type() to match the original behavior.\n\nFixes: 74afce3dfcba (\"PCI: Add bridge window selection functions\")\nLink: https://bugzilla.kernel.org/show_bug.cgi?id=221072\nSigned-off-by: Kai-Heng Feng <kaihengf@nvidia.com>\n---\n drivers/pci/setup-bus.c | 13 ++++++++++---\n 1 file changed, 10 insertions(+), 3 deletions(-)", "diff": "diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c\nindex e680f75a5b5e..1b5185697011 100644\n--- a/drivers/pci/setup-bus.c\n+++ b/drivers/pci/setup-bus.c\n@@ -224,14 +224,21 @@ static struct resource *pbus_select_window_for_type(struct pci_bus *bus,\n \n \tswitch (iores_type) {\n \tcase IORESOURCE_IO:\n-\t\treturn pci_bus_resource_n(bus, PCI_BUS_BRIDGE_IO_WINDOW);\n+\t\twin = pci_bus_resource_n(bus, PCI_BUS_BRIDGE_IO_WINDOW);\n+\t\tif (win && (win->flags & IORESOURCE_IO))\n+\t\t\treturn win;\n+\t\treturn NULL;\n \n \tcase IORESOURCE_MEM:\n \t\tmmio = pci_bus_resource_n(bus, PCI_BUS_BRIDGE_MEM_WINDOW);\n \t\tmmio_pref = pci_bus_resource_n(bus, PCI_BUS_BRIDGE_PREF_MEM_WINDOW);\n \n-\t\tif (!(type & IORESOURCE_PREFETCH) ||\n-\t\t !(mmio_pref->flags & IORESOURCE_MEM))\n+\t\tif (mmio && !(mmio->flags & IORESOURCE_MEM))\n+\t\t\tmmio = NULL;\n+\t\tif (mmio_pref && !(mmio_pref->flags & IORESOURCE_MEM))\n+\t\t\tmmio_pref = NULL;\n+\n+\t\tif (!(type & IORESOURCE_PREFETCH) || !mmio_pref)\n \t\t\treturn mmio;\n \n \t\tif ((type & IORESOURCE_MEM_64) ||\n", "prefixes": [] }