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GET /api/1.2/patches/2225433/?format=api
{ "id": 2225433, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2225433/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-3-fb484c07d2a1@nvidia.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/1.2/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421-iommu_map_sgtable-return-v1-3-fb484c07d2a1@nvidia.com>", "list_archive_url": null, "date": "2026-04-21T04:02:38", "name": "[3/4] drm/msm: Fix iommu_map_sgtable() return value check and avoid WARN", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "fc2430ec191a5603cc38d0f55cfe451a94819a8c", "submitter": { "id": 26499, "url": "http://patchwork.ozlabs.org/api/1.2/people/26499/?format=api", "name": "Mikko Perttunen", "email": "mperttunen@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-3-fb484c07d2a1@nvidia.com/mbox/", "series": [ { "id": 500722, "url": "http://patchwork.ozlabs.org/api/1.2/series/500722/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/list/?series=500722", "date": "2026-04-21T04:02:35", "name": "Fix checking of iommu_map_sgtable return value", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500722/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225433/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225433/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-tegra+bounces-13826-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", 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"X-MS-Exchange-AntiSpam-MessageData-1": "DK9LBH/rD6HoRg==", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 295e1fda-fb65-435d-26b5-08de9f5b03f5", "X-MS-Exchange-CrossTenant-AuthSource": "SJ2PR12MB9161.namprd12.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "21 Apr 2026 04:03:59.1759\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 04ZnpuNriuolhL+xGN/8kjJJXAhxc2pm/LHWtbDQ67lttgerxAFXsKu0y8ObPxFygT8eByKzXDHUGeuEk0n9MA==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PH7PR12MB7985" }, "content": "Commit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\nStore the return value in the appropriate type and in case of error,\nreturn it rather than WARNing.\n\nFixes: ad8f36e4b6b1 (\"iommu: return full error code from iommu_map_sg[_atomic]()\")\nSigned-off-by: Mikko Perttunen <mperttunen@nvidia.com>\n---\n drivers/gpu/drm/msm/msm_iommu.c | 5 +++--\n 1 file changed, 3 insertions(+), 2 deletions(-)", "diff": "diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c\nindex 7d449e5202c5..058c71c82cf5 100644\n--- a/drivers/gpu/drm/msm/msm_iommu.c\n+++ b/drivers/gpu/drm/msm/msm_iommu.c\n@@ -677,7 +677,7 @@ static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,\n \t\t\t int prot)\n {\n \tstruct msm_iommu *iommu = to_msm_iommu(mmu);\n-\tsize_t ret;\n+\tssize_t ret;\n \n \tWARN_ON(off != 0);\n \n@@ -686,7 +686,8 @@ static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,\n \t\tiova |= GENMASK_ULL(63, 49);\n \n \tret = iommu_map_sgtable(iommu->domain, iova, sgt, prot);\n-\tWARN_ON(!ret);\n+\tif (ret < 0)\n+\t\treturn ret;\n \n \treturn (ret == len) ? 0 : -EINVAL;\n }\n", "prefixes": [ "3/4" ] }