{"id":2225431,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2225431/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com/","project":{"id":21,"url":"http://patchwork.ozlabs.org/api/1.2/projects/21/?format=json","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-v1-1-fb484c07d2a1@nvidia.com>","list_archive_url":null,"date":"2026-04-21T04:02:36","name":"[1/4] gpu: host1x: Fix iommu_map_sgtable() return value check","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c6ad3f3184442d1b8c366f35b78c34d367ec3056","submitter":{"id":26499,"url":"http://patchwork.ozlabs.org/api/1.2/people/26499/?format=json","name":"Mikko Perttunen","email":"mperttunen@nvidia.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-tegra/patch/20260421-iommu_map_sgtable-return-v1-1-fb484c07d2a1@nvidia.com/mbox/","series":[{"id":500722,"url":"http://patchwork.ozlabs.org/api/1.2/series/500722/?format=json","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/2225431/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225431/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-tegra@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com 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1ec29c1f-328c-467b-9220-08de9f5affae","X-MS-Exchange-CrossTenant-AuthSource":"SJ2PR12MB9161.namprd12.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"21 Apr 2026 04:03:51.9632\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 KdUX274CUIGFL1h4g4ERd2h9ZNxrf9JY/0FzqjxdHM9sgVMm13X1t90/Rpxb9yE0HJA8IKIPReeonBB4MhtHVQ==","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\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable.\n\nFixes: ad8f36e4b6b1 (\"iommu: return full error code from iommu_map_sg[_atomic]()\")\nSigned-off-by: Mikko Perttunen \n---\n drivers/gpu/host1x/job.c | 10 ++++++----\n 1 file changed, 6 insertions(+), 4 deletions(-)","diff":"diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c\nindex 3ed49e1fd933..70bda32f1ff4 100644\n--- a/drivers/gpu/host1x/job.c\n+++ b/drivers/gpu/host1x/job.c\n@@ -235,6 +235,8 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)\n \t\t}\n \n \t\tif (host->domain) {\n+\t\t\tssize_t map_err;\n+\n \t\t\tfor_each_sgtable_sg(map->sgt, sg, j)\n \t\t\t\tgather_size += sg->length;\n \n@@ -248,11 +250,11 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)\n \t\t\t\tgoto put;\n \t\t\t}\n \n-\t\t\terr = iommu_map_sgtable(host->domain, iova_dma_addr(&host->iova, alloc),\n-\t\t\t\t\t\tmap->sgt, IOMMU_READ);\n-\t\t\tif (err == 0) {\n+\t\t\tmap_err = iommu_map_sgtable(host->domain, iova_dma_addr(&host->iova, alloc),\n+\t\t\t\t\t\t map->sgt, IOMMU_READ);\n+\t\t\tif (map_err < 0) {\n \t\t\t\t__free_iova(&host->iova, alloc);\n-\t\t\t\terr = -EINVAL;\n+\t\t\t\terr = map_err;\n \t\t\t\tgoto put;\n \t\t\t}\n \n","prefixes":["1/4"]}