{"id":2225515,"url":"http://patchwork.ozlabs.org/api/patches/2225515/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260421-nova-unload-v2-1-2fe54963af8b@nvidia.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/projects/28/?format=json","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":"<20260421-nova-unload-v2-1-2fe54963af8b@nvidia.com>","list_archive_url":null,"date":"2026-04-21T06:16:11","name":"[v2,1/5] rust: add warn_on_err macro","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"3818c5546f924994337608dae2ac596ca4894ea8","submitter":{"id":13521,"url":"http://patchwork.ozlabs.org/api/people/13521/?format=json","name":"Alexandre Courbot","email":"acourbot@nvidia.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260421-nova-unload-v2-1-2fe54963af8b@nvidia.com/mbox/","series":[{"id":500739,"url":"http://patchwork.ozlabs.org/api/series/500739/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=500739","date":"2026-04-21T06:16:10","name":"gpu: nova-core: run unload sequence upon unbinding","version":2,"mbox":"http://patchwork.ozlabs.org/series/500739/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225515/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225515/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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 (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n 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header.d=nvidia.com; arc=none"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com;\n s=selector2;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=zgShyfgo098bQ9tJx/o2dExcu4BIrahVGCdHSGqskEw=;\n b=SuSTY2SalNLoelAoKfTtkIAz9KxMQVMeQrAl3LqMJziuqX5J9W2ddOucNM+gKH9THgvK/JbQoBNKzB+KtOb5K2OrbXtvyDITJpFbjeQIZDeac7Orj5CDmDQYAGVWOukFtT5eRr8fHOwPL6/cJ/wKmBl+cy5VCqatXWRQWkrR3WnpVafZXfOaiB1tDdTjmTaBMF32sg7j+8ZebSYJyHEzMYydCvaixZoz9h34qLdw7x1qjQFVNe8PLSRrwDisuyKTo96kgYKpjFbu5ZPzToULCysWLK4L9Lw5d1N3P3kZbQ88Ylfs7GMFZUlpf9hegxDhgF/zLRCNzR9juuwyTX5HNw==","From":"Alexandre Courbot ","Date":"Tue, 21 Apr 2026 15:16:11 +0900","Subject":"[PATCH v2 1/5] rust: add warn_on_err macro","Content-Type":"text/plain; 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0707a325-d58b-43d6-0828-08de9f6d8154","X-MS-Exchange-CrossTenant-AuthSource":"CH2PR12MB3990.namprd12.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"21 Apr 2026 06:16:20.5586\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 V/ovRUOfImGV6EeFB5/eGnwdYvD5ZJJpKnNKUaRvITy13IjK5QZg1uyTUgMobGmmhfITkc4lacbVu5IzZ0u2kg==","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"CYYPR12MB8749"},"content":"While we already have the `warn_on` macro, a common usage pattern in\nRust is to check whether a `Result` is an error. Add a helper macro that\nallows this.\n\nSigned-off-by: Alexandre Courbot \n---\n rust/kernel/bug.rs | 10 ++++++++++\n 1 file changed, 10 insertions(+)","diff":"diff --git a/rust/kernel/bug.rs b/rust/kernel/bug.rs\nindex ed943960f851..2fefc0aeef81 100644\n--- a/rust/kernel/bug.rs\n+++ b/rust/kernel/bug.rs\n@@ -130,3 +130,13 @@ macro_rules! warn_on {\n cond\n }};\n }\n+\n+/// Report a warning if `res` is an error and return it unmodified.\n+#[macro_export]\n+macro_rules! warn_on_err {\n+ ($res:expr) => {{\n+ let res = $res;\n+ let _ = $crate::warn_on!(res.is_err());\n+ res\n+ }};\n+}\n","prefixes":["v2","1/5"]}