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Mon, 23 Sep 2024 15:35:28 -0700 From: William Tu To: Subject: [SRU][J:linux-bluefield][PATCH v6 2/6] UBUNTU: SAUCE: vfio: Add vfio_device_get() Date: Mon, 23 Sep 2024 22:35:18 +0000 Message-ID: <20240923223522.1203691-3-witu@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240923223522.1203691-1-witu@nvidia.com> References: <20240923223522.1203691-1-witu@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003F61:EE_|PH7PR12MB5653:EE_ X-MS-Office365-Filtering-Correlation-Id: 6342de4c-e6ef-44b0-02d4-08dcdc200d40 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|1800799024|36860700013|82310400026; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge2.nvidia.com; CAT:NONE; SFS:(13230040)(376014)(1800799024)(36860700013)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2024 22:35:39.7880 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6342de4c-e6ef-44b0-02d4-08dcdc200d40 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.233]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00003F61.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5653 Received-SPF: softfail client-ip=40.107.92.70; envelope-from=witu@nvidia.com; helo=NAM10-BN7-obe.outbound.protection.outlook.com X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vlad@nvidia.com, bodong@nvidia.com, sergeygo@nvidia.com, jgg@nvidia.com, zwaksman@nvidia.com Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Jason Gunthorpe BugLink: https://bugs.launchpad.net/bugs/2077887 To increment a reference the caller already holds. Export vfio_device_put() to pair with it. Signed-off-by: Jason Gunthorpe Signed-off-by: William Tu --- include/linux/vfio.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/vfio.h b/include/linux/vfio.h index b7275ed44e4c..071cea3871c9 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -82,6 +82,11 @@ void vfio_unregister_group_dev(struct vfio_device *device); extern struct vfio_device *vfio_device_get_from_dev(struct device *dev); extern void vfio_device_put(struct vfio_device *device); +static inline void vfio_device_get(struct vfio_device *device) +{ + refcount_inc(&device->refcount); +} + int vfio_assign_device_set(struct vfio_device *device, void *set_id); /* events for the backend driver notify callback */