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Wed, 25 Sep 2024 10:22:20 -0700 From: William Tu To: Subject: [SRU][J:linux-bluefield][PATCH v7 2/6] UBUNTU: SAUCE: vfio: Add vfio_device_get() Date: Wed, 25 Sep 2024 17:22:10 +0000 Message-ID: <20240925172214.1511114-3-witu@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240925172214.1511114-1-witu@nvidia.com> References: <20240925172214.1511114-1-witu@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PEPF00000016:EE_|SA0PR12MB4431:EE_ X-MS-Office365-Filtering-Correlation-Id: 2b76f735-27dd-490e-0c42-08dcdd86a46b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|376014|82310400026|36860700013; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge1.nvidia.com; CAT:NONE; SFS:(13230040)(1800799024)(376014)(82310400026)(36860700013); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Sep 2024 17:22:33.2040 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2b76f735-27dd-490e-0c42-08dcdd86a46b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.232]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH3PEPF00000016.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4431 Received-SPF: softfail client-ip=40.107.243.55; envelope-from=witu@nvidia.com; helo=NAM12-DM6-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 */