From 3a9b3d4536e0c25bd3906a28c1f584177e49dd0f Mon Sep 17 00:00:00 2001
From: YueHaibing <yuehaibing@huawei.com>
Date: Mon, 22 Feb 2021 20:23:43 +0800
Subject: [PATCH 1/1] IB/mlx5: Add missing error code
Git-commit: 3a9b3d4536e0c25bd3906a28c1f584177e49dd0f
Patch-mainline: v5.12
References: git-fixes
Set err to -ENOMEM if kzalloc fails instead of 0.
Fixes: 759738537142 ("IB/mlx5: Enable subscription for device events over DEVX")
Link: https://lore.kernel.org/r/20210222122343.19720-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>
---
drivers/infiniband/hw/mlx5/devx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index ebc2a4355fa5..de3c2fc6f361 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -2073,8 +2073,10 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)(
num_alloc_xa_entries++;
event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL);
- if (!event_sub)
+ if (!event_sub) {
+ err = -ENOMEM;
goto err;
+ }
list_add_tail(&event_sub->event_list, &sub_list);
uverbs_uobject_get(&ev_file->uobj);
--
2.31.1.5.g533053588dc3