netdev - [PATCH net-next] net/mlx5: SF, silence an uninitialized variable warning

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Date:   Sat, 27 Nov 2021 17:19:53 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Saeed Mahameed <saeedm@...dia.com>
Cc:     Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Parav Pandit <parav@...dia.com>, Vu Pham <vuhuong@...dia.com>,
        Shay Drory <shayd@...dia.com>,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Wan Jiabing <wanjiabing@...o.com>, Eli Cohen <elic@...dia.com>,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH net-next] net/mlx5: SF, silence an uninitialized variable
 warning

This code sometimes calls mlx5_sf_hw_table_hwc_init() when "ext_base_id"
is uninitialized.  It's not used on that path, but it generates a static
checker warning to pass uninitialized variables to another function.
It may also generate runtime UBSan  warnings depending on if the
mlx5_sf_hw_table_hwc_init() function is inlined or not.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c
index 252d6017387d..17aa348989cb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c
@@ -247,7 +247,7 @@ int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
 {
 	struct mlx5_sf_hw_table *table;
 	u16 max_ext_fn = 0;
-	u16 ext_base_id;
+	u16 ext_base_id = 0;
 	u16 max_fn = 0;
 	u16 base_id;
 	int err;
-- 
2.20.1