From: Gavi Teitz <gavi@mellanox.com>
Date: Mon, 11 Mar 2019 11:56:34 +0200
Subject: net/mlx5e: Fix error handling when refreshing TIRs
Git-commit: bc87a0036826a37b43489b029af8143bd07c6cca
Patch-mainline: v5.1-rc4
References: networking-stable-19_04_10
Previously, a false positive would be caught if the TIRs list is
empty, since the err value was initialized to -ENOMEM, and was only
updated if a TIR is refreshed. This is resolved by initializing the
err value to zero.
Fixes: b676f653896a ("net/mlx5e: Refactor refresh TIRs")
Signed-off-by: Gavi Teitz <gavi@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/net/ethernet/mellanox/mlx5/core/en_common.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
@@ -141,15 +141,17 @@ int mlx5e_refresh_tirs(struct mlx5e_priv
{
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_tir *tir;
- int err = -ENOMEM;
+ int err = 0;
u32 tirn = 0;
int inlen;
void *in;
inlen = MLX5_ST_SZ_BYTES(modify_tir_in);
in = kvzalloc(inlen, GFP_KERNEL);
- if (!in)
+ if (!in) {
+ err = -ENOMEM;
goto out;
+ }
if (enable_uc_lb)
MLX5_SET(modify_tir_in, in, ctx.self_lb_block,