4.9-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 061870800efb4e3d1ad4082a2569363629bdfcfc ]
Completion on timeout should not free the driver command entry structure
as it will need to access it again once real completion event from FW
will occur.
Fixes: 73dd3a4839c1 ('net/mlx5: Avoid using pending command interface slots')
Signed-off-by: Moshe Shemesh <mo...@mellanox.com>
Cc: kernel-t...@fb.com
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index 9680c8805178..1d5263c46eee 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -965,7 +965,7 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev,
struct mlx5_cmd_msg *in,
err = wait_func(dev, ent);
if (err == -ETIMEDOUT)
- goto out_free;
+ goto out;
ds = ent->ts2 - ent->ts1;
op = MLX5_GET(mbox_in, in->first.data, opcode);
@@ -1428,6 +1428,7 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64
vec, bool forced)
mlx5_core_err(dev, "Command completion
arrived after timeout (entry idx = %d).\n",
ent->idx);
free_ent(cmd, ent->idx);
+ free_cmd(ent);
}
continue;
}
@@ -1486,7 +1487,8 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64
vec, bool forced)
free_msg(dev, ent->in);
err = err ? err : ent->status;
- free_cmd(ent);
+ if (!forced)
+ free_cmd(ent);
callback(err, context);
} else {
complete(&ent->done);
--
2.17.1
