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net/mlx5: fix error number handling

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rte_errno should be saved only if error has occurred because rte_errno
could have garbage value.

Fixes: a6d83b6a9209 ("net/mlx5: standardize on negative errno values")
Cc: stable@dpdk.org

Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
This commit is contained in:
Yongseok Koh 2018-06-19 16:13:13 -07:00 committed by Ferruh Yigit
parent c44fbc7cc2
commit 5cffc8b28d
1 changed files with 4 additions and 2 deletions
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6
drivers/net/mlx5/mlx5_flow.c
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@ -3561,15 +3561,17 @@ wrong_flow:
/* The flow does not match. */
continue;
}
ret = rte_errno; /* Save rte_errno before cleanup. */
if (flow)
mlx5_flow_list_destroy(dev, &priv->flows, flow);
exit:
if (ret)
ret = rte_errno; /* Save rte_errno before cleanup. */
for (i = 0; i != hash_rxq_init_n; ++i) {
if (parser.queue[i].ibv_attr)
rte_free(parser.queue[i].ibv_attr);
}
rte_errno = ret; /* Restore rte_errno. */
if (ret)
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
}