[dpdk-dev] [PATCH] net/mlx5: fix xstats functions unlock missing

[Matan Azrad <matan@mellanox.com>]

The corrupted code didn't unlock the spinlock in xstats
get and reset functions error flow.

Hence, if these errors happaned, the device spinlock was
left locked and many mlx5 device functionalities were blocked.

The fix unlocks the spinlock in the missed places.

Fixes: e62bc9e70608 ("net/mlx5: fix extended statistics")

Signed-off-by: Matan Azrad <matan@mellanox.com>
Cc: stable@dpdk.org
---
 drivers/net/mlx5/mlx5_stats.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c
index 703f48c..33997af 100644
--- a/drivers/net/mlx5/mlx5_stats.c
+++ b/drivers/net/mlx5/mlx5_stats.c
@@ -442,8 +442,10 @@ mlx5_xstats_get(struct rte_eth_dev *dev,
 
 		priv_lock(priv);
 		stats_n = priv_ethtool_get_stats_n(priv);
-		if (stats_n < 0)
+		if (stats_n < 0) {
+			priv_unlock(priv);
 			return -1;
+		}
 		if (xstats_ctrl->stats_n != stats_n)
 			priv_xstats_init(priv);
 		ret = priv_xstats_get(priv, stats);
@@ -468,10 +470,11 @@ mlx5_xstats_reset(struct rte_eth_dev *dev)
 	priv_lock(priv);
 	stats_n = priv_ethtool_get_stats_n(priv);
 	if (stats_n < 0)
-		return;
+		goto unlock;
 	if (xstats_ctrl->stats_n != stats_n)
 		priv_xstats_init(priv);
 	priv_xstats_reset(priv);
+unlock:
 	priv_unlock(priv);
 }
 
-- 
2.7.4