net/mlx5: Report a CQ error event only when a handler was set

Report a CQ error event only when a handler was set.

This enables mlx5_ib to not set a handler upon CQ creation and use some
other mechanism to get this event as of other events by the
mlx5_eq_notifier_register API.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index c634a78d5cddc0ccd29a8aa2759edb6b13117c19..678454535460143662be66e8c614df23be27ad0e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -503,7 +503,8 @@ static int cq_err_event_notifier(struct notifier_block *nb,
                return NOTIFY_OK;
        }
 
-       cq->event(cq, type);
+       if (cq->event)
+               cq->event(cq, type);
 
        mlx5_cq_put(cq);