Subject: [PATCH mlx5-next 05/12] net/mlx5: Report a CQ error event only when a handler was set

From: Leon Romanovsky <[email-masked]>
Date: Thu, 13 Jun 2019 09:26:33 +0300

From: Yishai Hadas <[email-masked]>

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 <[email-masked]>
Reviewed-by: Saeed Mahameed <[email-masked]>
Signed-off-by: Leon Romanovsky <[email-masked]>
---
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 5971c1870e0d..c2a679657c34 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -494,7 +494,8 @@ 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);
 
-- 
2.20.1