From: Eli Cohen <eli@mellanox.com>
Date: Wed, 11 Sep 2013 13:35:27 +0000 (+0300)
Subject: IB/mlx5: Avoid async events on invalid port number
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a0c84c326f720c3e3ebb9c49cbce916c05a57297;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

IB/mlx5: Avoid async events on invalid port number

On a single ported Connect-IB, its possible for the firmware to issue
events on the non-existing 2nd port.  Make sure to ignore events
generated for such ports.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 3f831de9a4d8..e59761ed7d00 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1006,6 +1006,11 @@ static void mlx5_ib_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
 	ibev.device	      = &ibdev->ib_dev;
 	ibev.element.port_num = port;
 
+	if (port < 1 || port > ibdev->num_ports) {
+		mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
+		return;
+	}
+
 	if (ibdev->ib_active)
 		ib_dispatch_event(&ibev);
 }