From 13bf58b7604d9adfebb8b7c95e6cfb31ec17c699 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Wed, 30 May 2012 09:14:52 +0000 Subject: [PATCH] net/mlx4_en: Fix improper use of "port" parameter in mlx4_en_event Port is used as an array index before we know if that is proper. For example, in the catas event case, port is zero; however, the port index should lie in the range (1..2). Fix this by using 'port' only in the events where it is of interest. Test for port out of range in the default (unhandled event) case, and do not output a message if it is not an ethernet port. Signed-off-by: Jack Morgenstein Reviewed-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c index 988b2424e1c..69ba5727048 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c @@ -136,13 +136,12 @@ static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr, struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr; struct mlx4_en_priv *priv; - if (!mdev->pndev[port]) - return; - - priv = netdev_priv(mdev->pndev[port]); switch (event) { case MLX4_DEV_EVENT_PORT_UP: case MLX4_DEV_EVENT_PORT_DOWN: + if (!mdev->pndev[port]) + return; + priv = netdev_priv(mdev->pndev[port]); /* To prevent races, we poll the link state in a separate task rather than changing it here */ priv->link_state = event; @@ -154,7 +153,10 @@ static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr, break; default: - mlx4_warn(mdev, "Unhandled event: %d\n", event); + if (port < 1 || port > dev->caps.num_ports || + !mdev->pndev[port]) + return; + mlx4_warn(mdev, "Unhandled event %d for port %d\n", event, port); } } -- 2.41.0