1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 678558b502fc..9c5fbad513f8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -986,6 +986,9 @@ static int map_bf_area(struct mlx4_dev *dev)
         resource_size_t bf_len;
         int err = 0;
 
+        if (!dev->caps.bf_reg_size)
+                return -ENXIO;
+
         bf_start = pci_resource_start(dev->pdev, 2) +
                         (dev->caps.num_uars << PAGE_SHIFT);
         bf_len = pci_resource_len(dev->pdev, 2) -