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Message-ID: <4F41F88C.3070607@mellanox.co.il> Date: Mon, 20 Feb 2012 09:38:52 +0200 From: Yevgeny Petrilin <yevgenyp@...lanox.co.il> To: <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <yevgenyp@...lanox.co.il>, <jackm@....mellanox.co.il> Subject: [PATCH net] mlx4_core: Do not map BF area if capability is 0 From: Jack Morgenstein <jackm@....mellanox.co.il> BF can be disabled in some cases, the capability field, bf_reg_size is set to zero in this case. Don't map the BF area in this case, it would cause failures. In addition, leaving the BF area unmapped also alerts the ETH driver to not use BF. Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il> --- drivers/net/ethernet/mellanox/mlx4/main.c | 3 +++ 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 678558b..9c5fbad 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) - -- 1.5.4.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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