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authorJack Morgenstein <jackm@dev.mellanox.co.il>2013-11-03 10:03:22 +0200
committerDavid S. Miller <davem@davemloft.net>2013-11-04 16:19:07 -0500
commita30f1bc5c0254cee94bc22304e57fe030fcf68f5 (patch)
tree2784d3165280560d4632ca7c196db8400249429e /drivers/net/ethernet/mellanox/mlx4
parent2c957ff27dbbabec4ec406420fab9677d59f7161 (diff)
downloadlinux-a30f1bc5c0254cee94bc22304e57fe030fcf68f5.tar.gz
net/mlx4_core: Fix checking order in MR table init
In procedure mlx4_init_mr_table(), slaves should do no processing,
but should return success. This initialization is hypervisor-only.

However, the check for num_mpts being a power-of-2 was performed
before the check to return immediately if the driver is for a slave.
This resulted in spurious failures.

The order of performing the checks is reversed, so that if the
driver is for a slave, no processing is done and success is returned.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/mr.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index f91719a08cba..63391a1a7f8c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -755,14 +755,14 @@ int mlx4_init_mr_table(struct mlx4_dev *dev)
 	struct mlx4_mr_table *mr_table = &priv->mr_table;
 	int err;
 
-	if (!is_power_of_2(dev->caps.num_mpts))
-		return -EINVAL;
-
 	/* Nothing to do for slaves - all MR handling is forwarded
 	* to the master */
 	if (mlx4_is_slave(dev))
 		return 0;
 
+	if (!is_power_of_2(dev->caps.num_mpts))
+		return -EINVAL;
+
 	err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts,
 			       ~0, dev->caps.reserved_mrws, 0);
 	if (err)