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authorYevgeny Petrilin <yevgenyp@mellanox.co.il>2011-04-07 03:25:45 +0400
committerDavid S. Miller <davem@davemloft.net>2011-04-08 07:36:13 +0400
commit60b1809f7e2ea2620aa548e1c866066756bdd1d2 (patch)
tree79ab74bbcd1bdb2232bb750a3236baee298d41bb /drivers/net/mlx4/en_rx.c
parentab6dc30da55d262c54ae12e47e4a2e4372e39fbf (diff)
downloadlinux-60b1809f7e2ea2620aa548e1c866066756bdd1d2.tar.xz
mlx4_en: Restoring RX buffer pointer in case of failure
If not done, second attempt to open the RX ring would cause memory corruption. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/mlx4/en_rx.c')
-rw-r--r--drivers/net/mlx4/en_rx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index 05998ee297c9..98d4ce04f86f 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -345,6 +345,8 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
err = mlx4_en_init_allocator(priv, ring);
if (err) {
en_err(priv, "Failed initializing ring allocator\n");
+ if (ring->stride <= TXBB_SIZE)
+ ring->buf -= TXBB_SIZE;
ring_ind--;
goto err_allocator;
}
@@ -369,6 +371,8 @@ err_buffers:
ring_ind = priv->rx_ring_num - 1;
err_allocator:
while (ring_ind >= 0) {
+ if (priv->rx_ring[ring_ind].stride <= TXBB_SIZE)
+ priv->rx_ring[ring_ind].buf -= TXBB_SIZE;
mlx4_en_destroy_allocator(priv, &priv->rx_ring[ring_ind]);
ring_ind--;
}