redonkable/alistair23-linux
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mlx4_core: Reserve the correct number of MTT segments

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Taking ilog2(dev->caps.reserved_mtts) to find out the order to pass to
the MTT buddy allocator will do the wrong thing if reserved_mtts is ever
not a power of 2.  Be safe and use fls(dev->caps.reserved_mtts - 1).

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2007-10-09 19:59:16 -07:00
parent 5b0bf5e25e
commit cf78237d7b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/mlx4/mr.c
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@ -444,7 +444,7 @@ int __devinit mlx4_init_mr_table(struct mlx4_dev *dev)
goto err_buddy;
if (dev->caps.reserved_mtts) {
if (mlx4_alloc_mtt_range(dev, ilog2(dev->caps.reserved_mtts)) == -1) {
if (mlx4_alloc_mtt_range(dev, fls(dev->caps.reserved_mtts - 1)) == -1) {
mlx4_warn(dev, "MTT table of order %d is too small.\n",
mr_table->mtt_buddy.max_order);
err = -ENOMEM;