android_kernel_motorola_sm6225/drivers/infiniband/hw
Roland Dreier c263ff65d5 IB/mthca: Avoid integer overflow when allocating huge ICM table
In mthca_alloc_icm_table(), the number of entries to allocate for the
table->icm array is computed by calculating obj_size * nobj and then
dividing by MTHCA_TABLE_CHUNK_SIZE.  If nobj is really large, then
obj_size * nobj may overflow and the division may get the wrong value
(even a negative value).  Fix this by calculating the number of
objects per chunk and then dividing nobj by this value instead.

This patch allows crazy configurations such as loading ib_mthca with
the module parameter num_mtt=33554432 to work properly.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16 21:01:13 -07:00
..
amso1100 IB: Replace remaining __FUNCTION__ occurrences with __func__ 2008-04-16 21:01:10 -07:00
cxgb3 IB: Replace remaining __FUNCTION__ occurrences with __func__ 2008-04-16 21:01:10 -07:00
ehca IB/ehca: Remove tgid checking 2008-04-16 21:01:13 -07:00
ipath IB/ipath: Enable 4KB MTU 2008-04-16 21:01:12 -07:00
mlx4 IB/mlx4: Add IPoIB checksum offload support 2008-04-16 21:01:10 -07:00
mthca IB/mthca: Avoid integer overflow when allocating huge ICM table 2008-04-16 21:01:13 -07:00
nes IB: Replace remaining __FUNCTION__ occurrences with __func__ 2008-04-16 21:01:10 -07:00