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authorEugenia Emantayev <eugenia@mellanox.com>2016-10-27 16:27:16 +0300
committerDavid S. Miller <davem@davemloft.net>2016-10-29 16:23:48 -0400
commit4850cf4581578216468b7b3c3d06cc5abb0a697d (patch)
tree2edd012551dd4f35a4700357471a7bc1cbfcaef8
parent72da2e911f79d4c7132d7431a97d46659ee862be (diff)
net/mlx4_en: Resolve dividing by zero in 32-bit system
When doing roundup_pow_of_two for large enough number with bit 31, an overflow will occur and a value equal to 1 will be returned. In this case 1 will be subtracted from the return value and division by zero will be reached. Fixes: 31c128b66e5b ("net/mlx4_en: Choose time-stamping shift value according to HW frequency") Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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