lib/mpi: added comment on divide by 0 case
Comment explains that existing clients do not call this function with dsize == 0, which means that 1/0 should not happen. Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com> Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
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@ -217,6 +217,10 @@ mpihelp_divrem(mpi_ptr_t qp, mpi_size_t qextra_limbs,
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case 0:
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/* We are asked to divide by zero, so go ahead and do it! (To make
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the compiler not remove this statement, return the value.) */
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/*
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* existing clients of this function have been modified
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* not to call it with dsize == 0, so this should not happen
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*/
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return 1 / dsize;
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case 1:
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