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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>
hifive-unleashed-5.1
Dmitry Kasatkin 2012-01-26 19:13:20 +02:00 committed by James Morris
parent 4877e05619
commit a6d68ecc56
1 changed files with 4 additions and 0 deletions
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4
lib/mpi/mpih-div.c
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@ -217,6 +217,10 @@ mpihelp_divrem(mpi_ptr_t qp, mpi_size_t qextra_limbs,
case 0:
/* We are asked to divide by zero, so go ahead and do it! (To make
the compiler not remove this statement, return the value.) */
/*
* existing clients of this function have been modified
* not to call it with dsize == 0, so this should not happen
*/
return 1 / dsize;
case 1: