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| author | Dmitry Kasatkin <dmitry.kasatkin@intel.com> | 2012-01-26 19:13:20 +0200 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2012-02-02 00:23:39 +1100 |
| commit | a6d68ecc56ed182644c81ef6917ce1f5404db7dd (patch) | |
| tree | c2141a497e88fa2d596833f2a27c87f5b995cbc6 /lib/mpi/mpih-div.c | |
| parent | 4877e056192245b387aae004ab38f7f3899dd57c (diff) | |
| download | lwn-a6d68ecc56ed182644c81ef6917ce1f5404db7dd.tar.gz lwn-a6d68ecc56ed182644c81ef6917ce1f5404db7dd.zip | |
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>
Diffstat (limited to 'lib/mpi/mpih-div.c')
| -rw-r--r-- | lib/mpi/mpih-div.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/mpi/mpih-div.c b/lib/mpi/mpih-div.c index 87ede162dfab..cde1aaec18da 100644 --- a/lib/mpi/mpih-div.c +++ b/lib/mpi/mpih-div.c @@ -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: |