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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2019-05-03 15:39:48 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-05-05 10:25:52 -0700 |
| commit | fdd1a8103a6df50bdeacd8bb04c3f6976cb9ae41 (patch) | |
| tree | e3cb2e36234846a202687b87f6b29b029bf8ab0d /net/atm | |
| parent | Merge tag 'wireless-drivers-next-for-davem-2019-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next (diff) | |
| download | linux-dev-fdd1a8103a6df50bdeacd8bb04c3f6976cb9ae41.tar.xz linux-dev-fdd1a8103a6df50bdeacd8bb04c3f6976cb9ae41.zip | |
net: atm: clean up a range check
The code works fine but the problem is that check for negatives is a
no-op:
if (arg < 0)
i = 0;
The "i" value isn't used. We immediately overwrite it with:
i = array_index_nospec(arg, MAX_LEC_ITF);
The array_index_nospec() macro returns zero if "arg" is out of bounds so
this works, but the dead code is confusing and it doesn't look very
intentional.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/atm')
| -rw-r--r-- | net/atm/lec.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/atm/lec.c b/net/atm/lec.c index ad4f829193f0..a0311493b01b 100644 --- a/net/atm/lec.c +++ b/net/atm/lec.c @@ -726,9 +726,7 @@ static int lecd_attach(struct atm_vcc *vcc, int arg) struct lec_priv *priv; if (arg < 0) - i = 0; - else - i = arg; + arg = 0; if (arg >= MAX_LEC_ITF) return -EINVAL; i = array_index_nospec(arg, MAX_LEC_ITF); |