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>
diff --git a/net/atm/lec.c b/net/atm/lec.c
index ad4f829..a031149 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);