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Subject[PATCH] net: Remove duplicated midx check against 0
Date
Check midx against 0 is always equal to check midx against sk_bound_dev_if
when sk_bound_dev_if is known not equal to 0 in these case.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
net/ipv4/ip_sockglue.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index d2c223554ff7..ec6036713e2c 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1124,8 +1124,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, int optname,
dev_put(dev);

err = -EINVAL;
- if (sk->sk_bound_dev_if &&
- (!midx || midx != sk->sk_bound_dev_if))
+ if (sk->sk_bound_dev_if && midx != sk->sk_bound_dev_if)
break;

inet->uc_index = ifindex;
@@ -1189,7 +1188,7 @@ static int do_ip_setsockopt(struct sock *sk, int level, int optname,
err = -EINVAL;
if (sk->sk_bound_dev_if &&
mreq.imr_ifindex != sk->sk_bound_dev_if &&
- (!midx || midx != sk->sk_bound_dev_if))
+ midx != sk->sk_bound_dev_if)
break;

inet->mc_index = mreq.imr_ifindex;
--
2.19.1
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