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net/packet: Remove redundant assignment to ret

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Variable ret is set to '0' or '-EBUSY', but this value is never read
as it is not used later on, hence it is a redundant assignment and
can be removed.

Clean up the following clang-analyzer warning:

net/packet/af_packet.c:3936:4: warning: Value stored to 'ret' is never
read [clang-analyzer-deadcode.DeadStores].

net/packet/af_packet.c:3933:4: warning: Value stored to 'ret' is never
read [clang-analyzer-deadcode.DeadStores].

No functional change.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiapeng Chong 2021-05-17 18:15:25 +08:00 committed by David S. Miller
parent 8ed2e60b77
commit 25c55b38d8
1 changed files with 2 additions and 5 deletions
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7
net/packet/af_packet.c
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@ -3923,12 +3923,9 @@ packet_setsockopt(struct socket *sock, int level, int optname, sockptr_t optval,
return -EFAULT;
lock_sock(sk);
if (po->rx_ring.pg_vec || po->tx_ring.pg_vec) {
ret = -EBUSY;
} else {
if (!po->rx_ring.pg_vec && !po->tx_ring.pg_vec)
po->tp_tx_has_off = !!val;
ret = 0;
}
release_sock(sk);
return 0;
}