From 3ed90f766dab55fc9d49638a02704becaec379ae Mon Sep 17 00:00:00 2001
From: Jesper Juhl <jj@chaosbits.net>
Date: Mon, 14 Nov 2011 00:09:21 -0500
Subject: [PATCH] net/packet: remove dead code and unneeded variable from
prb_setup_retire_blk_timer()
We test for 'tx_ring' being != zero and BUG() if that's the case. So after
that check there is no way that 'tx_ring' could be anything _but_ zero, so
testing it again is just dead code. Once that dead code is removed, the
'pkc' local variable becomes entirely redundant, so remove that as well.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/packet/af_packet.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 82a6f34d39d01..ab10e84eda3af 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -516,13 +516,11 @@ static void prb_init_blk_timer(struct packet_sock *po,
static void prb_setup_retire_blk_timer(struct packet_sock *po, int tx_ring)
{
- struct tpacket_kbdq_core *pkc;
-
if (tx_ring)
BUG();
- pkc = tx_ring ? &po->tx_ring.prb_bdqc : &po->rx_ring.prb_bdqc;
- prb_init_blk_timer(po, pkc, prb_retire_rx_blk_timer_expired);
+ prb_init_blk_timer(po, &po->rx_ring.prb_bdqc,
+ prb_retire_rx_blk_timer_expired);
}
static int prb_calc_retire_blk_tmo(struct packet_sock *po,