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>
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@ -516,13 +516,11 @@ static void prb_init_blk_timer(struct packet_sock *po,
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static void prb_setup_retire_blk_timer(struct packet_sock *po, int tx_ring)
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{
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struct tpacket_kbdq_core *pkc;
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if (tx_ring)
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BUG();
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pkc = tx_ring ? &po->tx_ring.prb_bdqc : &po->rx_ring.prb_bdqc;
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prb_init_blk_timer(po, pkc, prb_retire_rx_blk_timer_expired);
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prb_init_blk_timer(po, &po->rx_ring.prb_bdqc,
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prb_retire_rx_blk_timer_expired);
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}
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static int prb_calc_retire_blk_tmo(struct packet_sock *po,
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