From 8e7c15d6b5468f0dcdd887db1e5df88e629c00d6 Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Mon, 20 Aug 2012 10:26:47 +0200 Subject: [PATCH] batman-adv: Remove extra check in batadv_bit_get_packet batadv_bit_get_packet checks for all common situations before it decides that the new received packet indicates that the host was restarted. This extra condition check at the end of the function is not necessary because this condition is always true. This patch addresses Coverity #712296: Logically dead code Signed-off-by: Sven Eckelmann Signed-off-by: Antonio Quartulli --- net/batman-adv/bitarray.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index aea174cdbfb..5453b17d8df 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -79,20 +79,17 @@ int batadv_bit_get_packet(void *priv, unsigned long *seq_bits, * or the old packet got delayed somewhere in the network. The * packet should be dropped without calling this function if the * seqno window is protected. + * + * seq_num_diff <= -BATADV_TQ_LOCAL_WINDOW_SIZE + * or + * seq_num_diff >= BATADV_EXPECTED_SEQNO_RANGE */ - if (seq_num_diff <= -BATADV_TQ_LOCAL_WINDOW_SIZE || - seq_num_diff >= BATADV_EXPECTED_SEQNO_RANGE) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Other host probably restarted!\n"); - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Other host probably restarted!\n"); + bitmap_zero(seq_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); + if (set_mark) + batadv_set_bit(seq_bits, 0); - bitmap_zero(seq_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); - if (set_mark) - batadv_set_bit(seq_bits, 0); - - return 1; - } - - /* never reached */ - return 0; + return 1; }