From 89987844681757f68dd16b96c4d1d0cc1039183c Mon Sep 17 00:00:00 2001 From: Aleksey Makarov Date: Tue, 2 Jun 2015 11:00:24 -0700 Subject: [PATCH] net: thunderx: fix nicvf_set_rxfh() This fixes a copypaste bug that was discovered by a static analysis tool: The patch 4863dea3fab0: "net: Adding support for Cavium ThunderX network controller" from May 26, 2015, leads to the following static checker warning: drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c:517 nicvf_set_rxfh() warn: we tested 'hkey' before and it was 'false' drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c 506 /* We do not allow change in unsupported parameters */ 507 if (hkey || ^^^^ We return here. 508 (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)) 509 return -EOPNOTSUPP; 510 511 rss->enable = true; 512 if (indir) { 513 for (idx = 0; idx < rss->rss_size; idx++) 514 rss->ind_tbl[idx] = indir[idx]; 515 } 516 517 if (hkey) { ^^^^ So this is dead code. 518 memcpy(rss->key, hkey, RSS_HASH_KEY_SIZE * sizeof(u64)); 519 nicvf_set_rss_key(nic); 520 } 521 522 nicvf_config_rss(nic); 523 return 0; 524 } regards, dan carpenter Reported-by: Dan Carpenter Signed-off-by: Aleksey Makarov Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c index 0fc4a536afc9..16bd2d772db9 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c @@ -504,8 +504,7 @@ static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir, } /* We do not allow change in unsupported parameters */ - if (hkey || - (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)) + if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) return -EOPNOTSUPP; rss->enable = true; -- 2.20.1