[ath6kl:master 1344/1352] net/ipv4/ip_gre.c:138:15: error: redefinition of 'gre_flags_to_tnl_flags'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git master
head:   140eb352c0398fd9c361e0fded58055c893db482
commit: 13e441e25c7c41683748ffc48a30a83fa2e4ea7b [1344/1352] Merge remote-tracking branch 'wireless-drivers-next/master'
config: x86_64-rhel (attached as .config)
compiler: gcc-4.9 (Debian 4.9.3-14) 4.9.3
reproduce:
        git checkout 13e441e25c7c41683748ffc48a30a83fa2e4ea7b
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the ath6kl/master HEAD 140eb352c0398fd9c361e0fded58055c893db482 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

>> net/ipv4/ip_gre.c:138:15: error: redefinition of 'gre_flags_to_tnl_flags'
    static __be16 gre_flags_to_tnl_flags(__be16 flags)
                  ^
   In file included from net/ipv4/ip_gre.c:49:0:
   include/net/gre.h:44:22: note: previous definition of 'gre_flags_to_tnl_flags' was here
    static inline __be16 gre_flags_to_tnl_flags(__be16 flags)
                         ^
   net/ipv4/ip_gre.c:160:15: warning: 'tnl_flags_to_gre_flags' defined but not used [-Wunused-function]
    static __be16 tnl_flags_to_gre_flags(__be16 tflags)
                  ^
   net/ipv4/ip_gre.c:183:12: warning: 'parse_gre_header' defined but not used [-Wunused-function]
    static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
               ^

vim +/gre_flags_to_tnl_flags +138 net/ipv4/ip_gre.c

f99189b1 Eric Dumazet    2009-11-17  122  static int ipgre_net_id __read_mostly;
c5441932 Pravin B Shelar 2013-03-25  123  static int gre_tap_net_id __read_mostly;
^1da177e Linus Torvalds  2005-04-16  124  
9f57c67c Pravin B Shelar 2015-08-07  125  static int ip_gre_calc_hlen(__be16 o_flags)
9f57c67c Pravin B Shelar 2015-08-07  126  {
9f57c67c Pravin B Shelar 2015-08-07  127  	int addend = 4;
9f57c67c Pravin B Shelar 2015-08-07  128  
9f57c67c Pravin B Shelar 2015-08-07  129  	if (o_flags & TUNNEL_CSUM)
9f57c67c Pravin B Shelar 2015-08-07  130  		addend += 4;
9f57c67c Pravin B Shelar 2015-08-07  131  	if (o_flags & TUNNEL_KEY)
9f57c67c Pravin B Shelar 2015-08-07  132  		addend += 4;
9f57c67c Pravin B Shelar 2015-08-07  133  	if (o_flags & TUNNEL_SEQ)
9f57c67c Pravin B Shelar 2015-08-07  134  		addend += 4;
9f57c67c Pravin B Shelar 2015-08-07  135  	return addend;
9f57c67c Pravin B Shelar 2015-08-07  136  }
9f57c67c Pravin B Shelar 2015-08-07  137  
9f57c67c Pravin B Shelar 2015-08-07 @138  static __be16 gre_flags_to_tnl_flags(__be16 flags)
9f57c67c Pravin B Shelar 2015-08-07  139  {
9f57c67c Pravin B Shelar 2015-08-07  140  	__be16 tflags = 0;
9f57c67c Pravin B Shelar 2015-08-07  141  
9f57c67c Pravin B Shelar 2015-08-07  142  	if (flags & GRE_CSUM)
9f57c67c Pravin B Shelar 2015-08-07  143  		tflags |= TUNNEL_CSUM;
9f57c67c Pravin B Shelar 2015-08-07  144  	if (flags & GRE_ROUTING)
9f57c67c Pravin B Shelar 2015-08-07  145  		tflags |= TUNNEL_ROUTING;
9f57c67c Pravin B Shelar 2015-08-07  146  	if (flags & GRE_KEY)

:::::: The code at line 138 was first introduced by commit
:::::: 9f57c67c379d88a10e8ad676426fee5ae7341b14 gre: Remove support for sharing GRE protocol hook.

:::::: TO: Pravin B Shelar <pshelar at nicira.com>
:::::: CC: David S. Miller <davem at davemloft.net>

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0-DAY kernel test infrastructure                Open Source Technology Center
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