mptcp: fix syncookie build error on UP
authorFlorian Westphal <fw@strlen.de>
Sat, 1 Aug 2020 14:39:59 +0000 (16:39 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sat, 1 Aug 2020 18:52:55 +0000 (11:52 -0700)
commit7126bd5c8bcbc015cf89864cf71d750e8f33f924
tree6819266d7ae3d0bb39789db40d73b139e78c1586
parent8b66a6fd34f519f4ad42c4ab0152c3c0782a7dbd
mptcp: fix syncookie build error on UP

kernel test robot says:
net/mptcp/syncookies.c: In function 'mptcp_join_cookie_init':
include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))

I forgot that spinock_t size is 0 on UP, so ARRAY_SIZE cannot be used.

Fixes: 9466a1ccebbe54 ("mptcp: enable JOIN requests even if cookies are in use")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/mptcp/syncookies.c