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net: secure_seq: Fix warning when CONFIG_IPV6 and CONFIG_INET are not selected 

[ Upstream commit cb03db9d0e964568407fb08ea46cc2b6b7f67587 ]

net_secret() is only used when CONFIG_IPV6 or CONFIG_INET are selected.

Building a defconfig with both of these symbols unselected (Using the ARM
at91sam9rl_defconfig, for example) leads to the following build warning:

$ make at91sam9rl_defconfig
#
# configuration written to .config
#

$ make net/core/secure_seq.o
scripts/kconfig/conf --silentoldconfig Kconfig
  CHK     include/config/kernel.release
  CHK     include/generated/uapi/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
  CALL    scripts/checksyscalls.sh
  CC      net/core/secure_seq.o
net/core/secure_seq.c:17:13: warning: 'net_secret_init' defined but not used [-Wunused-function]

Fix this warning by protecting the definition of net_secret() with these
symbols.

Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Estevam 2013-10-05 17:56:59 -03:00 committed by Greg Kroah-Hartman
parent 42fc155b9f
commit b9396c4c9e
1 changed files with 2 additions and 0 deletions
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2
net/core/secure_seq.c
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@ -10,6 +10,7 @@
#include <net/secure_seq.h>
#if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET)
#define NET_SECRET_SIZE (MD5_MESSAGE_BYTES / 4)
static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
@ -29,6 +30,7 @@ static void net_secret_init(void)
cmpxchg(&net_secret[--i], 0, tmp);
}
}
#endif
#ifdef CONFIG_INET
static u32 seq_scale(u32 seq)