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bpfilter: fix building without CONFIG_INET 

bpfilter_process_sockopt is a callback that gets called from
ip_setsockopt() and ip_getsockopt(). However, when CONFIG_INET is
disabled, it never gets called at all, and assigning a function to the
callback pointer results in a link failure:

net/bpfilter/bpfilter_kern.o: In function `__stop_umh':
bpfilter_kern.c:(.text.unlikely+0x3): undefined reference to `bpfilter_process_sockopt'
net/bpfilter/bpfilter_kern.o: In function `load_umh':
bpfilter_kern.c:(.init.text+0x73): undefined reference to `bpfilter_process_sockopt'

Since there is no caller in this configuration, I assume we can
simply make the assignment conditional.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann 2018-05-29 11:55:06 +02:00 committed by David S. Miller
parent f03329627b
commit d71dbdaa2d
1 changed files with 5 additions and 2 deletions
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7
net/bpfilter/bpfilter_kern.c
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@ -33,7 +33,8 @@ static void shutdown_umh(struct umh_info *info)
static void __stop_umh(void)
{
if (bpfilter_process_sockopt) {
if (IS_ENABLED(CONFIG_INET) &&
bpfilter_process_sockopt) {
bpfilter_process_sockopt = NULL;
shutdown_umh(&info);
}
@ -98,7 +99,9 @@ static int __init load_umh(void)
stop_umh();
return -EFAULT;
}
bpfilter_process_sockopt = &__bpfilter_process_sockopt;
if (IS_ENABLED(CONFIG_INET))
bpfilter_process_sockopt = &__bpfilter_process_sockopt;
return 0;
}