tree bf2724e414a7035fb883e9e8f4b165fc2dbe9894
parent 3d46eee5a5f2f22ca04e2139e8c9a16b81d16073
author Arnd Bergmann <arnd@arndb.de> 1534196585 +0200
committer David S. Miller <davem@davemloft.net> 1534218349 -0700

l2tp: fix unused function warning

Removing one of the callers of pppol2tp_session_get_sock caused a harmless
warning in some configurations:

net/l2tp/l2tp_ppp.c:142:21: 'pppol2tp_session_get_sock' defined but not used [-Wunused-function]

Rather than adding another #ifdef here, using a proper IS_ENABLED()
check makes the code more readable and avoids those warnings while
letting the compiler figure out for itself which code is needed.

This adds one pointer for the unused show() callback in struct
l2tp_session, but that seems harmless.

Fixes: b0e29063dcb3 ("l2tp: remove pppol2tp_session_ioctl()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>