net: ppp: Fix modular build for PPPOLAC and PPPOPNS

Unlike other configurations in net/ppp, PPPOLAC and PPPOPNS
are defined as boolean configuration options. In allmodconfig builds
(or, specifically, if PPP and some of the other PPP protocols were
built as modules), this resulted in build errors such as the following,
since pppox was built both as module and into the kernel.

ERROR: "pppox_ioctl" [net/l2tp/l2tp_ppp.ko] undefined!
ERROR: "unregister_pppox_proto" [net/l2tp/l2tp_ppp.ko] undefined!
ERROR: "register_pppox_proto" [net/l2tp/l2tp_ppp.ko] undefined!
ERROR: "pppox_unbind_sock" [net/l2tp/l2tp_ppp.ko] undefined!

Fix the problem by defining PPPOLAC and PPPOPNS tristate.

Signed-off-by: Guenter Roeck <groeck@chromium.org>

diff --git a/drivers/net/ppp/Kconfig b/drivers/net/ppp/Kconfig
index e4cf44b..282aec4 100644 (file)
--- a/drivers/net/ppp/Kconfig
+++ b/drivers/net/ppp/Kconfig
@@ -150,7 +150,7 @@ config PPPOL2TP
 if TTY
 
 config PPPOLAC
-       bool "PPP on L2TP Access Concentrator"
+       tristate "PPP on L2TP Access Concentrator"
        depends on PPP && INET
        help
          L2TP (RFC 2661) is a tunneling protocol widely used in virtual private
@@ -159,7 +159,7 @@ config PPPOLAC
          fairly simple and suited for clients.
 
 config PPPOPNS
-       bool "PPP on PPTP Network Server"
+       tristate "PPP on PPTP Network Server"
        depends on PPP && INET
        help
          PPTP (RFC 2637) is a tunneling protocol widely used in virtual private