From: Jeff Dike <jdike@addtoit.com>
Date: Fri, 6 Jan 2006 08:19:02 +0000 (-0800)
Subject: [PATCH] uml: better diagnostics for broken configs
X-Git-Tag: v2.6.16-rc1~936^2~131
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44700a4469b6bb89e6f1edd32b8a4a915dd967c6;p=linux-2.6

[PATCH] uml: better diagnostics for broken configs

Produce a compile-time error if both MODE_SKAS and MODE_TT are disabled.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/um/include/choose-mode.h b/arch/um/include/choose-mode.h
index f25fa83a5d..b87b36a87d 100644
--- a/arch/um/include/choose-mode.h
+++ b/arch/um/include/choose-mode.h
@@ -23,6 +23,9 @@ static inline void *__choose_mode(void *tt, void *skas) {
 
 #elif defined(UML_CONFIG_MODE_TT)
 #define CHOOSE_MODE(tt, skas) (tt)
+
+#else
+#error CONFIG_MODE_SKAS and CONFIG_MODE_TT are both disabled
 #endif
 
 #define CHOOSE_MODE_PROC(tt, skas, args...) \