From: Jeff Dike <jdike@addtoit.com>

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>
---

 arch/um/include/choose-mode.h |    3 +++
 1 files changed, 3 insertions(+)

diff -puN arch/um/include/choose-mode.h~uml-better-diagnostics-for-broken-configs arch/um/include/choose-mode.h
--- 25/arch/um/include/choose-mode.h~uml-better-diagnostics-for-broken-configs	Wed Jan  4 15:25:51 2006
+++ 25-akpm/arch/um/include/choose-mode.h	Wed Jan  4 15:25:51 2006
@@ -23,6 +23,9 @@ static inline void *__choose_mode(void *
 
 #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...) \
_