bug: when !CONFIG_BUG, make WARN call no_printk to check format and args

The stub version of WARN for !CONFIG_BUG completely ignored its format
string and subsequent arguments; make it check them instead, using
no_printk.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2d54d8df7bd1..a97fa11aaf41 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -155,6 +155,7 @@ extern void warn_slowpath_null(const char *file, const int line);
 #ifndef WARN
 #define WARN(condition, format...) ({                                   \
         int __ret_warn_on = !!(condition);                              \
+        no_printk(format);                                              \
         unlikely(__ret_warn_on);                                        \
 })
 #endif