[PATCH v3 3/5] bug: When !CONFIG_BUG, make WARN call no_printk to check format and args

[Josh Triplett]

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

Reported-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
v3: Patch unchanged from v2.
 include/asm-generic/bug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2d54d8d..a97fa11 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
-- 
1.9.0

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