[PATCH] string_choices: Add wrapper for str_down_up()

[Kees Cook]

The string choice functions which are not clearly true/false synonyms
also have inverted wrappers. Add this for str_down_up() as well.

Suggested-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Kees Cook <kees@xxxxxxxxxx>
---
Cc: Andy Shevchenko <andy@xxxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Cc: linux-hardening@xxxxxxxxxxxxxxx
---
 include/linux/string_choices.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/string_choices.h b/include/linux/string_choices.h
index bcde3c9cff81..1320bcdcb89c 100644
--- a/include/linux/string_choices.h
+++ b/include/linux/string_choices.h
@@ -46,6 +46,7 @@ static inline const char *str_up_down(bool v)
 {
 	return v ? "up" : "down";
 }
+#define str_down_up(v)		str_up_down(!(v))
 
 /**
  * str_plural - Return the simple pluralization based on English counts
-- 
2.34.1