[-mm patch] mutex.h bogus __must_check (was Re: 2.6.21-mm1)

Frederik Deweerdt
2007-05-05T16:35:00Z

On Sat, May 05, 2007 at 01:49:55AM -0700, Andrew Morton wrote:
>
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21/2.6.21-mm1/
>
__must_check was added to mutex_lock_nested() which returns void. This
causes the following warnings:
include/linux/mutex.h:128: warning: 'warn_unused_result' attribute ignored

This was introduced by
broken-out/mutex_lock_interruptible-add-__must_check.patch

Regards,
Frederik

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 616500e..85e4225 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -124,8 +124,8 @@ extern void fastcall mutex_lock(struct mutex *lock);
extern int fastcall mutex_lock_interruptible(struct mutex *lock);

#ifdef CONFIG_DEBUG_LOCK_ALLOC
-extern void __must_check mutex_lock_nested(struct mutex *lock,
- unsigned int subclass);
+extern void mutex_lock_nested(struct mutex *lock,
+ unsigned int subclass);
extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
unsigned int subclass);
#else