From 8af42949d1681379c1a97d230de9242c1f4f326a Mon Sep 17 00:00:00 2001
From: Stafford Horne <shorne@gmail.com>
Date: Mon, 13 Mar 2017 07:41:55 +0900
Subject: [PATCH] openrisc: xchg: fix `computed is not used` warning
When building allmodconfig this warning shows.
fs/ocfs2/file.c: In function 'ocfs2_file_write_iter':
./arch/openrisc/include/asm/cmpxchg.h:81:3: warning: value computed is
not used [-Wunused-value]
((typeof(*(ptr)))__xchg((unsigned long)(with), (ptr), sizeof(*(ptr))))
^
Applying the same patch logic that was done to the cmpxchg macro.
Signed-off-by: Stafford Horne <shorne@gmail.com>
---
arch/openrisc/include/asm/cmpxchg.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/openrisc/include/asm/cmpxchg.h b/arch/openrisc/include/asm/cmpxchg.h
index 5fcb9ac726938..f0a5d8b844d6b 100644
--- a/arch/openrisc/include/asm/cmpxchg.h
+++ b/arch/openrisc/include/asm/cmpxchg.h
@@ -77,7 +77,11 @@ static inline unsigned long __xchg(unsigned long val, volatile void *ptr,
return val;
}
-#define xchg(ptr, with) \
- ((typeof(*(ptr)))__xchg((unsigned long)(with), (ptr), sizeof(*(ptr))))
+#define xchg(ptr, with) \
+ ({ \
+ (__typeof__(*(ptr))) __xchg((unsigned long)(with), \
+ (ptr), \
+ sizeof(*(ptr))); \
+ })
#endif /* __ASM_OPENRISC_CMPXCHG_H */
--
2.30.2