From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 30 Jan 2013 12:56:14 +0000 (+0100)
Subject: s390/barrier: convert mb() to define again
X-Git-Tag: v3.9-rc1~111^2~25
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=e06ef372839c0c33f5f91f892ae632cef38cd259;p=linux.git

s390/barrier: convert mb() to define again

Some of the now available common code drivers only compile if mb() is a define.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 10a508802940..16760eeb79b0 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -13,15 +13,12 @@
  * to devices.
  */
 
-static inline void mb(void)
-{
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
-	/* Fast-BCR without checkpoint synchronization */
-	asm volatile("bcr 14,0" : : : "memory");
+/* Fast-BCR without checkpoint synchronization */
+#define mb() do {  asm volatile("bcr 14,0" : : : "memory"); } while (0)
 #else
-	asm volatile("bcr 15,0" : : : "memory");
+#define mb() do {  asm volatile("bcr 15,0" : : : "memory"); } while (0)
 #endif
-}
 
 #define rmb()				mb()
 #define wmb()				mb()