From: Jiang Liu <liuj97@gmail.com>
Date: Thu, 21 Mar 2013 16:31:44 +0000 (+0800)
Subject: h8300: add missing definition for read_barries_depends()
X-Git-Tag: next-20130607~122^2~14
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e0c8d8ae2976742d8622598c22b8359f39260a90;p=karo-tx-linux.git

h8300: add missing definition for read_barries_depends()

Add missing definition for read_barries_depends() for h8300 to fix error:
kernel/task_work.c: In function 'task_work_cancel':
kernel/task_work.c:38:3: error: implicit declaration of function 'read_barrier_depends' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [kernel/task_work.o] Error 1
make: *** [kernel] Error 2

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
---

diff --git a/arch/h8300/include/asm/barrier.h b/arch/h8300/include/asm/barrier.h
index c7283c343c55..9e0aa9fc195d 100644
--- a/arch/h8300/include/asm/barrier.h
+++ b/arch/h8300/include/asm/barrier.h
@@ -12,6 +12,8 @@
 #define wmb()  asm volatile (""   : : :"memory")
 #define set_mb(var, value) do { xchg(&var, value); } while (0)
 
+#define read_barrier_depends()	do { } while (0)
+
 #ifdef CONFIG_SMP
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()