arch/powerpc/lib/bat_rw.c: Fix GCC 4.6 build warning

Fix:
bat_rw.c: In function 'write_bat':
bat_rw.c:38:6: warning: variable 'batn' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Andy Fleming <afleming@gmail.com>

diff --git a/arch/powerpc/lib/bat_rw.c b/arch/powerpc/lib/bat_rw.c
index c48c24015153ade7180d6accc9e62968127e792d..113c293c03618dd25bd9cecbb61b7e31fd711f7b 100644 (file)
--- a/arch/powerpc/lib/bat_rw.c
+++ b/arch/powerpc/lib/bat_rw.c
@@ -26,6 +26,7 @@
 #include <asm/processor.h>
 #include <asm/mmu.h>
 #include <asm/io.h>
+#include <linux/compiler.h>
 
 #ifdef CONFIG_ADDR_MAP
 #include <addr_map.h>
@@ -35,7 +36,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 int write_bat (ppc_bat_t bat, unsigned long upper, unsigned long lower)
 {
-       int batn = -1;
+       __maybe_unused int batn = -1;
 
        sync();