sh: Don't perform an icbi on a P2 address
The legacy P2 area may not always be mapped (for example when using
PMB). So perform an icbi on an address that we know will always be
mapped.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h
index c15415b..b74d253 100644
--- a/arch/sh/include/asm/system.h
+++ b/arch/sh/include/asm/system.h
@@ -32,7 +32,7 @@
#define mb() __asm__ __volatile__ ("synco": : :"memory")
#define rmb() mb()
#define wmb() __asm__ __volatile__ ("synco": : :"memory")
-#define ctrl_barrier() __icbi(0xa8000000)
+#define ctrl_barrier() __icbi(PAGE_OFFSET)
#define read_barrier_depends() do { } while(0)
#else
#define mb() __asm__ __volatile__ ("": : :"memory")