[PATCH] powerpc/wii: properly disable use of BATs when requested.

'nobats' kernel parameter or some options like CONFIG_DEBUG_PAGEALLOC
deny the use of BATS for mapping memory.

This patch makes sure that the specific wii RAM mapping function
takes it into account as well.

Fixes: de32400dd26e ("wii: use both mem1 and mem2 as ram")
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Leroy <redacted>
---
 arch/powerpc/platforms/embedded6xx/wii.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c
index ecf703ee3a76..bae843e32ae7 100644
--- a/arch/powerpc/platforms/embedded6xx/wii.c
+++ b/arch/powerpc/platforms/embedded6xx/wii.c

@@ -82,6 +82,9 @@ unsigned long __init wii_mmu_mapin_mem2(unsigned long top)
 
 	/* MEM2 64MB@0x10000000 */
 	delta = wii_hole_start + wii_hole_size;
+	if (__map_without_bats)
+		return delta;
+
 	size = top - delta;
 	for (bl = 128<<10; bl < max_size; bl <<= 1) {
 		if (bl * 2 > size)

-- 
2.13.3