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

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'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: de32400dd2 ("wii: use both mem1 and mem2 as ram")
Cc: stable@vger.kernel.org
Reviewed-by: Jonathan Neuschafer <j.neuschaefer@gmx.net>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-02-21 19:08:37 +00:00 committed by Michael Ellerman
parent e4470bd6a4
commit 6d183ca8ba
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/platforms/embedded6xx/wii.c
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@ -83,6 +83,10 @@ unsigned long __init wii_mmu_mapin_mem2(unsigned long top)
/* MEM2 64MB@0x10000000 */
delta = wii_hole_start + wii_hole_size;
size = top - delta;
if (__map_without_bats)
return delta;
for (bl = 128<<10; bl < max_size; bl <<= 1) {
if (bl * 2 > size)
break;