[PATCH] mmu: flush ttb in map_io_sections

[Lucas Stach]

From: Lucas Stach <l.stach at pengutronix.de>

We need to flush out the ttb in order to make the
changes observable to the page walker.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 arch/arm/cpu/mmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index bf0141b946db..e4afcc84115d 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -188,6 +188,7 @@ void *map_io_sections(unsigned long phys, void *_start, size_t size)
 	for (sec = start; sec < start + size; sec += (1 << 20))
 		ttb[sec >> 20] = (phys++ << 20) | PMD_SECT_DEF_UNCACHED;
 
+	dma_flush_range((unsigned long)ttb, (unsigned long)ttb + 0x4000);
 	tlb_invalidate();
 	return _start;
 }
-- 
1.9.3