[PATCH v2 12/28] ARM: mmu: Drop needless shifting in map_io_sections()

[Andrey Smirnov]

Instead of shifting phys right by 20 and then again left by the same
amount, just convert the code to expect it to be in unit of bytes all
the time.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 arch/arm/cpu/mmu.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 5600cfbe2..40bef016b 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -196,9 +196,8 @@ void *map_io_sections(unsigned long phys, void *_start, size_t size)
 {
 	unsigned long start = (unsigned long)_start, sec;
 
-	phys >>= 20;
-	for (sec = start; sec < start + size; sec += (1 << 20))
-		ttb[sec >> 20] = (phys++ << 20) | PMD_SECT_DEF_UNCACHED;
+	for (sec = start; sec < start + size; sec += (1 << 20), phys += SZ_1M)
+		ttb[sec >> 20] = phys | PMD_SECT_DEF_UNCACHED;
 
 	dma_flush_range((unsigned long)ttb, (unsigned long)ttb + 0x4000);
 	tlb_invalidate();
-- 
2.17.0