[PATCH 02/12] ARM: mmu: Simplify the use of dma_inv_range()

[Andrey Smirnov]

Simplify the use of dma_inv_range() by changing its signature to
accept pointer to start of the data and data size. This change allows
us to avoid a whole bunch of repetitive arithmetic currently done by
all of the callers.

Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 arch/arm/cpu/mmu.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 2b7b9e30a..390ccc581 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -118,8 +118,11 @@ static void dma_flush_range(void *ptr, size_t size)
                outer_cache.flush_range(start, end);
 }
 
-static void dma_inv_range(unsigned long start, unsigned long end)
+static void dma_inv_range(void *ptr, size_t size)
 {
+       unsigned long start = (unsigned long)ptr;
+       unsigned long end = start + size;
+
        if (outer_cache.inv_range)
                outer_cache.inv_range(start, end);
        __dma_inv_range(start, end);
@@ -507,7 +510,7 @@ static void *dma_alloc_map(size_t size, dma_addr_t 
*dma_handle, unsigned flags)
        if (dma_handle)
                *dma_handle = (dma_addr_t)ret;
 
-       dma_inv_range((unsigned long)ret, (unsigned long)ret + size);
+       dma_inv_range(ret, size);
 
        arch_remap_range(ret, size, flags);
 
@@ -536,7 +539,7 @@ void dma_sync_single_for_cpu(dma_addr_t address, size_t 
size,
                             enum dma_data_direction dir)
 {
        if (dir != DMA_TO_DEVICE)
-               dma_inv_range(address, address + size);
+               dma_inv_range((void *)address, size);
 }
 
 void dma_sync_single_for_device(dma_addr_t address, size_t size,
-- 
2.20.1


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