[PATCH 3/3] dma-debug: use offset_in_page() macro

[Geliang Tang]

Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangt...@gmail.com>
---
 lib/dma-debug.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index b157b46..cd5a5a4 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -1502,7 +1502,7 @@ void debug_dma_alloc_coherent(struct device *dev, size_t 
size,
        entry->type      = dma_debug_coherent;
        entry->dev       = dev;
        entry->pfn       = page_to_pfn(virt_to_page(virt));
-       entry->offset    = (size_t) virt & ~PAGE_MASK;
+       entry->offset    = offset_in_page(virt);
        entry->size      = size;
        entry->dev_addr  = dma_addr;
        entry->direction = DMA_BIDIRECTIONAL;
@@ -1518,7 +1518,7 @@ void debug_dma_free_coherent(struct device *dev, size_t 
size,
                .type           = dma_debug_coherent,
                .dev            = dev,
                .pfn            = page_to_pfn(virt_to_page(virt)),
-               .offset         = (size_t) virt & ~PAGE_MASK,
+               .offset         = offset_in_page(virt),
                .dev_addr       = addr,
                .size           = size,
                .direction      = DMA_BIDIRECTIONAL,
-- 
2.9.3