Use offset_in_page macro instead of (addr & ~PAGE_MASK).
Signed-off-by: Geliang Tang <geliangt...@163.com>
---
include/linux/dma-mapping.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 3293f27..c0b27ff 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -131,10 +131,10 @@ static inline dma_addr_t dma_map_single_attrs(struct
device *dev, void *ptr,
kmemcheck_mark_initialized(ptr, size);
BUG_ON(!valid_dma_direction(dir));
addr = ops->map_page(dev, virt_to_page(ptr),
- (unsigned long)ptr & ~PAGE_MASK, size,
+ offset_in_page(ptr), size,
dir, attrs);
debug_dma_map_page(dev, virt_to_page(ptr),
- (unsigned long)ptr & ~PAGE_MASK, size,
+ offset_in_page(ptr), size,
dir, addr, true);
return addr;
}
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
