From 8e99469ab0f821bea77625cd4775ca529d4ca7d4 Mon Sep 17 00:00:00 2001 From: Geliang Tang <geliangtang@163.com> Date: Wed, 20 Jan 2016 15:02:12 -0800 Subject: [PATCH] dma-mapping: use offset_in_page macro Use offset_in_page macro instead of (addr & ~PAGE_MASK). Signed-off-by: Geliang Tang <geliangtang@163.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- 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 d6b575bb45a7..75857cda38e9 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -129,10 +129,10 @@ 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; } -- GitLab