linux-kernel - [PATCH 2/3] dmaengine: mv_xor: use offset_in

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Date:   Sat, 22 Apr 2017 09:18:04 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Dan Williams <dan.j.williams@...el.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>
Cc:     Geliang Tang <geliangtang@...il.com>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] dmaengine: mv_xor: use offset_in_page() macro

Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 drivers/dma/mv_xor.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index ea53b87..25bc5b1 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -960,7 +960,7 @@ static int mv_chan_memcpy_self_test(struct mv_xor_chan *mv_chan)
 	}
 
 	src_dma = dma_map_page(dma_chan->device->dev, virt_to_page(src),
-			       (size_t)src & ~PAGE_MASK, PAGE_SIZE,
+			       offset_in_page(src), PAGE_SIZE,
 			       DMA_TO_DEVICE);
 	unmap->addr[0] = src_dma;
 
@@ -972,7 +972,7 @@ static int mv_chan_memcpy_self_test(struct mv_xor_chan *mv_chan)
 	unmap->to_cnt = 1;
 
 	dest_dma = dma_map_page(dma_chan->device->dev, virt_to_page(dest),
-				(size_t)dest & ~PAGE_MASK, PAGE_SIZE,
+				offset_in_page(dest), PAGE_SIZE,
 				DMA_FROM_DEVICE);
 	unmap->addr[1] = dest_dma;
 
-- 
2.9.3