From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1427178AbdDVBSZ (ORCPT ); Fri, 21 Apr 2017 21:18:25 -0400 Received: from mail-io0-f193.google.com ([209.85.223.193]:35213 "EHLO mail-io0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1424984AbdDVBSX (ORCPT ); Fri, 21 Apr 2017 21:18:23 -0400 From: Geliang Tang To: Dan Williams , Vinod Koul , Andrew Morton , Ingo Molnar Cc: Geliang Tang , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] dmaengine: dmatest: use offset_in_page() macro Date: Sat, 22 Apr 2017 09:18:03 +0800 Message-Id: <5b8a96f45462de15e1713b8022b0e72d4f2231f6.1492757182.git.geliangtang@gmail.com> X-Mailer: git-send-email 2.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use offset_in_page() macro instead of open-coding. Signed-off-by: Geliang Tang --- drivers/dma/dmatest.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 54d581d..d042b2b 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -585,7 +585,7 @@ static int dmatest_func(void *data) for (i = 0; i < src_cnt; i++) { void *buf = thread->srcs[i]; struct page *pg = virt_to_page(buf); - unsigned pg_off = (unsigned long) buf & ~PAGE_MASK; + unsigned long pg_off = offset_in_page(buf); um->addr[i] = dma_map_page(dev->dev, pg, pg_off, um->len, DMA_TO_DEVICE); @@ -605,7 +605,7 @@ static int dmatest_func(void *data) for (i = 0; i < dst_cnt; i++) { void *buf = thread->dsts[i]; struct page *pg = virt_to_page(buf); - unsigned pg_off = (unsigned long) buf & ~PAGE_MASK; + unsigned long pg_off = offset_in_page(buf); dsts[i] = dma_map_page(dev->dev, pg, pg_off, um->len, DMA_BIDIRECTIONAL); -- 2.9.3