linux-kernel - [PATCH] staging: comedi: Use offset_in

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Message-ID: <20170703231334.GA2576@amitoj-Inspiron-3542>
Date:   Mon, 3 Jul 2017 19:13:34 -0400
From:   Amitoj Kaur Chawla <amitoj1606@...il.com>
To:     abbotti@....co.uk, hsweeten@...ionengravers.com,
        gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: comedi: Use offset_in_page macro

Use offset_in_page macro instead of (var & ~PAGE_MASK)

The Coccinelle semantic patch used to make this change is as follows:
// <smpl>
@@
unsigned long p;
@@
- p & ~PAGE_MASK
+ offset_in_page(p)
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@...il.com>
---
 drivers/staging/comedi/comedi_buf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/comedi/comedi_buf.c b/drivers/staging/comedi/comedi_buf.c
index 8e9b30b..b455ff6 100644
--- a/drivers/staging/comedi/comedi_buf.c
+++ b/drivers/staging/comedi/comedi_buf.c
@@ -165,7 +165,7 @@ int comedi_buf_map_put(struct comedi_buf_map *bm)
 int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,
 			  void *buf, int len, int write)
 {
-	unsigned int pgoff = offset & ~PAGE_MASK;
+	unsigned int pgoff = offset_in_page(offset);
 	unsigned long pg = offset >> PAGE_SHIFT;
 	int done = 0;
 
-- 
2.7.4