linux-kernel - [PATCH] RDMA/amso1100: use offset_in

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Message-Id: <53f0aa15e8f3df09245cddb23875e16700121550.1443840917.git.geliangtang@163.com>
Date:	Sat,  3 Oct 2015 11:00:14 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Doug Ledford <dledford@...hat.com>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steve Wise <swise@...ngridcomputing.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Matan Barak <matanb@...lanox.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Michael Wang <yun.wang@...fitbricks.com>,
	Haggai Eran <haggaie@...lanox.com>
Cc:	Geliang Tang <geliangtang@....com>, linux-rdma@...r.kernel.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/amso1100: use offset_in_page macro

Use offset_in_page macro instead of (addr & ~PAGE_MASK).

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 drivers/staging/rdma/amso1100/c2_alloc.c    | 2 +-
 drivers/staging/rdma/amso1100/c2_provider.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rdma/amso1100/c2_alloc.c b/drivers/staging/rdma/amso1100/c2_alloc.c
index 78d247e..039872d 100644
--- a/drivers/staging/rdma/amso1100/c2_alloc.c
+++ b/drivers/staging/rdma/amso1100/c2_alloc.c
@@ -131,7 +131,7 @@ void c2_free_mqsp(__be16 *mqsp)
 	*mqsp = (__force __be16) head->head;
 
 	/* Compute the shared_ptr index */
-	idx = ((unsigned long) mqsp & ~PAGE_MASK) >> 1;
+	idx = (offset_in_page(mqsp)) >> 1;
 	idx -= (unsigned long) &(((struct sp_chunk *) 0)->shared_ptr[0]) >> 1;
 
 	/* Point this index at the head */
diff --git a/drivers/staging/rdma/amso1100/c2_provider.c b/drivers/staging/rdma/amso1100/c2_provider.c
index 25c3f00..956d76b 100644
--- a/drivers/staging/rdma/amso1100/c2_provider.c
+++ b/drivers/staging/rdma/amso1100/c2_provider.c
@@ -359,7 +359,7 @@ static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd,
 
 	for (i = 0; i < num_phys_buf; i++) {
 
-		if (buffer_list[i].addr & ~PAGE_MASK) {
+		if (offset_in_page(buffer_list[i].addr)) {
 			pr_debug("Unaligned Memory Buffer: 0x%x\n",
 				(unsigned int) buffer_list[i].addr);
 			return ERR_PTR(-EINVAL);
-- 
2.5.0


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