linux-kernel - [PATCH] gdth: use offset_in

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Message-Id: <d59a52e71d50674189d121c5ed9d4b451101ff96.1492758211.git.geliangtang@gmail.com>
Date:   Sat, 22 Apr 2017 09:21:09 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Achim Leubner <achim_leubner@...ptec.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Geliang Tang <geliangtang@...il.com>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] gdth: use offset_in_page() macro

Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 drivers/scsi/gdth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index d020a13..557ce73 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -2648,7 +2648,7 @@ static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
 
     } else {
         page = virt_to_page(scp->sense_buffer);
-        offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
+	offset = offset_in_page(scp->sense_buffer);
         sense_paddr = pci_map_page(ha->pdev,page,offset,
                                    16,PCI_DMA_FROMDEVICE);
 
-- 
2.9.3