linux-kernel - [PATCH 7/8] scsi: esas2r: Use FIELD

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Message-Id: <20230911121501.21910-8-ilpo.jarvinen@linux.intel.com>
Date:   Mon, 11 Sep 2023 15:15:00 +0300
From:   Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To:     linux-pci@...r.kernel.org, Bjorn Helgaas <helgaas@...nel.org>,
        Bradley Grove <linuxdrivers@...otech.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 7/8] scsi: esas2r: Use FIELD_GET() to extract Link Width

Use FIELD_GET() to extract PCIe Negotiated and Maximum Link Width fields
instead of custom masking and shifting.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
 drivers/scsi/esas2r/esas2r_ioctl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/esas2r/esas2r_ioctl.c b/drivers/scsi/esas2r/esas2r_ioctl.c
index 055d2e87a2c8..3252780fd099 100644
--- a/drivers/scsi/esas2r/esas2r_ioctl.c
+++ b/drivers/scsi/esas2r/esas2r_ioctl.c
@@ -41,6 +41,8 @@
  * USA.
  */
 
+#include <linux/bitfield.h>
+
 #include "esas2r.h"
 
 /*
@@ -797,11 +799,9 @@ static int hba_ioctl_callback(struct esas2r_adapter *a,
 			gai->pci.link_speed_max =
 				(u8)(caps & PCI_EXP_LNKCAP_SLS);
 			gai->pci.link_width_curr =
-				(u8)((stat & PCI_EXP_LNKSTA_NLW)
-				     >> PCI_EXP_LNKSTA_NLW_SHIFT);
+				(u8)FIELD_GET(PCI_EXP_LNKSTA_NLW, stat);
 			gai->pci.link_width_max =
-				(u8)((caps & PCI_EXP_LNKCAP_MLW)
-				     >> 4);
+				(u8)FIELD_GET(PCI_EXP_LNKCAP_MLW, caps);
 		}
 
 		gai->pci.msi_vector_cnt = 1;
-- 
2.30.2