linux-kernel - [PATCH 2/7] scsi/csiostor: use pcie_capability

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Date:	Tue, 3 Sep 2013 15:35:10 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Gavin Shan <shangw@...ux.vnet.ibm.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	"David S. Miller" <davem@...emloft.net>
CC:	<linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	Yijing Wang <wangyijing@...wei.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	Naresh Kumar Inna <naresh@...lsio.com>,
	Jesper Juhl <jj@...osbits.net>, <linux-scsi@...r.kernel.org>
Subject: [PATCH 2/7] scsi/csiostor: use pcie_capability_xxx to simplify code

Pcie_capability_xxx() interfaces were introudced to
simplify code to access PCIe Cap config space. And
because PCI core saves the PCIe Cap offset in
set_pcie_port_type() when device is enumerated.
So we can use pci_is_pcie() instead.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
Cc: Jiang Liu <jiang.liu@...wei.com>
Cc: "James E.J. Bottomley" <JBottomley@...allels.com>
Cc: Naresh Kumar Inna <naresh@...lsio.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Jesper Juhl <jj@...osbits.net>
Cc: linux-scsi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/scsi/csiostor/csio_hw.c |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/csiostor/csio_hw.c b/drivers/scsi/csiostor/csio_hw.c
index 0eb35b9..be9a6ef 100644
--- a/drivers/scsi/csiostor/csio_hw.c
+++ b/drivers/scsi/csiostor/csio_hw.c
@@ -856,15 +856,12 @@ static void
 csio_set_pcie_completion_timeout(struct csio_hw *hw, u8 range)
 {
 	uint16_t val;
-	int pcie_cap;
 
-	if (!csio_pci_capability(hw->pdev, PCI_CAP_ID_EXP, &pcie_cap)) {
-		pci_read_config_word(hw->pdev,
-				     pcie_cap + PCI_EXP_DEVCTL2, &val);
+	if (pci_is_pcie(hw->pdev)) {
+		pcie_capability_read_word(hw->pdev, PCI_EXP_DEVCTL2, &val);
 		val &= 0xfff0;
 		val |= range ;
-		pci_write_config_word(hw->pdev,
-				      pcie_cap + PCI_EXP_DEVCTL2, val);
+		pcie_capability_write_word(hw->pdev, PCI_EXP_DEVCTL2, val);
 	}
 }
 
-- 
1.7.1


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