ixgbe: use pcie_capability_read_word() to simplify code

use pcie_capability_read_word() to simplify code.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 6828d0e..ce3eb60 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -153,7 +153,6 @@ MODULE_VERSION(DRV_VERSION);
 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
                                          u32 reg, u16 *value)
 {
-       int pos = 0;
        struct pci_dev *parent_dev;
        struct pci_bus *parent_bus;
 
@@ -165,11 +164,10 @@ static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
        if (!parent_dev)
                return -1;
 
-       pos = pci_find_capability(parent_dev, PCI_CAP_ID_EXP);
-       if (!pos)
+       if (!pci_is_pcie(parent_dev))
                return -1;
 
-       pci_read_config_word(parent_dev, pos + reg, value);
+       pcie_capability_read_word(parent_dev, reg, value);
        return 0;
 }