iwlwifi: Use PCI Express Capability accessors

Use PCI Express Capability access functions to simplify iwlwifi driver.

[bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 939c2f78df5833cc1d203deabe311568dc7ff88c..26bdbe3ff7cfeb28b67228f4f5b4e9eeef49d7c6 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -675,13 +675,10 @@ static void iwl_set_pwr_vmain(struct iwl_trans *trans)
 static u16 iwl_pciexp_link_ctrl(struct iwl_trans *trans)
 {
        struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-       int pos;
        u16 pci_lnk_ctl;
 
-       struct pci_dev *pci_dev = trans_pcie->pci_dev;
-
-       pos = pci_pcie_cap(pci_dev);
-       pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl);
+       pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL,
+                                 &pci_lnk_ctl);
        return pci_lnk_ctl;
 }