iwlwifi: use pci registers defined in pci_regs.h

This patch replaces where possible usage of pci register
defined in the driver by ones defined in pci_regs.h

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 11 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index cb6db4525dc3..d2df4945ca6a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -905,22 +905,18 @@ u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
 
 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 {
-        int rc;
+        int ret;
         unsigned long flags;
 
         spin_lock_irqsave(&priv->lock, flags);
-        rc = iwl_grab_nic_access(priv);
-        if (rc) {
+        ret = iwl_grab_nic_access(priv);
+        if (ret) {
                 spin_unlock_irqrestore(&priv->lock, flags);
-                return rc;
+                return ret;
         }
 
         if (src == IWL_PWR_SRC_VAUX) {
-                u32 val;
-
-                rc = pci_read_config_dword(priv->pci_dev,
-                                PCI_POWER_SOURCE, &val);
-                if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) {
+                if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
@@ -929,8 +925,9 @@ static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
                         iwl_poll_bit(priv, CSR_GPIO_IN,
                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
-                } else
+                } else {
                         iwl_release_nic_access(priv);
+                }
         } else {
                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
                                 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
@@ -942,7 +939,7 @@ static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
         }
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        return rc;
+        return ret;
 }
 
 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)