iwlwifi: remove set_pwr_src operation

The set_pwr_src operation is only ever used from
within the same sub-driver that it is declared
in, so it can just be called directly instead of
being an operation. Also, it is never called to
set the power source to V_aux, so change the two
functions accordingly (but keep the V_aux code
for documentation purposes in a comment).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index ff5f2fc..0ad0d44 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -685,6 +685,23 @@
 	return 0;
 }
 
+static void iwlagn_set_pwr_vmain(struct iwl_priv *priv)
+{
+/*
+ * (for documentation purposes)
+ * to set power to V_AUX, do:
+
+		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);
+ */
+
+	iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+			       APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+			       ~APMG_PS_CTRL_MSK_PWR_SRC);
+}
+
 int iwlagn_hw_nic_init(struct iwl_priv *priv)
 {
 	unsigned long flags;
@@ -700,7 +717,7 @@
 
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
+	iwlagn_set_pwr_vmain(priv);
 
 	priv->cfg->ops->lib->apm_ops.config(priv);