ath9k: merge common ->config_pci_powersave() checks

Move common checks into wrapper function. Since ASPM can be only enabled
on PCIe devices ->is_pciexpress check is unneeded.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9002_hw.c

@@ -308,9 +308,6 @@ static void ar9002_hw_configpcipowersave(struct ath_hw *ah,
 	u8 i;
 	u32 val;
 
-	if (ah->is_pciexpress != true || ah->aspm_enabled != true)
-		return;
-
 	/* Nothing to do on restore for 11N */
 	if (!power_off /* !restore */) {
 		if (AR_SREV_9280_20_OR_LATER(ah)) {

drivers/net/wireless/ath/ath9k/ar9003_hw.c

@@ -518,9 +518,6 @@ static void ar9003_hw_init_mode_gain_regs(struct ath_hw *ah)
 static void ar9003_hw_configpcipowersave(struct ath_hw *ah,
 					 bool power_off)
 {
-	if (ah->is_pciexpress != true || ah->aspm_enabled != true)
-		return;
-
 	/* Nothing to do on restore for 11N */
 	if (!power_off /* !restore */) {
 		/* set bit 19 to allow forcing of pcie core into L1 state */

drivers/net/wireless/ath/ath9k/hw-ops.h

@@ -24,6 +24,9 @@
 static inline void ath9k_hw_configpcipowersave(struct ath_hw *ah,
 					       bool power_off)
 {
+	if (ah->aspm_enabled != true)
+		return;
+
 	ath9k_hw_ops(ah)->config_pci_powersave(ah, power_off);
 }