[PATCH] ath9k_hw: set pci_express capability true for AR9480

[Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>]

From: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>

the AR_SREV register does not seems to indicate whether AR9480 is
pci_express capable or not though the other information like macVersion
etc can be obtained properly. this fix is essential as ASPM won't be intialized
and its related driver functionality ath9k_hw_configpcipowersave won't be
called

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath9k/hw.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f2de7ee..56ba6a8 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -284,7 +284,12 @@ static void ath9k_hw_read_revisions(struct ath_hw *ah)
 		ah->hw_version.macVersion =
 			(val & AR_SREV_VERSION2) >> AR_SREV_TYPE2_S;
 		ah->hw_version.macRev = MS(val, AR_SREV_REVISION2);
-		ah->is_pciexpress = (val & AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
+
+		if (AR_SREV_9480(ah))
+			ah->is_pciexpress = true;
+		else
+			ah->is_pciexpress = (val &
+					     AR_SREV_TYPE2_HOST_MODE) ? 0 : 1;
 	} else {
 		if (!AR_SREV_9100(ah))
 			ah->hw_version.macVersion = MS(val, AR_SREV_VERSION);
-- 
1.7.0.4