[patch 77/88] ath9k: AR9280 PCI devices must serialize IO as well

[Greg KH]

2.6.28-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>

This is a port of:
commit SHA1 5ec905a8df3fa877566ba98298433fbfb3d688cc
for 2.6.28

Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
 drivers/net/wireless/ath9k/hw.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -3311,7 +3311,8 @@ static struct ath_hal *ath9k_hw_do_attac
 	}
 
 	if (ah->ah_config.serialize_regmode == SER_REG_MODE_AUTO) {
-		if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI) {
+		if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI ||
+		    (AR_SREV_9280(ah) && !ah->ah_isPciExpress)) {
 			ah->ah_config.serialize_regmode =
 				SER_REG_MODE_ON;
 		} else {


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