diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 1beb896..7c3d2de 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -284,11 +284,9 @@
 
 static void ath9k_hw_disablepcie(struct ath_hw *ah)
 {
-	if (AR_SREV_9100(ah))
+	if (!AR_SREV_5416(ah))
 		return;
 
-	ENABLE_REGWRITE_BUFFER(ah);
-
 	REG_WRITE(ah, AR_PCIE_SERDES, 0x9248fc00);
 	REG_WRITE(ah, AR_PCIE_SERDES, 0x24924924);
 	REG_WRITE(ah, AR_PCIE_SERDES, 0x28000029);
@@ -300,8 +298,6 @@
 	REG_WRITE(ah, AR_PCIE_SERDES, 0x000e1007);
 
 	REG_WRITE(ah, AR_PCIE_SERDES2, 0x00000000);
-
-	REGWRITE_BUFFER_FLUSH(ah);
 }
 
 /* This should work for all families including legacy */