diff --git a/[refs] b/[refs]
index b5538097d722..7a2ca1118e3e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a22fe108e62367c10c3abeb469d6972ba3299f5
+refs/heads/master: 20b3efd979c0d5d9fdf497a98668a806266a63e4
diff --git a/trunk/drivers/net/wireless/ath/ath9k/hw.h b/trunk/drivers/net/wireless/ath/ath9k/hw.h
index 7ce5420966a4..8158e8e6a53d 100644
--- a/trunk/drivers/net/wireless/ath/ath9k/hw.h
+++ b/trunk/drivers/net/wireless/ath/ath9k/hw.h
@@ -68,6 +68,24 @@
 #define REG_READ(_ah, _reg) \
 	ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
 
+#define ENABLE_REGWRITE_BUFFER(_ah)					\
+	do {								\
+		if (AR_SREV_9271(_ah))					\
+			ath9k_hw_common(_ah)->ops->enable_write_buffer((_ah)); \
+	} while (0)
+
+#define DISABLE_REGWRITE_BUFFER(_ah)					\
+	do {								\
+		if (AR_SREV_9271(_ah))					\
+			ath9k_hw_common(_ah)->ops->disable_write_buffer((_ah)); \
+	} while (0)
+
+#define REGWRITE_BUFFER_FLUSH(_ah)					\
+	do {								\
+		if (AR_SREV_9271(_ah))					\
+			ath9k_hw_common(_ah)->ops->write_flush((_ah));	\
+	} while (0)
+
 #define SM(_v, _f)  (((_v) << _f##_S) & _f)
 #define MS(_v, _f)  (((_v) & _f) >> _f##_S)
 #define REG_RMW(_a, _r, _set, _clr)    \