From: Oleksij Rempel <linux@rempel-privat.de>
Date: Sun, 22 Mar 2015 19:29:55 +0100
Subject: [PATCH] ath9k: write buffer related optimisation in
 ar5008_hw_set_channel_regs

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

--- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c
@@ -681,12 +681,13 @@ static void ar5008_hw_set_channel_regs(s
 			phymode |= AR_PHY_FC_DYN2040_PRI_CH;
 
 	}
+	ENABLE_REGWRITE_BUFFER(ah);
 	REG_WRITE(ah, AR_PHY_TURBO, phymode);
 
+	/* This function do only REG_WRITE, so
+	 * we can include it to REGWRITE_BUFFER. */
 	ath9k_hw_set11nmac2040(ah, chan);
 
-	ENABLE_REGWRITE_BUFFER(ah);
-
 	REG_WRITE(ah, AR_GTXTO, 25 << AR_GTXTO_TIMEOUT_LIMIT_S);
 	REG_WRITE(ah, AR_CST, 0xF << AR_CST_TIMEOUT_LIMIT_S);