diff --git a/[refs] b/[refs]
index d77a22960513..96ae221110b7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 64c6e50c0732b793e4bd5fd2954b7bef088f83f8
+refs/heads/master: 2b7e6bce41b6b944bd4302cf0914e2a6f4bc704b
diff --git a/trunk/drivers/net/wireless/ath/ath9k/main.c b/trunk/drivers/net/wireless/ath/ath9k/main.c
index 36f4f5afe738..4d647169439c 100644
--- a/trunk/drivers/net/wireless/ath/ath9k/main.c
+++ b/trunk/drivers/net/wireless/ath/ath9k/main.c
@@ -1196,6 +1196,10 @@ static int ath9k_start(struct ieee80211_hw *hw)
 			ath9k_btcoex_timer_resume(sc);
 	}
 
+	/* User has the option to provide pm-qos value as a module
+	 * parameter rather than using the default value of
+	 * 'ATH9K_PM_QOS_DEFAULT_VALUE'.
+	 */
 	pm_qos_update_request(&sc->pm_qos_req, ath9k_pm_qos_value);
 
 	if (ah->caps.pcie_lcr_extsync_en && common->bus_ops->extn_synch_en)