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From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 11 Jul 2016 12:07:40 +0200
Subject: [PATCH] ath9k_hw: set spectral scan enable bit on trigger for
 AR9003+

AR9002 code and QCA AR9003+ code do the same.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -1800,6 +1800,8 @@ static void ar9003_hw_spectral_scan_conf
 
 static void ar9003_hw_spectral_scan_trigger(struct ath_hw *ah)
 {
+	REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
+		    AR_PHY_SPECTRAL_SCAN_ENABLE);
 	/* Activate spectral scan */
 	REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
 		    AR_PHY_SPECTRAL_SCAN_ACTIVE);