[PATCH] ath9k: don't trigger spectral scan when not enabled

Doing so enables the FFT generation without prior
configuration, leading to an IRQ storm caused by
invalid (or at least unwanted) PHY errors.

Signed-off-by: Zefir Kurtisi <redacted>
---
 drivers/net/wireless/ath/ath9k/common-spectral.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/ath/ath9k/common-spectral.c b/drivers/net/wireless/ath/ath9k/common-spectral.c
index 58f1ed1..51b618c 100644
--- a/drivers/net/wireless/ath/ath9k/common-spectral.c
+++ b/drivers/net/wireless/ath/ath9k/common-spectral.c

@@ -739,6 +739,9 @@ void ath9k_cmn_spectral_scan_trigger(struct ath_common *common,
 		return;
 	}
 
+	if (!spec_priv->spec_config.enabled)
+		return;
+
 	ath_ps_ops(common)->wakeup(common);
 	rxfilter = ath9k_hw_getrxfilter(ah);
 	ath9k_hw_setrxfilter(ah, rxfilter |

-- 
2.7.4