From 8f010d9ca88f9023650b2e54b74c84ab63a19d02 Mon Sep 17 00:00:00 2001 From: Zefir Kurtisi Date: Tue, 16 Jun 2015 11:46:42 +0200 Subject: [PATCH] ath9k: DFS - consider ext_channel pulses only in HT40 mode The chip reports radar pulses on extension channel even if operating in HT20 mode. This patch adds a sanity check for HT40 mode before it feeds pulses on extension channel to the pattern detector. Signed-off-by: Zefir Kurtisi Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath9k/dfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/dfs.c b/drivers/net/wireless/ath/ath9k/dfs.c index e98a9ea..5025a4e 100644 --- a/drivers/net/wireless/ath/ath9k/dfs.c +++ b/drivers/net/wireless/ath/ath9k/dfs.c @@ -198,7 +198,8 @@ void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data, sc->dfs_prev_pulse_ts = pe.ts; if (ard.pulse_bw_info & PRI_CH_RADAR_FOUND) ath9k_dfs_process_radar_pulse(sc, &pe); - if (ard.pulse_bw_info & EXT_CH_RADAR_FOUND) { + if (IS_CHAN_HT40(ah->curchan) && + ard.pulse_bw_info & EXT_CH_RADAR_FOUND) { pe.freq += IS_CHAN_HT40PLUS(ah->curchan) ? 20 : -20; ath9k_dfs_process_radar_pulse(sc, &pe); } -- 2.7.4