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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 <zefir.kurtisi@neratec.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Zefir Kurtisi 2015-06-16 11:46:42 +02:00 committed by Kalle Valo
parent 00798c38f4
commit 8f010d9ca8
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/ath/ath9k/dfs.c
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@ -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);
}