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-rw-r--r--package/kernel/mac80211/patches/303-ath9k-DFS-consider-ext_channel-pulses-only-in-HT40-m.patch25
1 files changed, 25 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/303-ath9k-DFS-consider-ext_channel-pulses-only-in-HT40-m.patch b/package/kernel/mac80211/patches/303-ath9k-DFS-consider-ext_channel-pulses-only-in-HT40-m.patch
new file mode 100644
index 0000000000..07f5e3bc36
--- /dev/null
+++ b/package/kernel/mac80211/patches/303-ath9k-DFS-consider-ext_channel-pulses-only-in-HT40-m.patch
@@ -0,0 +1,25 @@
+From: Zefir Kurtisi <zefir.kurtisi@neratec.com>
+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 <zefir.kurtisi@neratec.com>
+---
+
+--- 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
+ 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);
+ }