From dab74cde38dab36cad20caa8aba26cc0e244dbb5 Mon Sep 17 00:00:00 2001 From: Peter Oh Date: Wed, 4 Mar 2015 15:43:46 +0200 Subject: ath: enhance radar detection by looking up chirp Certain radar types such as FCC radar type 5 are using chirp in their pulses, hence looking up the chirp status will enhance to avoid false radar detection. Signed-off-by: Peter Oh Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/dfs_pri_detector.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/dfs_pri_detector.c b/drivers/net/wireless/ath/dfs_pri_detector.c index 43b608178884..1b5ad1965607 100644 --- a/drivers/net/wireless/ath/dfs_pri_detector.c +++ b/drivers/net/wireless/ath/dfs_pri_detector.c @@ -390,6 +390,10 @@ static struct pri_sequence *pri_detector_add_pulse(struct pri_detector *de, if ((ts - de->last_ts) < rs->max_pri_tolerance) /* if delta to last pulse is too short, don't use this pulse */ return NULL; + /* radar detector spec needs chirp, but not detected */ + if (rs->chirp && rs->chirp != event->chirp) + return NULL; + de->last_ts = ts; max_updated_seq = pseq_handler_add_to_existing_seqs(de, ts); -- cgit v1.2.3