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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 <poh@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Peter Oh 2015-03-04 15:43:46 +02:00 committed by Kalle Valo
parent 2c3f26a065
commit dab74cde38
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/ath/dfs_pri_detector.c
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@ -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);