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[3/3] ath: Enhance radar detection by looking up chirp

Message ID 1423775825-19498-3-git-send-email-poh@qca.qualcomm.com (mailing list archive)
State Not Applicable
Delegated to: Kalle Valo
Headers show

Commit Message

Peter Oh Feb. 12, 2015, 9:17 p.m. UTC 
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>
---
 drivers/net/wireless/ath/dfs_pri_detector.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/net/wireless/ath/dfs_pri_detector.c b/drivers/net/wireless/ath/dfs_pri_detector.c
index 43b6081..1b5ad19 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);