Performing spectral scans on 5 GHz channels may result in PHY errors sent by the hardware, even if DFS support is not enabled in the driver (e.g. channel scanning or passive monitoring). In that case channels may falsely get marked as 'unusable'. To fix that, only process radar PHY errors when radar is explicitly enabled in the driver.
Cc: Stable <[email protected]> [v3.10+] Reported-by: Mathias Kretschmer <[email protected]> Signed-off-by: Simon Wunderlich <[email protected]> --- drivers/net/wireless/ath/ath9k/dfs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/dfs.c b/drivers/net/wireless/ath/ath9k/dfs.c index 726271c..3d04905 100644 --- a/drivers/net/wireless/ath/ath9k/dfs.c +++ b/drivers/net/wireless/ath/ath9k/dfs.c @@ -152,6 +152,12 @@ void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data, return; } + if (!sc->hw->conf.radar_enabled) { + ath_dbg(common, DFS, + "Error: received radar phyerr while radar was disabled\n"); + return; + } + datalen = rs->rs_datalen; if (datalen == 0) { DFS_STAT_INC(sc, datalen_discards); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
