ath9k: Fix phyerr debug statistics

Validate the phyerr value against the max. size of the
statistics array properly.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 5a838fc28b6..228c18189a3 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -987,8 +987,6 @@ void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
 #define RX_SAMP_DBG(c) (sc->debug.bb_mac_samp[sc->debug.sampidx].rs\
                         [sc->debug.rsidx].c)
 
-        u32 phyerr;
-
         RX_STAT_INC(rx_pkts_all);
         sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen;
 
@@ -1007,8 +1005,8 @@ void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
 
         if (rs->rs_status & ATH9K_RXERR_PHY) {
                 RX_STAT_INC(phy_err);
-                phyerr = rs->rs_phyerr & 0x24;
-                RX_PHY_ERR_INC(phyerr);
+                if (rs->rs_phyerr < ATH9K_PHYERR_MAX)
+                        RX_PHY_ERR_INC(rs->rs_phyerr);
         }
 
         sc->debug.stats.rxstats.rs_rssi_ctl0 = rs->rs_rssi_ctl0;