ath5k: don't enable probe request rx for STAs

AR5K_RX_FILTER_PROBEREQ enables reception of probe requests,
but the filter flag FIF_BCN_PRBRESP_PROMISC is actually about
receiving beacons and probe _responses_, so we shouldn't
turn on the filter when scanning.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/base.c

@@ -3227,9 +3227,9 @@ static void ath5k_configure_filter(struct ieee80211_hw *hw,
 		rfilt |= AR5K_RX_FILTER_PHYERR;
 
 	/* FIF_BCN_PRBRESP_PROMISC really means to enable beacons
-	* and probes for any BSSID, this needs testing */
+	* and probes for any BSSID */
 	if (*new_flags & FIF_BCN_PRBRESP_PROMISC)
-		rfilt |= AR5K_RX_FILTER_BEACON | AR5K_RX_FILTER_PROBEREQ;
+		rfilt |= AR5K_RX_FILTER_BEACON;
 
 	/* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not
 	 * set we should only pass on control frames for this