ath9k: fix WEP connection issues

SVN-Revision: 30009

package/mac80211/patches/568-ath9k_fix_wep.patch

@@ -0,0 +1,17 @@
+--- a/drivers/net/wireless/ath/ath9k/recv.c
++++ b/drivers/net/wireless/ath/ath9k/recv.c
+@@ -823,6 +823,14 @@ static bool ath9k_rx_accept(struct ath_c
+ 		(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_CRC | ATH9K_RXERR_MIC |
+ 		 ATH9K_RXERR_KEYMISS));
+ 
++	/*
++	 * Key miss events are only relevant for pairwise keys where the
++	 * descriptor does contain a valid key index. This has been observed
++	 * mostly with CCMP encryption.
++	 */
++	if (rx_stats->rs_keyix == ATH9K_RXKEYIX_INVALID)
++		rx_stats->rs_status &= ~ATH9K_RXERR_KEYMISS;
++
+ 	if (!rx_stats->rs_datalen)
+ 		return false;
+         /*