Index: madwifi-trunk-r3776/net80211/ieee80211_crypto_ccmp.c
===================================================================
--- madwifi-trunk-r3776.orig/net80211/ieee80211_crypto_ccmp.c	2008-07-17 00:21:29.000000000 +0200
+++ madwifi-trunk-r3776/net80211/ieee80211_crypto_ccmp.c	2008-07-17 00:49:59.000000000 +0200
@@ -478,6 +478,9 @@
 	uint8_t *mic, *pos;
 	u_int space;
 
+	if (ctx->cc_tfm == NULL)
+		return 0;
+
 	ctx->cc_vap->iv_stats.is_crypto_ccmp++;
 
 	skb = skb0;
@@ -592,6 +595,9 @@
 	uint8_t *pos, *mic;
 	u_int space;
 
+	if (ctx->cc_tfm == NULL)
+		return 0;
+
 	ctx->cc_vap->iv_stats.is_crypto_ccmp++;
 
 	skb = skb0;