--- kcapi.c.orig	2003-05-13 17:19:36.000000000 +0200
+++ kcapi.c	2003-05-13 17:19:46.000000000 +0200
@@ -73,7 +73,7 @@
 struct capi_appl {
 	__u16 applid;
 	capi_register_params rparam;
-	int releasing;
+	atomic_t releasing;
 	void *param;
 	void (*signal) (__u16 applid, void *param);
 	struct sk_buff_head recv_queue;
@@ -705,8 +705,7 @@
 			nextpp = &(*pp)->next;
 		}
 	}
-	APPL(appl)->releasing--;
-	if (APPL(appl)->releasing <= 0) {
+	if (atomic_dec_and_test(&APPL(appl)->releasing)) {
 		APPL(appl)->signal = 0;
 		APPL_MARK_FREE(appl);
 		printk(KERN_INFO "kcapi: appl %d down\n", appl);
@@ -793,6 +792,12 @@
 			kfree_skb(skb);
 			continue;
 		}
+	        if (atomic_read(&APPL(appl)->releasing)) {
+			printk(KERN_ERR "kcapi: recv_handler: applid %d is releasing\n",
+				appl);
+			kfree_skb(skb);
+			continue;
+		}
 		if (APPL(appl)->signal == 0) {
 			printk(KERN_ERR "kcapi: recv_handler: applid %d has no signal function\n",
 			       appl);
@@ -869,7 +874,7 @@
 
 	for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
 		if (!VALID_APPLID(appl)) continue;
-		if (APPL(appl)->releasing) continue;
+		if (atomic_read(&APPL(appl)->releasing)) continue;
 		card->driver->register_appl(card, appl, &APPL(appl)->rparam);
 	}
 
@@ -1117,6 +1122,7 @@
 	APPL_MARK_USED(appl);
 	skb_queue_head_init(&APPL(appl)->recv_queue);
 	APPL(appl)->nncci = 0;
+	atomic_set(&APPL(appl)->releasing,0);
 
 	memcpy(&APPL(appl)->rparam, rparam, sizeof(capi_register_params));
 
@@ -1136,19 +1142,18 @@
 {
 	int i;
 
-	if (!VALID_APPLID(applid) || APPL(applid)->releasing)
+	if (!VALID_APPLID(applid) || atomic_read(&APPL(applid)->releasing))
 		return CAPI_ILLAPPNR;
-	APPL(applid)->releasing++;
+	atomic_inc(&APPL(applid)->releasing);
 	skb_queue_purge(&APPL(applid)->recv_queue);
 	for (i = 0; i < CAPI_MAXCONTR; i++) {
 		if (cards[i].cardstate != CARD_RUNNING)
 			continue;
-		APPL(applid)->releasing++;
+	        atomic_inc(&APPL(applid)->releasing);
 		cards[i].driver->release_appl(&cards[i], applid);
 	}
-	APPL(applid)->releasing--;
-	if (APPL(applid)->releasing <= 0) {
-	        APPL(applid)->signal = 0;
+	if (atomic_dec_and_test(&APPL(applid)->releasing)) {
+		APPL(applid)->signal = 0;
 		APPL_MARK_FREE(applid);
 		printk(KERN_INFO "kcapi: appl %d down\n", applid);
 	}