Index: zaptel.c
===================================================================
RCS file: /usr/cvsroot/zaptel/zaptel.c,v
retrieving revision 1.98
diff -u -r1.98 zaptel.c
--- zaptel.c	4 Nov 2004 20:04:53 -0000	1.98
+++ zaptel.c	11 Jan 2005 17:19:13 -0000
@@ -4089,19 +4089,21 @@
 		rv = 0;
 		break;
 	case ZT_HOOK:
+		get_user(j,(int *)data);
 		if (chan->flags & ZT_FLAG_CLEAR)
 			return -EINVAL;
 		if (chan->sig == ZT_SIG_CAS) 
 			return -EINVAL;
 		/* if no span, just do nothing */
 		if (!chan->span) return(0);
+		spin_lock_irqsave(&chan->lock, flags);
 		/* if dialing, stop it */
 		chan->curtone = NULL;
 		chan->dialing = 0;
 		chan->txdialbuf[0] = '\0';
 		chan->tonep = 0;
 		chan->pdialcount = 0;
-		get_user(j,(int *)data);
+		spin_unlock_irqrestore(&chan->lock, flags);
 		if (chan->span->flags & ZT_FLAG_RBS) {
 			switch (j) {
 			case ZT_ONHOOK: