mISDN: Fix kernel crash when doing hardware conference with more than two members

Fix kernel crash when doing hardware conference with more than two members.
Removed DTMF threshold notice when debugging is disabled.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>

drivers/isdn/mISDN/dsp_cmx.c

@@ -927,10 +927,6 @@ dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp)
 
 	/* for more than two members.. */
 
-	/* in case of hdlc, we change to software */
-	if (dsp->hdlc)
-		goto conf_software;
-
 	/* if all members already have the same conference */
 	if (all_conf)
 		return;
@@ -941,6 +937,9 @@ dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp)
 	if (current_conf >= 0) {
 join_members:
 		list_for_each_entry(member, &conf->mlist, list) {
+			/* in case of hdlc, change to software */
+			if (member->dsp->hdlc)
+				goto conf_software;
 			/* join to current conference */
 			if (member->dsp->hfc_conf == current_conf)
 				continue;

drivers/isdn/mISDN/dsp_core.c

@@ -301,6 +301,7 @@ dsp_control_req(struct dsp *dsp, struct mISDNhead *hh, struct sk_buff *skb)
 		if (dsp_debug & DEBUG_DSP_CORE)
 			printk(KERN_DEBUG "%s: start dtmf\n", __func__);
 		if (len == sizeof(int)) {
+			if (dsp_debug & DEBUG_DSP_CORE)
 				printk(KERN_NOTICE "changing DTMF Threshold "
 					"to %d\n", *((int *)data));
 			dsp->dtmf.treshold = (*(int *)data) * 10000;