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path: root/drivers/isdn/mISDN/dsp_cmx.c
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Diffstat (limited to 'drivers/isdn/mISDN/dsp_cmx.c')
-rw-r--r--drivers/isdn/mISDN/dsp_cmx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
index d19b4f6d7d87..05866184ba23 100644
--- a/drivers/isdn/mISDN/dsp_cmx.c
+++ b/drivers/isdn/mISDN/dsp_cmx.c
@@ -947,6 +947,10 @@ conf_software:
 	if (current_conf >= 0) {
 join_members:
 		list_for_each_entry(member, &conf->mlist, list) {
+			/* if no conference engine on our chip, change to
+			 * software */
+			if (!member->dsp->features.hfc_conf)
+				goto conf_software;
 			/* in case of hdlc, change to software */
 			if (member->dsp->hdlc)
 				goto conf_software;