1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 019dbe9b082c..917bf41a293b 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -1937,6 +1937,11 @@ open_dchannel(struct hfc_pci *hc, struct mISDNchannel *ch,
                 if (rq->protocol != ch->protocol) {
                         if (hc->hw.protocol == ISDN_P_TE_S0)
                                 l1_event(hc->dch.l1, CLOSE_CHANNEL);
+                        if (rq->protocol == ISDN_P_TE_S0) {
+                                err = create_l1(&hc->dch, hfc_l1callback);
+                                if (err)
+                                        return err;
+                        }
                         hc->hw.protocol = rq->protocol;
                         ch->protocol = rq->protocol;
                         hfcpci_setmode(hc);