mISDN: Return error on E-channel access

Return error on D-channel access with E-channel data requested

Signed-off-by: Martin Bachem <m.bachem@gmx.de>
Signed-off-by: Karsten Keil <kkeil@suse.de>

diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 37c2e19c3b008801cc390d8d25076761ecd27303..ea69d5862f6dc9168506fd11fb3c8e175077add9 100644 (file)
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -1894,6 +1894,10 @@ open_dchannel(struct hfc_pci *hc, struct mISDNchannel *ch,
                    hc->dch.dev.id, __builtin_return_address(0));
        if (rq->protocol == ISDN_P_NONE)
                return -EINVAL;
+       if (rq->adr.channel == 1) {
+               /* TODO: E-Channel */
+               return -EINVAL;
+       }
        if (!hc->initdone) {
                if (rq->protocol == ISDN_P_TE_S0) {
                        err = create_l1(&hc->dch, hfc_l1callback);