From 55a6af9749d6a31e087f304f2ea39db3bb7b3f3e Mon Sep 17 00:00:00 2001
From: Martin Bachem <m.bachem@gmx.de>
Date: Thu, 4 Sep 2008 12:42:39 +0200
Subject: 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 37c2e19..ea69d58 100644
--- 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);
-- 
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