mISDN: Bugfix for layer2 fixed TEI mode

If a fixed TEI is used, the initial state of the layer 2 statmachine need to be
4 (TEI assigned). This was true only for Point to Point connections, but not
for the other fixed TEIs. It was not found before, because usually only the
TEI 0 is used as fixed TEI for PtP mode, but if you try X31 packet mode
connections with SAPI 16, TEI 1, it did fail.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
Cc: <stable@vger.kernel.org> # 3.5.x
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/isdn/mISDN/layer2.c b/drivers/isdn/mISDN/layer2.c
index 0dc8abc..949cabb 100644 (file)
--- a/drivers/isdn/mISDN/layer2.c
+++ b/drivers/isdn/mISDN/layer2.c
@@ -2222,7 +2222,7 @@ create_l2(struct mISDNchannel *ch, u_int protocol, u_long options, int tei,
        InitWin(l2);
        l2->l2m.fsm = &l2fsm;
        if (test_bit(FLG_LAPB, &l2->flag) ||
-           test_bit(FLG_PTP, &l2->flag) ||
+           test_bit(FLG_FIXED_TEI, &l2->flag) ||
            test_bit(FLG_LAPD_NET, &l2->flag))
                l2->l2m.state = ST_L2_4;
        else