mISDN: Support DR6 indication in mISDNipac driver

According to figure 39 in PEB3086 data sheet, version 1.4 this indication
replaces DR when layer 1 transition source state is F6.

This fixes mISDN layer 1 getting stuck in F6 state in TE mode on
Dialogic Diva 2.02 card (and possibly others) when NT deactivates it.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Acked-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/isdn/hardware/mISDN/ipac.h b/drivers/isdn/hardware/mISDN/ipac.h
index 76aa6f8..720ee72 100644 (file)
--- a/drivers/isdn/hardware/mISDN/ipac.h
+++ b/drivers/isdn/hardware/mISDN/ipac.h
@@ -217,6 +217,7 @@ struct ipac_hw {
 #define ISAC_IND_SD            0x2
 #define ISAC_IND_DIS           0x3
 #define ISAC_IND_RSY           0x4
+#define ISAC_IND_DR6           0x5
 #define ISAC_IND_EI            0x6
 #define ISAC_IND_PU            0x7
 #define ISAC_IND_ARD           0x8

diff --git a/drivers/isdn/hardware/mISDN/mISDNipac.c b/drivers/isdn/hardware/mISDN/mISDNipac.c
index cb428b9..aa9b6c3 100644 (file)
--- a/drivers/isdn/hardware/mISDN/mISDNipac.c
+++ b/drivers/isdn/hardware/mISDN/mISDNipac.c
@@ -80,6 +80,7 @@ isac_ph_state_bh(struct dchannel *dch)
                l1_event(dch->l1, HW_DEACT_CNF);
                break;
        case ISAC_IND_DR:
+       case ISAC_IND_DR6:
                dch->state = 3;
                l1_event(dch->l1, HW_DEACT_IND);
                break;
@@ -660,6 +661,7 @@ isac_l1cmd(struct dchannel *dch, u32 cmd)
                spin_lock_irqsave(isac->hwlock, flags);
                if ((isac->state == ISAC_IND_EI) ||
                    (isac->state == ISAC_IND_DR) ||
+                   (isac->state == ISAC_IND_DR6) ||
                    (isac->state == ISAC_IND_RS))
                        ph_command(isac, ISAC_CMD_TIM);
                else