mISDN: Make layer1 timer 3 value configurable

For certification test it is very useful to change the layer1
timer3 value on runtime.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/isdn/mISDN/layer1.c b/drivers/isdn/mISDN/layer1.c
index 0fc49b375514..ff0515323c86 100644
--- a/drivers/isdn/mISDN/layer1.c
+++ b/drivers/isdn/mISDN/layer1.c
@@ -30,11 +30,12 @@ struct layer1 {
         struct FsmInst l1m;
         struct FsmTimer timer;
         int delay;
+        int t3_value;
         struct dchannel *dch;
         dchannel_l1callback *dcb;
 };
 
-#define TIMER3_VALUE 7000
+#define TIMER3_DEFAULT_VALUE    7000
 
 static
 struct Fsm l1fsm_s = {NULL, 0, 0, NULL, NULL};
@@ -233,7 +234,7 @@ l1_activate_s(struct FsmInst *fi, int event, void *arg)
 {
         struct layer1 *l1 = fi->userdata;
 
-        mISDN_FsmRestartTimer(&l1->timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
+        mISDN_FsmRestartTimer(&l1->timer, l1->t3_value, EV_TIMER3, NULL, 2);
         test_and_set_bit(FLG_L1_T3RUN, &l1->Flags);
         l1->dcb(l1->dch, HW_RESET_REQ);
 }
@@ -356,6 +357,16 @@ l1_event(struct layer1 *l1, u_int event)
                 release_l1(l1);
                 break;
         default:
+                if ((event & ~HW_TIMER3_VMASK) == HW_TIMER3_VALUE) {
+                        int val = event & HW_TIMER3_VMASK;
+
+                        if (val < 5)
+                                val = 5;
+                        if (val > 30)
+                                val = 30;
+                        l1->t3_value = val;
+                        break;
+                }
                 if (*debug & DEBUG_L1)
                         printk(KERN_DEBUG "%s %x unhandled\n",
                                __func__, event);
@@ -377,6 +388,7 @@ create_l1(struct dchannel *dch, dchannel_l1callback *dcb) {
         nl1->l1m.fsm = &l1fsm_s;
         nl1->l1m.state = ST_L1_F3;
         nl1->Flags = 0;
+        nl1->t3_value = TIMER3_DEFAULT_VALUE;
         nl1->l1m.debug = *debug & DEBUG_L1_FSM;
         nl1->l1m.userdata = nl1;
         nl1->l1m.userint = 0;