[PATCH 2.4 IrDA] IrLMP timer race fix

[Jean Tourrilhes]

	Hi Marcelo,

	This fixes a race condition. Race conditions are bad.
	Please apply ;-)

	Jean

ir241_lmp_timer_race-2.diff :
---------------------------
	o [CORRECT] Start timer before sending event to fix race condition
	o [FEATURE] Improve the IrLMP event debugging messages.

diff -u -p linux/net/irda/irlmp_event.d3.c linux/net/irda/irlmp_event.c
--- linux/net/irda/irlmp_event.d3.c	Thu Sep 12 11:47:45 2002
+++ linux/net/irda/irlmp_event.c	Thu Sep 12 11:54:22 2002
@@ -515,10 +515,10 @@ static int irlmp_state_disconnected(stru
 
 		irlmp_next_lsap_state(self, LSAP_SETUP_PEND);
 
-		irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
-
 		/* Start watchdog timer (5 secs for now) */
 		irlmp_start_watchdog_timer(self, 5*HZ);
+
+		irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
 		break;
 	case LM_CONNECT_INDICATION:
 		if (self->conn_skb) {
@@ -529,8 +529,6 @@ static int irlmp_state_disconnected(stru
 
 		irlmp_next_lsap_state(self, LSAP_CONNECT_PEND);
 
-		irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
-
 		/* Start watchdog timer
 		 * This is not mentionned in the spec, but there is a rare
 		 * race condition that can get the socket stuck.
@@ -543,10 +541,12 @@ static int irlmp_state_disconnected(stru
 		 * a backup plan. 1 second is plenty (should be immediate).
 		 * Jean II */
 		irlmp_start_watchdog_timer(self, 1*HZ);
+
+		irlmp_do_lap_event(self->lap, LM_LAP_CONNECT_REQUEST, NULL);
 		break;
 	default:
-		IRDA_DEBUG(2, "%s(), Unknown event %s\n", 
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(1, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
   			dev_kfree_skb(skb);
 		break;
@@ -604,8 +604,8 @@ static int irlmp_state_connect(struct ls
 		irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
 		break;
 	default:
-		IRDA_DEBUG(0, "%s(), Unknown event %s\n",
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
  			dev_kfree_skb(skb);
 		break;
@@ -666,8 +666,8 @@ static int irlmp_state_connect_pend(stru
 		irlmp_next_lsap_state(self, LSAP_DISCONNECTED);
 		break;
 	default:
-		IRDA_DEBUG(0, "%s() Unknown event %s\n", 
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
  			dev_kfree_skb(skb);
 		break;	
@@ -756,8 +756,8 @@ static int irlmp_state_dtr(struct lsap_c
 		irlmp_disconnect_indication(self, reason, skb);
 		break;
 	default:
-		IRDA_DEBUG(0, "%s(), Unknown event %s\n", 
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
  			dev_kfree_skb(skb);
 		break;	
@@ -829,8 +829,8 @@ static int irlmp_state_setup(struct lsap
 		irlmp_disconnect_indication(self, LM_CONNECT_FAILURE, NULL);
 		break;
 	default:
-		IRDA_DEBUG(0, "%s(), Unknown event %s\n", 
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
  			dev_kfree_skb(skb);
 		break;	
@@ -888,8 +888,8 @@ static int irlmp_state_setup_pend(struct
 		irlmp_disconnect_indication(self, reason, NULL);
 		break;
 	default:
-		IRDA_DEBUG(0, "%s(), Unknown event %s\n", 
-			 __FUNCTION__, irlmp_event[event]);
+		IRDA_DEBUG(0, "%s(), Unknown event %s on LSAP %#02x\n", 
+			   __FUNCTION__, irlmp_event[event], self->slsap_sel);
 		if (skb)
  			dev_kfree_skb(skb);
 		break;