Re: mec and resets

[email protected] wrote:

> I crashed the machine in my first 'scp' attempt.
> The good thing is that it doesn't reboot, it just freezes, so at  
> least we know that the watchdog was causing the reboot.

How about this one more change? (what Linux driver does)

---
Index: if_mec.c
===================================================================
RCS file: /cvsroot/src/sys/arch/sgimips/mace/if_mec.c,v
retrieving revision 1.20
diff -u -r1.20 if_mec.c
--- if_mec.c	14 May 2008 13:29:28 -0000	1.20
+++ if_mec.c	4 Aug 2008 13:51:14 -0000
@@ -836,7 +837,8 @@
 			break;
 		m = NULL;
 
-		if (sc->sc_txpending == MEC_NTXDESC) {
+		if (sc->sc_txpending == MEC_NTXDESC - 1) {
+			/* preserve the last entry to avoid wraparound */
 			break;
 		}
 

---
Izumi Tsutsui