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From: mouse@mcgill-vision.UUCP (der Mouse)
Newsgroups: comp.bugs.4bsd
Subject: DEUNA goes catatonic: 4.3bsd
Message-ID: <601@mcgill-vision.UUCP>
Date: Mon, 19-Jan-87 16:39:35 EST
Article-I.D.: mcgill-v.601
Posted: Mon Jan 19 16:39:35 1987
Date-Received: Thu, 22-Jan-87 03:46:52 EST
Organization: McGill University, Montreal
Lines: 47

Index:	sys/vaxif/if_de.c 4.3bsd

Description:
	It is possible for the DEUNA driver to make the card go
	catatonic (ie, no response at all - as if everyone else on the
	cable suddenly disappeared).  The problem is that the driver
	will issue a reset (RSET) command to the card but not wait for
	it to finish.

	This is actually on Mt. Xinu's 4.3+NFS, but I assume the bug is
	present in vanilla 4.3, because I figure Mt. Xinu is more
	likely to fix bugs than introduce bugs - particularly a bug as
	obvious (once noticed) as this.

Repeat-By:

	% ifconfig de0 down; ifconfig de0 up

	It is crucial that the ifconfig up runs very soon after the
	ifconfig down.

	Do this only if you can reboot the machine, because that's the
	only way I know of to fix it once you've made it go dead.

Fix:
	(your line numbers will almost certainly vary; we have more
	 than just this fix in the driver.)

*** sys/vaxif/if_de.c	Mon Jan 19 16:20:08 1987
--- original/vaxif/if_de.c	Thu Nov 20 23:29:27 1986
***************
*** 777,783 ****
  		    ds->ds_flags & DSF_RUNNING) {
  			((struct dedevice *)
  			   (deinfo[ifp->if_unit]->ui_addr))->pclow = PCSR0_RSET;
- 			dewait(deinfo[ifp->if_unit],"reset");
  			ds->ds_flags &= ~(DSF_LOCK | DSF_RUNNING);
  		} else if (ifp->if_flags & IFF_UP &&
  		    (ds->ds_flags & DSF_RUNNING) == 0)
--- 752,757 ----

					der Mouse

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