more sysmon initialisation problems.

[matthew green <mrg%eterna.com.au@localhost>]

i'm using the patch below to get my system to boot.  otherwise the
mutex_enter() immediately after the additional return triggers an
uninit lock.  this is the same problem as the other case handled,
but i got a crash while trying to hack around that and went with
the below as a workaround.

the stack trace is:

mutex_enter()
sysmon_wdog_register()
lpcibattach()
config_attach_loc()
pci_probe_device()

this is an old (2003-era) i386 laptop.


.mrg.


Index: dev/sysmon/sysmon_wdog.c
===================================================================
RCS file: /cvsroot/src/sys/dev/sysmon/sysmon_wdog.c,v
retrieving revision 1.26
diff -p -u -r1.26 sysmon_wdog.c
--- dev/sysmon/sysmon_wdog.c	23 Apr 2015 23:22:03 -0000	1.26
+++ dev/sysmon/sysmon_wdog.c	25 Apr 2015 20:40:18 -0000
@@ -312,6 +312,8 @@ sysmon_wdog_register(struct sysmon_wdog 
 	struct sysmon_wdog *lsmw;
 	int error = 0;
 
+	return EIO;
+
 	mutex_enter(&sysmon_wdog_list_mtx);
 
 	LIST_FOREACH(lsmw, &sysmon_wdog_list, smw_list) {