kern/38763: "hanging in tty" bugfix breaks the build for vax (and probably others)

[rosenfeld%grumpf.hope-2000.org@localhost]

>Number:         38763
>Category:       kern
>Synopsis:       "hanging in tty" bugfix breaks the build for vax (and probably 
>others)
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 26 21:10:00 +0000 2008
>Originator:     rosenfeld%grumpf.hope-2000.org@localhost
>Release:        NetBSD 4.99.63
>Organization:
>Environment:
System: NetBSD cheetah.headcrashers.bnfh 4.99.63 NetBSD 4.99.63 (GENERIC) #0: 
Sun May 25 22:00:14 CEST 2008 
woodstoc@executor:/usr/vax/src/sys/arch/vax/compile/obj.vax/GENERIC vax
Architecture: vax
Machine: vax
>Description:

See http://mail-index.netbsd.org/source-changes/2008/05/25/msg195531.html
for the "hanging in tty" bugfix.

clwakeup() has been removed from src/sys/kern/tty_subr.c, but is still
called by some tty drivers, of which src/sys/dev/dec/dz.c breaks my vax
build.

Affected filed are arch/x68k/dev/com.c, dev/dec/dz.c, dev/qbus/dl.c and
dev/qbus/dhu.c.


>How-To-Repeat:
Try to build a vax kernel using dz.

>Fix:
Greg Oster suggested using cv_broadcast() as in src/sys/kern/tty.c