[src/trunk]: src/sys/dev On a forcefull detach wait for spkr to close as the ...

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9ff2b5446f0b
branches:  trunk
changeset: 354854:9ff2b5446f0b
user:      nat <nat%NetBSD.org@localhost>
date:      Sat Jul 01 23:27:17 2017 +0000

description:
On a forcefull detach wait for spkr to close as the detach has to
succeed.

Ok christos@.

diffstat:

 sys/dev/spkr.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 399f1a5d59d0 -r 9ff2b5446f0b sys/dev/spkr.c
--- a/sys/dev/spkr.c    Sat Jul 01 23:12:08 2017 +0000
+++ b/sys/dev/spkr.c    Sat Jul 01 23:27:17 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: spkr.c,v 1.13 2017/06/14 06:55:37 nat Exp $    */
+/*     $NetBSD: spkr.c,v 1.14 2017/07/01 23:27:17 nat Exp $    */
 
 /*
  * Copyright (c) 1990 Eric S. Raymond (esr%snark.thyrsus.com@localhost)
@@ -43,7 +43,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: spkr.c,v 1.13 2017/06/14 06:55:37 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: spkr.c,v 1.14 2017/07/01 23:27:17 nat Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "wsmux.h"
@@ -388,6 +388,10 @@
 #endif /* SPKRDEBUG */
        if (sc == NULL)
                return ENXIO;
+
+       /* XXXNS If speaker never closes, we cannot complete the detach. */
+       while ((flags & DETACH_FORCE) != 0 && sc->sc_inbuf != NULL)
+               kpause("spkrwait", TRUE, 1, NULL);
        if (sc->sc_inbuf != NULL)
                return EBUSY;