[src/trunk]: src/sys/dev/usb drop sc_intr_lock when calling into uaudio_chan_...

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

details:   https://anonhg.NetBSD.org/src/rev/0da929e2aa76
branches:  trunk
changeset: 771645:0da929e2aa76
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sun Nov 27 04:32:41 2011 +0000

description:
drop sc_intr_lock when calling into uaudio_chan_ptransfer().

diffstat:

 sys/dev/usb/uaudio.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (31 lines):

diff -r 23ca01433159 -r 0da929e2aa76 sys/dev/usb/uaudio.c
--- a/sys/dev/usb/uaudio.c      Sun Nov 27 04:10:38 2011 +0000
+++ b/sys/dev/usb/uaudio.c      Sun Nov 27 04:32:41 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uaudio.c,v 1.122 2011/11/27 04:10:38 mrg Exp $ */
+/*     $NetBSD: uaudio.c,v 1.123 2011/11/27 04:32:41 mrg Exp $ */
 
 /*
  * Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uaudio.c,v 1.122 2011/11/27 04:10:38 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uaudio.c,v 1.123 2011/11/27 04:32:41 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -2664,10 +2664,12 @@
        ch->arg = arg;
 
        KERNEL_LOCK(1, curlwp);
+       mutex_spin_exit(&sc->sc_intr_lock);
        s = splusb();
        for (i = 0; i < UAUDIO_NCHANBUFS-1; i++) /* XXX */
                uaudio_chan_ptransfer(ch);
        splx(s);
+       mutex_spin_enter(&sc->sc_intr_lock);
        KERNEL_UNLOCK_ONE(curlwp);
 
        return 0;