[src/trunk]: src/sys/dev/acpi provide a lock for mpu_attach.

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

details:   https://anonhg.NetBSD.org/src/rev/45cbabfd3cf2
branches:  trunk
changeset: 771926:45cbabfd3cf2
user:      mrg <mrg%NetBSD.org@localhost>
date:      Fri Dec 09 08:56:54 2011 +0000

description:
provide a lock for mpu_attach.

diffstat:

 sys/dev/acpi/mpu_acpi.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (35 lines):

diff -r 2ab7e094a97e -r 45cbabfd3cf2 sys/dev/acpi/mpu_acpi.c
--- a/sys/dev/acpi/mpu_acpi.c   Fri Dec 09 06:50:36 2011 +0000
+++ b/sys/dev/acpi/mpu_acpi.c   Fri Dec 09 08:56:54 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: mpu_acpi.c,v 1.12 2011/11/24 03:35:57 mrg Exp $ */
+/* $NetBSD: mpu_acpi.c,v 1.13 2011/12/09 08:56:54 mrg Exp $ */
 
 /*
  * Copyright (c) 2002 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: mpu_acpi.c,v 1.12 2011/11/24 03:35:57 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: mpu_acpi.c,v 1.13 2011/12/09 08:56:54 mrg Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -47,6 +47,7 @@
 
 struct mpu_acpi_softc {
        struct mpu_softc sc_mpu;
+       kmutex_t sc_lock;
 };
 
 CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match,
@@ -118,6 +119,8 @@
 
        sc->model = "Roland MPU-401 MIDI UART";
        sc->sc_dev = self;
+       sc->lock = &asc->sc_lock;
+       mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_AUDIO);
        mpu_attach(sc);
 
        sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq,