[src/trunk]: src/sys/arch/arm/broadcom Ensure correctness of bus_dmamap_sync ...

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

details:   https://anonhg.NetBSD.org/src/rev/b3d9b8d8a129
branches:  trunk
changeset: 332655:b3d9b8d8a129
user:      skrll <skrll%NetBSD.org@localhost>
date:      Thu Oct 02 11:58:12 2014 +0000

description:
Ensure correctness of bus_dmamap_sync operations. Shouldn't affect RPI.

diffstat:

 sys/arch/arm/broadcom/bcm2835_mbox.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 62cad8c808dc -r b3d9b8d8a129 sys/arch/arm/broadcom/bcm2835_mbox.c
--- a/sys/arch/arm/broadcom/bcm2835_mbox.c      Thu Oct 02 11:39:45 2014 +0000
+++ b/sys/arch/arm/broadcom/bcm2835_mbox.c      Thu Oct 02 11:58:12 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bcm2835_mbox.c,v 1.6 2013/04/14 15:11:52 skrll Exp $   */
+/*     $NetBSD: bcm2835_mbox.c,v 1.7 2014/10/02 11:58:12 skrll Exp $   */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bcm2835_mbox.c,v 1.6 2013/04/14 15:11:52 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bcm2835_mbox.c,v 1.7 2014/10/02 11:58:12 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -162,6 +162,7 @@
        bus_dmamap_sync(sc->sc_dmat, map, 0, buflen, BUS_DMASYNC_POSTWRITE);
        bus_dmamap_sync(sc->sc_dmat, map, 0, buflen, BUS_DMASYNC_PREREAD);
        bcmmbox_read(chan, pres);
+       bus_dmamap_sync(sc->sc_dmat, map, 0, buflen, BUS_DMASYNC_POSTREAD);
 
        mutex_exit(&sc->sc_lock);