diff options
| author | nonaka <nonaka@NetBSD.org> | 2019-12-06 12:46:06 +0000 |
|---|---|---|
| committer | nonaka <nonaka@NetBSD.org> | 2019-12-06 12:46:06 +0000 |
| commit | 0036f4b358d892ba33d0d8c17c42e00134477a54 (patch) | |
| tree | 15f0bfd13327fc6c9612084e708f488fa61a92fd /sys/dev/hyperv/hyperv_common.c | |
| parent | bd8fa5325bc81f3c8df58fd95659f999e5667e62 (diff) | |
Clear the allocated memory in hyperv_dma_alloc().
Diffstat (limited to 'sys/dev/hyperv/hyperv_common.c')
| -rw-r--r-- | sys/dev/hyperv/hyperv_common.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/dev/hyperv/hyperv_common.c b/sys/dev/hyperv/hyperv_common.c index 620865c45b6..bc062c621ab 100644 --- a/sys/dev/hyperv/hyperv_common.c +++ b/sys/dev/hyperv/hyperv_common.c @@ -1,4 +1,4 @@ -/* $NetBSD: hyperv_common.c,v 1.2 2019/05/31 04:23:19 nonaka Exp $ */ +/* $NetBSD: hyperv_common.c,v 1.3 2019/12/06 12:46:06 nonaka Exp $ */ /*- * Copyright (c) 2009-2012,2016-2017 Microsoft Corp. @@ -29,7 +29,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: hyperv_common.c,v 1.2 2019/05/31 04:23:19 nonaka Exp $"); +__KERNEL_RCSID(0, "$NetBSD: hyperv_common.c,v 1.3 2019/12/06 12:46:06 nonaka Exp $"); #include "hyperv.h" @@ -155,6 +155,10 @@ hyperv_dma_alloc(bus_dma_tag_t dmat, struct hyperv_dma *dma, bus_size_t size, goto fail4; } + memset(dma->addr, 0, dma->map->dm_mapsize); + bus_dmamap_sync(dmat, dma->map, 0, dma->map->dm_mapsize, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + return dma->addr; fail4: bus_dmamap_destroy(dmat, dma->map); |
