diff options
| author | Scott Long <scottl@FreeBSD.org> | 2003-06-28 06:07:06 +0000 |
|---|---|---|
| committer | Scott Long <scottl@FreeBSD.org> | 2003-06-28 06:07:06 +0000 |
| commit | 7f958011881c13d858fcfbc360add48877300b66 (patch) | |
| tree | b97566c97c3fda2bc2f234218a41dec5db844385 /sys/amd64 | |
| parent | e493a5d90cb77283ec07a7c063c266beec4398a6 (diff) | |
Notes
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/busdma_machdep.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/amd64/amd64/busdma_machdep.c b/sys/amd64/amd64/busdma_machdep.c index e2cd2d446a00..e46bacca0df4 100644 --- a/sys/amd64/amd64/busdma_machdep.c +++ b/sys/amd64/amd64/busdma_machdep.c @@ -90,6 +90,7 @@ struct bus_dmamap { bus_size_t buflen; /* unmapped buffer length */ bus_dmamap_callback_t *callback; void *callback_arg; + struct mtx *callback_mtx; STAILQ_ENTRY(bus_dmamap) links; }; @@ -867,8 +868,12 @@ busdma_swi(void) while ((map = STAILQ_FIRST(&bounce_map_callbacklist)) != NULL) { STAILQ_REMOVE_HEAD(&bounce_map_callbacklist, links); mtx_unlock(&bounce_lock); + if (map->callback_mtx != NULL) + mtx_lock(map->callback_mtx); bus_dmamap_load(map->dmat, map, map->buf, map->buflen, map->callback, map->callback_arg, /*flags*/0); + if (map->callback_mtx != NULL) + mtx_unlock(map->callback_mtx); mtx_lock(&bounce_lock); } mtx_unlock(&bounce_lock); |