diff options
Diffstat (limited to 'sys/alpha')
| -rw-r--r-- | sys/alpha/alpha/busdma_machdep.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/alpha/alpha/busdma_machdep.c b/sys/alpha/alpha/busdma_machdep.c index 12f57cde724e..7e5011650c64 100644 --- a/sys/alpha/alpha/busdma_machdep.c +++ b/sys/alpha/alpha/busdma_machdep.c @@ -94,6 +94,7 @@ struct bus_dmamap { vm_offset_t busaddress; /* address in bus space */ bus_dmamap_callback_t *callback; void *callback_arg; + struct mtx *callback_mtx; void *sgmaphandle; /* handle into sgmap */ STAILQ_ENTRY(bus_dmamap) links; }; @@ -931,8 +932,12 @@ 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); |