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Don't try to free() map in bus_dmamap_destroy() when it's

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set to &nobounce_dmamap.  A similar bug was fixed by wpaul
in revision 1.19 of sys/alpha/alpha/busdma_machdep.c.
This commit is contained in:
Maxime Henrion 2003-01-18 18:33:56 +00:00
parent 411359429f
commit 1d8dc7e4a3
1 changed files with 1 additions and 1 deletions
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2
sys/ia64/ia64/busdma_machdep.c
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@ -325,7 +325,7 @@ bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
#endif #endif
} }
if (map != NULL) { if (map != NULL && map != &nobounce_dmamap) {
if (STAILQ_FIRST(&map->bpages) != NULL) if (STAILQ_FIRST(&map->bpages) != NULL)
return (EBUSY); return (EBUSY);
free(map, M_DEVBUF); free(map, M_DEVBUF);