Author: loos
Date: Fri Jan 9 02:47:57 2015
New Revision: 276874
URL: https://svnweb.freebsd.org/changeset/base/276874
Log:
MFC r273599:
Fix a bug where DMA maps created with bus_dmamap_create() won't increment
the map count and without being able to keep track of the current map
allocation, bus_dma_tag_destroy() will fail to proceed and will return
EBUSY even after all the maps have been correctly destroyed with
bus_dmamap_destroy().
Found while testing the detach method of a NIC.
Modified:
stable/10/sys/arm/arm/busdma_machdep-v6.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/arm/arm/busdma_machdep-v6.c
==============================================================================
--- stable/10/sys/arm/arm/busdma_machdep-v6.c Fri Jan 9 02:43:17 2015
(r276873)
+++ stable/10/sys/arm/arm/busdma_machdep-v6.c Fri Jan 9 02:47:57 2015
(r276874)
@@ -697,6 +697,8 @@ bus_dmamap_create(bus_dma_tag_t dmat, in
if (map->flags & DMAMAP_COHERENT)
atomic_add_32(&maps_coherent, 1);
atomic_add_32(&maps_total, 1);
+ dmat->map_count++;
+
return (0);
}
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
