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| author | loos <loos@FreeBSD.org> | 2015-01-09 02:47:57 +0000 |
|---|---|---|
| committer | loos <loos@FreeBSD.org> | 2015-01-09 02:47:57 +0000 |
| commit | 5eabc7cb6715f72586fc872eab489990b50686a3 (patch) | |
| tree | aa23b6512787687ecb9cb853a26c2776c34ca8e4 /sys/arm | |
| parent | 544e0536f8812fa76e463d665fcc4fa9f25680df (diff) | |
| download | FreeBSD-src-5eabc7cb6715f72586fc872eab489990b50686a3.zip FreeBSD-src-5eabc7cb6715f72586fc872eab489990b50686a3.tar.gz | |
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.
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/arm/busdma_machdep-v6.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/arm/arm/busdma_machdep-v6.c b/sys/arm/arm/busdma_machdep-v6.c index 9a2a742..39014a4 100644 --- a/sys/arm/arm/busdma_machdep-v6.c +++ b/sys/arm/arm/busdma_machdep-v6.c @@ -697,6 +697,8 @@ bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp) if (map->flags & DMAMAP_COHERENT) atomic_add_32(&maps_coherent, 1); atomic_add_32(&maps_total, 1); + dmat->map_count++; + return (0); } |
