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SubjectRe: use generic DMA mapping code in powerpc V4
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Date
Next step: 7decbcfc656805603ab97206b3f816f26cd2cf7d (powerpc/dma: use 
generic direct and swiotlb ops)

git checkout 7decbcfc656805603ab97206b3f816f26cd2cf7d

We have the bad commit! :-) The PASEMI onboard ethernet doesn't work
with this commit anymore.

Error messages:

[  367.627623] pci 0000:00:1a.0: dma_direct_map_page: overflow
0x000000026bcb5002+110 of device mask ffffffff bus mask 0
[  367.627631] pci 0000:00:1a.0: dma_direct_map_page: overflow
0x000000026bcb5002+110 of device mask ffffffff bus mask 0
[  367.627639] pci 0000:00:1a.0: dma_direct_map_page: overflow
0x000000026bcb5002+110 of device mask ffffffff bus mask 0
[  367.627647] pci 0000:00:1a.0: dma_direct_map_page: overflow
0x000000026bcb5002+110 of device mask ffffffff bus mask 0

pci 0000:00:1a.0 = 00:1a.0 DMA controller: PA Semi, Inc PWRficient DMA
Controller (rev 12)

X5000 (P5020 board): U-Boot loads the kernel and the dtb file. Then the
kernel starts but it doesn't find any hard disks (partitions). That
means this is also the bad commit for the P5020 board.

Link to the bad commit:
http://git.infradead.org/users/hch/misc.git/commit/7decbcfc656805603ab97206b3f816f26cd2cf7d

Link to the Git:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/powerpc-dma.5

The commit before (977706f9755d2d697aa6f45b4f9f0e07516efeda -
powerpc/dma: remove dma_nommu_mmap_coherent) works without any problems.

-- Christian


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