dma_ops->map_page == NULL

[Kári Davíðsson]

I am doing a driver that uses dma_map_single().

After changing to to linux 2.6.29.3 I am getting
segfaults in dma_map_single() because dma_ops->map_page is NULL.
Actually dma_ops looks funky too.

The driver is an of_platform_driver which is declared as an child of
the lbp (fsl,lpb) node of the device tree.

This is on powerpc 5200b platform.

rg
kd