Re: dma_ops->map_page == NULL

On Tuesday 07 July 2009 21:08:25 Benjamin Herrenschmidt wrote:

On Tue, 2009-07-07 at 10:15 +1000, Mark Nelson wrote:

quoted

When the 32 and 64bit DMA code was merged in .28 , map_/unmap_page() was
added in favour of map_/unmap_single() (which was later removed in .29)
so you'll have to replace your calls to dma_map_single() with
dma_map_page(). Just pass it the page and offset rather than the address.

Wait a minute ... dma_map_single() should still work, it will just call
dma_map_page() underneath. All dma_ops should have a ->map page
callback.

Sorry my mistake - I was thinking of when we removed the map/unmap_single()
from the dma_mapping_ops.

Mark.