[PATCH 1/16] Spidernet DMA coalescing

[Christoph Hellwig]

On Wed, Dec 06, 2006 at 05:27:45PM -0600, Linas Vepstas wrote:
> 
> The current driver code performs 512 DMA mappings of a bunch of 
> 32-byte structures. This is silly, as they are all in contiguous 
> memory. Ths patch changes the code to DMA map the entie area
> with just one call.

This is still wrong.  The descriptor array must be in dma_alloc_coherent
memory, not a streaming mapping.  (I also think I pointed this out a while
ago when I made dma_alloc_coherent node-aware)