Re: [Linaro-mm-sig] [PATCH 4/8] ARM: dma-mapping: implement dma sg methods on top of generic dma ops

On Mon, Jun 20, 2011 at 09:50:09AM +0200, Marek Szyprowski wrote:

This patch converts all dma_sg methods to be generic (independent of the current DMA mapping implementation for ARM architecture). All dma sg operations are now implemented on top of respective dma_map_page/dma_sync_single_for* operations from dma_map_ops structure.

No. We really don't want to do this. If we want to move the dsb() out of the mapping functions (which I have a patch for) to avoid doing a dsb() on each and every sg segment, then we must not use the generic stuff.