microblaze: Fix sg_dma_len() regression
FUJITA Tomonori [Tue, 8 Jun 2010 11:03:15 +0000 (20:03 +0900)]
The commit "asm-generic: add NEED_SG_DMA_LENGTH to define sg_dma_len()"
18e98307de0d746cb0845ebf66535ce2184c25a2 broke microblaze compilation.

dma_direct_map_sg() sets sg->dma_length, however microblaze doesn't
set NEED_SG_DMA_LENGTH so scatterlist strcutres doesn't include
dma_length.

sg->dma_length is always equal to sg->length on microblaze. So we
don't need to set set dma_length, that is, microblaze can simply use
sg->length.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/dma.c

index 9dcd90b..79c7465 100644 (file)
@@ -90,7 +90,6 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
        /* FIXME this part of code is untested */
        for_each_sg(sgl, sg, nents, i) {
                sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev);
-               sg->dma_length = sg->length;
                __dma_sync_page(page_to_phys(sg_page(sg)), sg->offset,
                                                        sg->length, direction);
        }