@@ -133,6 +133,10 @@ static void bfin_dma_sync_sg_for_device(struct device *dev,
for_each_sg(sg_list, sg, nelems, i) {
sg->dma_address = (dma_addr_t) sg_virt(sg);
+
+ if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
+ continue;
+
__dma_sync(sg_dma_address(sg), sg_dma_len(sg), direction);
}
}
@@ -143,7 +147,8 @@ static dma_addr_t bfin_dma_map_page(struct device *dev, struct page *page,
{
dma_addr_t handle = (dma_addr_t)(page_address(page) + offset);
- _dma_sync(handle, size, dir);
+ if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
+ _dma_sync(handle, size, dir);
return handle;
}
The use of DMA_ATTR_SKIP_CPU_SYNC was not consistent across all of the DMA APIs in the arch/arm folder. This change is meant to correct that so that we get consistent behavior. Cc: Steven Miao <realmz6@gmail.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> --- arch/blackfin/kernel/dma-mapping.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)