diff options
| -rw-r--r-- | arch/avr32/mm/dma-coherent.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c index 58610d0df7ed..54534e5d0781 100644 --- a/arch/avr32/mm/dma-coherent.c +++ b/arch/avr32/mm/dma-coherent.c @@ -146,7 +146,8 @@ static dma_addr_t avr32_dma_map_page(struct device *dev, struct page *page, { void *cpu_addr = page_address(page) + offset; - dma_cache_sync(dev, cpu_addr, size, direction); + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + dma_cache_sync(dev, cpu_addr, size, direction); return virt_to_bus(cpu_addr); } @@ -162,6 +163,10 @@ static int avr32_dma_map_sg(struct device *dev, struct scatterlist *sglist, sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset; virt = sg_virt(sg); + + if (attrs & DMA_ATTR_SKIP_CPU_SYNC) + continue; + dma_cache_sync(dev, virt, sg->length, direction); } |