flags |= GFP_DMA;
ret = (void *)__get_free_pages(flags, get_order(size));
- if (!ret) {
- /* DMA_FROM_DEVICE is to avoid the memcpy in map_single */
- dma_addr_t handle;
- handle = swiotlb_map_single(NULL, NULL, size, DMA_FROM_DEVICE);
- if (dma_mapping_error(handle))
- return NULL;
-
- ret = phys_to_virt(handle);
- }
+ if (!ret)
+ return NULL;
memset(ret, 0, size);
dev_addr = virt_to_phys(ret);
void
swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
{
- if (!(vaddr >= (void *)io_tlb_start
- && vaddr < (void *)io_tlb_end))
- free_pages((unsigned long) vaddr, get_order(size));
- else
- /* DMA_TO_DEVICE to avoid memcpy in unmap_single */
- swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE);
+ free_pages((unsigned long) vaddr, get_order(size));
}
static void swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)