x86: return conditional to mmu

				gfp = (gfp & ~GFP_DMA32) | GFP_DMA;

				gfp = (gfp & ~GFP_DMA32) | GFP_DMA;

				goto again;

				goto again;

			}

			}

			/* Let low level make its own zone decisions */

			gfp &= ~(GFP_DMA32|GFP_DMA);

			if (dma_ops->alloc_coherent)

				return dma_ops->alloc_coherent(dev, size,

							   dma_handle, gfp);

			return NULL;

		}

		}

		memset(ret, 0, size);

		memset(ret, 0, size);

		if (!mmu) {

			*dma_handle = bus;

			*dma_handle = bus;

			return ret;

		}

	}

	}

	if (dma_ops->alloc_coherent) {

		free_pages((unsigned long)ret, get_order(size));

		gfp &= ~(GFP_DMA|GFP_DMA32);

		return dma_ops->alloc_coherent(dev, size, dma_handle, gfp);

	}

	if (dma_ops->map_simple) {

		*dma_handle = dma_ops->map_simple(dev, virt_to_phys(ret),

					      size,

					      PCI_DMA_BIDIRECTIONAL);

		if (*dma_handle != bad_dma_address)

			return ret;

			return ret;

	}

	}

	if (panic_on_overflow)

		panic("dma_alloc_coherent: IOMMU overflow by %lu bytes\n",

		      (unsigned long)size);

	free_pages((unsigned long)ret, get_order(size));

	return NULL;

}

EXPORT_SYMBOL(dma_alloc_coherent);

EXPORT_SYMBOL(dma_alloc_coherent);

void dma_free_coherent(struct device *dev, size_t size,

void dma_free_coherent(struct device *dev, size_t size,