diff options
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | lib/swiotlb.c | 10 |
2 files changed, 7 insertions, 5 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 8e0777fae3c..627e4c89328 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3928,8 +3928,6 @@ M: bootc@bootc.net S: Maintained SOFTWARE RAID (Multiple Disks) SUPPORT -P: Ingo Molnar -M: mingo@redhat.com P: Neil Brown M: neilb@suse.de L: linux-raid@vger.kernel.org diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 78330c37a61..5f6c629a924 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -467,9 +467,13 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t dev_addr; void *ret; int order = get_order(size); + u64 dma_mask = DMA_32BIT_MASK; + + if (hwdev && hwdev->coherent_dma_mask) + dma_mask = hwdev->coherent_dma_mask; ret = (void *)__get_free_pages(flags, order); - if (ret && address_needs_mapping(hwdev, virt_to_bus(ret), size)) { + if (ret && !is_buffer_dma_capable(dma_mask, virt_to_bus(ret), size)) { /* * The allocated memory isn't reachable by the device. * Fall back on swiotlb_map_single(). @@ -493,9 +497,9 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, dev_addr = virt_to_bus(ret); /* Confirm address can be DMA'd by device */ - if (address_needs_mapping(hwdev, dev_addr, size)) { + if (!is_buffer_dma_capable(dma_mask, dev_addr, size)) { printk("hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n", - (unsigned long long)*hwdev->dma_mask, + (unsigned long long)dma_mask, (unsigned long long)dev_addr); /* DMA_TO_DEVICE to avoid memcpy in unmap_single */ |