Messages in this thread Patch in this message | | | From | Becky Bruce <> | Subject | [PATCH 02/11] swiotlb: Allow arch to provide address_needs_mapping | Date | Thu, 18 Dec 2008 23:11:13 -0600 |
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Rename it swiotlb_addr_needs_mapping and make it weak so architectures can override it if needed.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> --- lib/swiotlb.c | 11 ++++++----- 1 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 3d9ac10..9b89a9d 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -272,8 +272,8 @@ cleanup1: return -ENOMEM; } -static int -address_needs_mapping(struct device *hwdev, dma_addr_t addr, size_t size) +int __weak +swiotlb_addr_needs_mapping(struct device *hwdev, dma_addr_t addr, size_t size) { return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size); } @@ -562,7 +562,8 @@ swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size, * we can safely return the device addr and not worry about bounce * buffering it. */ - if (!address_needs_mapping(hwdev, dev_addr, size) && !swiotlb_force) + if (!swiotlb_addr_needs_mapping(hwdev, dev_addr, size) && + !swiotlb_force) return dev_addr; /* @@ -579,7 +580,7 @@ swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size, /* * Ensure that the address returned is DMA'ble */ - if (address_needs_mapping(hwdev, dev_addr, size)) + if (swiotlb_addr_needs_mapping(hwdev, dev_addr, size)) panic("map_single: bounce buffer is not DMA'ble"); return dev_addr; @@ -723,7 +724,7 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, addr = sg_virt(sg); dev_addr = virt_to_bus(addr); if (swiotlb_force || - address_needs_mapping(hwdev, dev_addr, sg->length)) { + swiotlb_addr_needs_mapping(hwdev, dev_addr, sg->length)) { void *map = map_single(hwdev, addr, sg->length, dir); if (!map) { /* Don't panic here, we expect map_sg users -- 1.5.6.5
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