From eb1ddc00b81cb8cb23891b6c7c5fbfaea29f3c73 Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 9 Oct 2013 16:56:33 +0000 Subject: swiotlb-xen: introduce xen_swiotlb_set_dma_mask Implement xen_swiotlb_set_dma_mask, use it for set_dma_mask on arm. Signed-off-by: Stefano Stabellini --- drivers/xen/swiotlb-xen.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/xen/swiotlb-xen.c') diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index f0fc1a4f565a..d8ef0bf577d2 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -608,3 +608,15 @@ xen_swiotlb_dma_supported(struct device *hwdev, u64 mask) return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask; } EXPORT_SYMBOL_GPL(xen_swiotlb_dma_supported); + +int +xen_swiotlb_set_dma_mask(struct device *dev, u64 dma_mask) +{ + if (!dev->dma_mask || !xen_swiotlb_dma_supported(dev, dma_mask)) + return -EIO; + + *dev->dma_mask = dma_mask; + + return 0; +} +EXPORT_SYMBOL_GPL(xen_swiotlb_set_dma_mask); -- cgit v1.2.3