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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2013-10-09 20:56:33 +0400 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2013-10-09 20:56:33 +0400 |
| commit | eb1ddc00b81cb8cb23891b6c7c5fbfaea29f3c73 (patch) | |
| tree | 19cef10472e84e085d51068fdff191749c829a78 /drivers/xen | |
| parent | 83862ccfc0a03212fde43b4ac29c28381828768b (diff) | |
| download | linux-eb1ddc00b81cb8cb23891b6c7c5fbfaea29f3c73.tar.xz | |
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 <stefano.stabellini@eu.citrix.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 12 |
1 files changed, 12 insertions, 0 deletions
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); |