diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/iommu.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/iommu.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c index 5ef55f3b0987..fc46fcac3921 100644 --- a/arch/powerpc/platforms/cell/iommu.c +++ b/arch/powerpc/platforms/cell/iommu.c @@ -1161,11 +1161,20 @@ __setup("iommu_fixed=", setup_iommu_fixed); static u64 cell_dma_get_required_mask(struct device *dev) { + struct dma_map_ops *dma_ops; + if (!dev->dma_mask) return 0; - if (iommu_fixed_disabled && get_dma_ops(dev) == &dma_iommu_ops) - return dma_iommu_get_required_mask(dev); + if (!iommu_fixed_disabled && + cell_iommu_get_fixed_address(dev) != OF_BAD_ADDR) + return DMA_BIT_MASK(64); + + dma_ops = get_dma_ops(dev); + if (dma_ops->get_required_mask) + return dma_ops->get_required_mask(dev); + + WARN_ONCE(1, "no get_required_mask in %p ops", dma_ops); return DMA_BIT_MASK(64); } |