* @dev: The pointer to the device
* @attr: device dma attributes
*/
-void acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
+int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
{
const struct iommu_ops *iommu;
+ u64 size;
iort_set_dma_mask(dev);
iommu = iort_iommu_configure(dev);
+ if (IS_ERR(iommu) && PTR_ERR(iommu) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1);
/*
* Assume dma valid range starts at 0 and covers the whole
* coherent_dma_mask.
*/
- arch_setup_dma_ops(dev, 0, dev->coherent_dma_mask + 1, iommu,
- attr == DEV_DMA_COHERENT);
+ arch_setup_dma_ops(dev, 0, size, iommu, attr == DEV_DMA_COHERENT);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(acpi_dma_configure);