bool coherent;
unsigned long offset;
const struct iommu_ops *iommu;
+ u64 mask;
/*
* Set default coherent_dma_mask to 32 bit. Drivers are expected to
* Limit coherent and dma mask based on size and default mask
* set by the driver.
*/
- dev->coherent_dma_mask = min(dev->coherent_dma_mask,
- DMA_BIT_MASK(ilog2(dma_addr + size)));
- *dev->dma_mask = min((*dev->dma_mask),
- DMA_BIT_MASK(ilog2(dma_addr + size)));
+ mask = DMA_BIT_MASK(ilog2(dma_addr + size - 1) + 1);
+ dev->coherent_dma_mask &= mask;
+ *dev->dma_mask &= mask;
coherent = of_dma_is_coherent(np);
dev_dbg(dev, "device is%sdma coherent\n",