Hi all, the dma_get_required_mask dma API implementation has always been a little odd, in that we by default don't wire it up struct dma_map_ops, but instead hard code a default implementation. powerpc and ia64 override this default and either call a method or otherwise duplicate the default.
This series always enabled the method and just falls back to the previous default implementation when it is not available, as well as fixing up a few bits in the default implementations. This already allows removing the ia64 override of the implementation, and will also allow to remove the powerpc one together with a few additional cleanups in the powerpc code, but those will be sent separately with other powerpc DMA API patches. Last but not least the method will allow us to return a more sensible value for typical iommu dma_ops eventually, but that is left to another series as well. Additionally the dma-direct code has been a bit sloppy in when it was using phys_to_dma in a few places, so this gets fixed up as well as actually respecting the bus_dma_mask everywhere instead of just rejecting dma mask that don't fit into it. Alltogether this should be all core dma-direct changes required to move powerpc over to the generic code. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
