On Fri, Dec 16, 2022 at 12:34:23PM +0300, Serge Semin wrote: > What about instead of save/restore pattern I'll just change the > dma_set_mask_and_coherent() method with the dma_set_coherent_mask() > function call? It seems cleaner. Like this: > Thus the platform-specific streaming DMA mask would be preserved. > Since it's PCIe then having the streaming DMA-mask less than 32-bits > wide is very much improbable. Moreover DW PCIe AXI-interface can be > synthesize only with one out of two address bus widths: 32 and 64. Where platform-specific means the dwc subdriver? Yes, that seems to work. Alternatively have a flag that says which streaming mask to set.
