Messages in this thread | | | Date | Fri, 16 Dec 2022 01:49:38 -0800 | From | Christoph Hellwig <> | Subject | Re: [PATCH v7 23/25] PCI: dwc: Restore DMA-mask after MSI-data allocation |
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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.
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