On 11/10/2015 03:54 PM, Arnd Bergmann wrote:
In our drivers for 32-bit devices, we have to explicitly set the DMA
mask to 32-bits in order to get any DMA working.
Do you mean PCI devices or platform devices?
Platform.
Maybe the parent bus is lacking a dma-ranges property?
All of this applies only on device-tree platforms. Sinan and I are
working on an ACPI server platform. So we never call
of_dma_configure(), and we don't have a dma-ranges property.
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