On Tue, Jan 30, 2018 at 02:21:46PM +0100, Geert Uytterhoeven wrote:
> If NO_DMA=y:
> 
>     ERROR: "bad_dma_ops" [drivers/iio/adc/stm32-dfsdm-adc.ko] undefined!
> 
> Add a dependency on HAS_DMA to fix this.

Once again I have to ask why we're doing this per driver and not having
the few architectures that have this issue set something up.