Re: [PATCH 3/4] ARM/dma-mapping: don't handle NULL devices in dma-direct.h

[Russell King - ARM Linux admin]

On Thu, Sep 17, 2020 at 07:32:28PM +0200, Christoph Hellwig wrote:
> The DMA API removed support for not passing in a device a long time
> ago, so remove the NULL checks.

What happens with ISA devices?

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