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Re: [RFC] DMA initialization for manually created devices

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Hi,

David Woodhouse <dwmw2@infradead.org> writes:
> On Tue, 2016-04-19 at 14:38 +0300, Felipe Balbi wrote:
>> 
>> The reason for that I'm using a manually created platform_device and
>> that misses dev->archdata which the underlying/parent PCI device has.
>
> Typically we'd expect you to use the parent device for DMA, as in your
> second option.
>
> That said, we're exploring the option of moving the dma_ops to be a
> first-class member of 'struct device' instead of hiding it in archdata,
> and cleaning up the way that it gets initialised for newly-created
> devices. And at that point we might end up letting it get inherited
> from the parent so your original code *would* work... but I wouldn't
> hold your breath for that.
>
> Definitely *don't* mess around in archdata.

alright, I'll patch it up to use parent device everywhere, at least for
now.

Thanks

-- 
balbi

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Thread

[RFC] DMA initialization for manually created devices Felipe Balbi <felipe.balbi@linux.intel.com> - 2016-04-19 13:50 +0200
  Re: [RFC] DMA initialization for manually created devices David Woodhouse <dwmw2@infradead.org> - 2016-04-19 14:20 +0200
    Re: [RFC] DMA initialization for manually created devices Felipe Balbi <felipe.balbi@linux.intel.com> - 2016-04-19 15:00 +0200
      Re: [RFC] DMA initialization for manually created devices Felipe Balbi <felipe.balbi@linux.intel.com> - 2016-04-20 12:40 +0200

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