Hi, David Woodhouse <dwmw2@xxxxxxxxxxxxx> 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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