Re: [PATCH 1/2] [RFC] ata: ahci: Respect bus DMA constraints

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On Thu, Mar 07, 2019 at 12:14:06PM +0100, Marek Vasut wrote:
> > Right, but whoever *interprets* the device masks after the driver has
> > overridden them should be taking the (smaller) bus mask into account as
> > well, so the question is where is *that* not being done correctly?
> 
> Do you have a hint where I should look for that ?

If this a 32-bit ARM platform it might the complete lack of support
for bus_dma_mask in arch/arm/mm/dma-mapping.c..



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