Re: Regression due to d98849aff879 (dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code)

[Christoph Hellwig]

On Tue, Aug 06, 2019 at 02:18:49PM +0000, Lendacky, Thomas wrote:
> I think you need to keep everything inside the original if statement since
> the caller is expecting a page pointer to be returned in this case and not
> the page_address() which is returned when the DMA_ATTR_NO_KERNEL_MAPPING
> is not present.

DMA_ATTR_NO_KERNEL_MAPPING is defined to return an opaque cookie,
which just happens to be a page pointer.  So if we fix up the free side
as pointed out by Lucas we should be fine.