From: David Woodhouse <dwmw@xxxxxxxxxxxx>
Date: Mon, 19 Feb 2018 13:04:12 +0000
> Commit f719582435 ("PCI: Add pci_mmap_resource_range() and use it for
> ARM64") added this generic function with the intent of using it
> everywhere and ultimately killing the old arch-specific implementations.
>
> Let's get on with that eradication...
>
> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
David, the generic code is definitely doing different things.
For one, the sparc specific code allows mmap'ing any address range
within a PCI bus device. The generic code does not allow that.
I know this was used by the X server and that's why the logic is
there.
So we can't just use the generic code without breaking things, sorry.
