Re: [PATCH] add delay between port write and port read

[Linus Torvalds]

On Wed, Feb 27, 2019 at 9:05 AM Mikulas Patocka <mpato...@redhat.com> wrote:
>
> Should "writeb_relaxed" on Alpha also use the barrier?

I think they should.  Only the double-underscore (__raw_xyz()) ones
are entirely unordered, the relaxed ones are just unordered wrt
regular memory and DMA.

That said, I doubt anything much cares, and I'm not sure alpha has
ever done that.

                 Linus