Re: [PATCH v2 02/22] asm-generic/io.h: add ioremap_nopost remap interface

Bjorn Helgaas
2017-03-30T16:47:38Z

On Tue, Mar 28, 2017 at 03:45:43PM +0100, Lorenzo Pieralisi wrote:
> On Mon, Mar 27, 2017 at 08:41:10PM -0500, Bjorn Helgaas wrote:
> > On Mon, Mar 27, 2017 at 10:49:30AM +0100, Lorenzo Pieralisi wrote:

> > > #define ioremap_uc ioremap_uc
> > > +#define ioremap_nopost ioremap_nocache
> >
> > These are all the same as the default from asm-generic.h. Do we really
> > need these definitions in alpha, avr32, frv, ia64, x86?
>
> Those arches do not include asm-generic.h (I suppose for a good reason)

OK, that explains it. I'm not at all sure there's a good reason for
those arches not using asm-generic.h, but I haven't looked at the code
to see.

> but a definition is needed anyway if we want code using ioremap_nopost()
> to be unconditional. This is one way of doing it, there are others not
> sure they are any better, I am open to suggestions.