[PATCH 7/7] efi_rtc: probe function error out in case no efi runtime enabled

[matt@console-pimps.org (Matt Fleming)]

(Argh, this was sat in my outbox for over a week)

On Thu, 25 Sep, at 05:38:50PM, Mark Salter wrote:
> On Thu, 2014-09-25 at 22:18 +0100, Matt Fleming wrote:
> > On Mon, 22 Sep, at 12:33:29PM, Mark Salter wrote:
> > > 
> > > Is this still needed after commit da167ad7638759:
> > > 
> > >   rtc: ia64: allow other architectures to use EFI RTC
> > 
> > Umm... we should really look at disabling this for x86, since the EFI
> > time functions don't work on a bunch of machines I've got here.
> > 
> > And it looks like someone enabled this driver and triggered an oops on
> > their 32-bit EFI tablet,
> > 
> >   https://bugzilla.kernel.org/show_bug.cgi?id=84241#c21
> 
> Previously, it depended on IA64. If it's not worth the trouble for
> x86 then I'd say have it depend on !X86 also. Newer EFI-supporting
> architectures are unlikely to have the same legacy issues as x86
> so I don't think it'll end up being an ever growing list.
 
Yeah that's what I was thinking. For x86, it's the age old "Windows
doesn't use it, so it was never validated" issue.

I'll send an update.

-- 
Matt Fleming, Intel Open Source Technology Center