Re: [Xen-devel] [PATCH v1 0/2] x86/init: extend quirk use

["Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>]

On Mon, Apr 11, 2016 at 09:31:54AM +0200, Sebastian Andrzej Siewior wrote:
> On 04/09/2016 02:22 AM, Luis R. Rodriguez wrote:
> > What seems a bit odd is CE4100 leaves RTC enabled, can someone
> > confirm if indeed it really needs it, or can it also disable it
> > as with Xen, lguest, and Intel MID ?
> 
> So what you do with "x86_platform.legacy.rtc" is to skip
> add_rtc_cmos().

Yeap.

> For ce4100 I added of_have_populated_dt() to skip the probe.

Ah look at that.. x86 using device tree. Wasn't aware.

> If you plan to add this to CE4100 you could remove the
> "of_have_populated_dt()". It was meant to skip the RTC probe on all OF
> platforms but as of now, CE4100 is the only.

Indeed, this would clean up the add_rtc_cmos() path more and make
the semantics required for this a platform specific quirk which can
instead more easily be set by the platform on the generic:

        x86_early_init_platform_quirks()

Will go a head and remove this hack as part of the CE4100 patch, and
also add CE4100 to the list of subarchs that need the RTC quirk.

  Luis

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