Re: [PATCH 2/3] ACPI / property: Support Apple _DSM properties

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On Thu, Jun 22, 2017 at 01:24:28PM +0200, Lukas Wunner wrote:
> On Thu, Jun 22, 2017 at 01:04:22PM +0300, Mika Westerberg wrote:
> > On Thu, Jun 22, 2017 at 11:54:39AM +0200, Lukas Wunner wrote:

> > > It would be good to be able to google for this message to detect if there
> > > are ever Macs out there which return something different than "3" to this
> > > _DSM call.  How about KERN_WARN or KERN_INFO?

> > Well, this is something the user might see and then gets confused on the
> > grounds: is my machine somehow broken?

> And indeed it might be:  Conceivably, Apple may change the format of the
> properties and then once again the SPI slave won't be able to initialize.
> In that case it seems beneficial to provide a clue as to the cause in dmesg.

This seems especially important when we're working with a reverse
engineered binding.

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