On Thu, Sep 12, 2013 at 02:07:48PM -0700, Kevin Hilman wrote:

IMO, this decision belongs to the PM domain, not to the core.  We have
an established legacy with the current core default (auto) and changing
that means lots of breakage.

Yup.

The "forbid by default" can just as easily be handled in the PM domain
for the group of devices that need it, so why not do it there?

Or at the device level - I'd guess most I2C devices won't end up in a
domain outside of ACPI.  Mika's latest version of the patches address
this issue, the default is left alone.
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