acpi_powerres: Fix turning off power resources on first D-state switchHEADmain

The power resource dependencies for each `_PRx` object are discovered
and cached in `ac_prx` on the power consumer struct
(`struct acpi_powerconsumer`) when a power consumer is registered. This
is done in `acpi_pwr_get_power_resources`. ACPI guarantees these `_PRx`
objects will evaluate to the same thing each time they are called.

This discovery process also registers those power resources, which were
previously only registered when they were referenced by the relevant
`_PRx` object for the target D-state when switching. This meant that
the first D-state switch for a power consumer would not turn off any
power resources as they wouldn't have been registered yet. This change
fixes this.

`ac_prx` will be used by subsequent patches.

Reviewed by:	markj, imp, jrm (mentor)
Approved by:	markj, jrm (mentor)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D48385

0 files changed, 0 insertions, 0 deletions