Quoting Chris Wilson (2018-08-02 17:04:16) > The LPE audio is a child device of i915, it is powered up and down > alongside the igfx and presents no independent runtime interface. This > aptly fulfils the description of a "No-Callback" Device, so mark it > thus. > > Fixes: 183c00350ccd ("drm/i915: Fix runtime PM for LPE audio") > Testcase: igt/pm_rpm/basic-pci-d3-state > Testcase: igt/pm_rpm/basic-rte > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Cc: Takashi Iwai <tiwai@xxxxxxx> > Cc: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx Checks out with the documentation. Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> Regards, Joonas