[PATCH 4.14 086/115] drm/i915/lpe: Mark LPE audio runtime pm as "no callbacks"

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

commit 75eef0f1ed478284911b8723a5bdb659499a7aac upstream.

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 SyrjÃlà <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20180802140416.6062-1-chris@xxxxxxxxxxxxxxxxxx
(cherry picked from commit 46e831abe864a6b59fa3de253a681c0f2ee1bf2f)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/i915/intel_lpe_audio.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/gpu/drm/i915/intel_lpe_audio.c
+++ b/drivers/gpu/drm/i915/intel_lpe_audio.c
@@ -128,9 +128,7 @@ lpe_audio_platdev_create(struct drm_i915
 
 	kfree(rsc);
 
-	pm_runtime_forbid(&platdev->dev);
-	pm_runtime_set_active(&platdev->dev);
-	pm_runtime_enable(&platdev->dev);
+	pm_runtime_no_callbacks(&platdev->dev);
 
 	return platdev;