4.18-stable review patch. If anyone has any objections, please let me know.
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From: Chris Wilson chris@chris-wilson.co.uk
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@chris-wilson.co.uk Cc: Takashi Iwai tiwai@suse.de Cc: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: stable@vger.kernel.org Reviewed-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20180802140416.6062-1-chris@ch... (cherry picked from commit 46e831abe864a6b59fa3de253a681c0f2ee1bf2f) Signed-off-by: Rodrigo Vivi rodrigo.vivi@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -127,9 +127,7 @@ lpe_audio_platdev_create(struct drm_i915 return platdev; }
- pm_runtime_forbid(&platdev->dev); - pm_runtime_set_active(&platdev->dev); - pm_runtime_enable(&platdev->dev); + pm_runtime_no_callbacks(&platdev->dev);
return platdev; }