[Intel-gfx] [PATCH v3 5/6] drm/i915/audio: clean up LPE audio init/cleanup calls

[Jani Nikula <jani.nikula@intel.com>]

Unify audio init/cleanup paths wrt LPE audio, and base the logic on the
return values from LPE audio calls. Move the platform device check on
cleanup to intel_lpe_audio.c, thereby limiting all audio.lpe substruct
access to that file.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c     | 14 ++++++++------
 drivers/gpu/drm/i915/display/intel_lpe_audio.c |  6 ++++--
 drivers/gpu/drm/i915/display/intel_lpe_audio.h |  4 ++--
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 24e76657d561..aa7037021376 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -1403,8 +1403,10 @@ static void i915_audio_component_cleanup(struct drm_i915_private *dev_priv)
  */
 void intel_audio_init(struct drm_i915_private *dev_priv)
 {
-	if (intel_lpe_audio_init(dev_priv) < 0)
-		i915_audio_component_init(dev_priv);
+	if (!intel_lpe_audio_init(dev_priv))
+		return;
+
+	i915_audio_component_init(dev_priv);
 }
 
 /**
@@ -1414,8 +1416,8 @@ void intel_audio_init(struct drm_i915_private *dev_priv)
  */
 void intel_audio_deinit(struct drm_i915_private *dev_priv)
 {
-	if ((dev_priv)->audio.lpe.platdev != NULL)
-		intel_lpe_audio_teardown(dev_priv);
-	else
-		i915_audio_component_cleanup(dev_priv);
+	if (!intel_lpe_audio_teardown(dev_priv))
+		return;
+
+	i915_audio_component_cleanup(dev_priv);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.c b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
index 4970bf146c4a..a2984718d136 100644
--- a/drivers/gpu/drm/i915/display/intel_lpe_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.c
@@ -296,10 +296,10 @@ int intel_lpe_audio_init(struct drm_i915_private *dev_priv)
  *
  * release all the resources for LPE audio <-> i915 bridge.
  */
-void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
+int intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
 {
 	if (!HAS_LPE_AUDIO(dev_priv))
-		return;
+		return -ENODEV;
 
 	lpe_audio_platdev_destroy(dev_priv);
 
@@ -307,6 +307,8 @@ void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv)
 
 	dev_priv->audio.lpe.irq = -1;
 	dev_priv->audio.lpe.platdev = NULL;
+
+	return 0;
 }
 
 /**
diff --git a/drivers/gpu/drm/i915/display/intel_lpe_audio.h b/drivers/gpu/drm/i915/display/intel_lpe_audio.h
index f848c5038714..030874623872 100644
--- a/drivers/gpu/drm/i915/display/intel_lpe_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_lpe_audio.h
@@ -12,8 +12,8 @@ enum pipe;
 enum port;
 struct drm_i915_private;
 
-int  intel_lpe_audio_init(struct drm_i915_private *dev_priv);
-void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
+int intel_lpe_audio_init(struct drm_i915_private *dev_priv);
+int intel_lpe_audio_teardown(struct drm_i915_private *dev_priv);
 void intel_lpe_audio_irq_handler(struct drm_i915_private *dev_priv);
 void intel_lpe_audio_notify(struct drm_i915_private *dev_priv,
 			    enum pipe pipe, enum port port,
-- 
2.30.2