drm/i915: Call runtime_pm_disable directly

Allows us to mark it static and so forgoe the kerneldoc for it.

Note that intel_power_domains_fini is also called from failure paths
in the driver load sequence. But the call to runtime_pm_disable for
that is harmless since by default runtime pm is already disabled.

v2: Augment the commit message as discussed with Imre on irc.
Reviewed-by: NImre Deak <imre.deak@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -1846,12 +1846,10 @@ int i915_driver_unload(struct drm_device *dev)
 		return ret;
 	}
 
-	intel_runtime_pm_disable(dev_priv);
+	intel_power_domains_fini(dev_priv);
 
 	intel_gpu_ips_teardown();
 
-	intel_power_domains_fini(dev_priv);
-
 	i915_teardown_sysfs(dev);
 
 	WARN_ON(unregister_oom_notifier(&dev_priv->mm.oom_notifier));

drivers/gpu/drm/i915/intel_drv.h

@@ -1085,7 +1085,6 @@ int intel_power_domains_init(struct drm_i915_private *);
 void intel_power_domains_fini(struct drm_i915_private *);
 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv);
 void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
-void intel_runtime_pm_disable(struct drm_i915_private *dev_priv);
 
 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
 				    enum intel_display_power_domain domain);

drivers/gpu/drm/i915/intel_runtime_pm.c

@@ -995,8 +995,26 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv)
 	return 0;
 }
 
+static void intel_runtime_pm_disable(struct drm_i915_private *dev_priv)
+{
+	struct drm_device *dev = dev_priv->dev;
+	struct device *device = &dev->pdev->dev;
+
+	if (!HAS_RUNTIME_PM(dev))
+		return;
+
+	if (!intel_enable_rc6(dev))
+		return;
+
+	/* Make sure we're not suspended first. */
+	pm_runtime_get_sync(device);
+	pm_runtime_disable(device);
+}
+
 void intel_power_domains_fini(struct drm_i915_private *dev_priv)
 {
+	intel_runtime_pm_disable(dev_priv);
+
 	/* The i915.ko module is still not prepared to be loaded when
 	 * the power well is not enabled, so just enable it in case
 	 * we're going to unload/reload. */
@@ -1142,22 +1160,6 @@ void intel_runtime_pm_enable(struct drm_i915_private *dev_priv)
 	pm_runtime_put_autosuspend(device);
 }
 
-void intel_runtime_pm_disable(struct drm_i915_private *dev_priv)
-{
-	struct drm_device *dev = dev_priv->dev;
-	struct device *device = &dev->pdev->dev;
-
-	if (!HAS_RUNTIME_PM(dev))
-		return;
-
-	if (!intel_enable_rc6(dev))
-		return;
-
-	/* Make sure we're not suspended first. */
-	pm_runtime_get_sync(device);
-	pm_runtime_disable(device);
-}
-
 /* Display audio driver power well request */
 int i915_request_power_well(void)
 {