drm/i915: Move load time shrinker registration later

According to the new init phases scheme we should register the driver
with frameworks/userspace only one the device is setup fully. So move
the shrinker registration later accordingly.

Also fix the shrinker unregistration order wrt. the acpi unregistration
to fix the corresponding init order.
Signed-off-by: NImre Deak <imre.deak@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1458128348-15730-10-git-send-email-imre.deak@intel.com

drivers/gpu/drm/i915/i915_dma.c

@@ -1117,8 +1117,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
 	i915_gem_load_init_fences(dev_priv);
 
-	i915_gem_shrinker_init(dev_priv);
-
 	/* On the 945G/GM, the chipset reports the MSI capability on the
 	 * integrated graphics even though the support isn't actually there
 	 * according to the published specs.  It doesn't appear to function
@@ -1138,7 +1136,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	if (INTEL_INFO(dev)->num_pipes) {
 		ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes);
 		if (ret)
-			goto out_cleanup_shrinker;
+			goto out_disable_msi;
 	}
 
 	ret = i915_load_modeset_init(dev);
@@ -1147,6 +1145,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 		goto out_power_well;
 	}
 
+	i915_gem_shrinker_init(dev_priv);
 	/*
 	 * Notify a valid surface after modesetting,
 	 * when running inside a VM.
@@ -1176,9 +1175,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 out_power_well:
 	intel_power_domains_fini(dev_priv);
 	drm_vblank_cleanup(dev);
-out_cleanup_shrinker:
-	i915_gem_shrinker_cleanup(dev_priv);
-
+out_disable_msi:
 	if (dev->pdev->msi_enabled)
 		pci_disable_msi(dev->pdev);
 
@@ -1223,12 +1220,11 @@ int i915_driver_unload(struct drm_device *dev)
 
 	i915_teardown_sysfs(dev);
 
-	i915_gem_shrinker_cleanup(dev_priv);
-
 	io_mapping_free(dev_priv->gtt.mappable);
 	arch_phys_wc_del(dev_priv->gtt.mtrr);
 
 	acpi_video_unregister();
+	i915_gem_shrinker_cleanup(dev_priv);
 
 	drm_vblank_cleanup(dev);