drm/i915: Don't try to tear down the stolen drm_mm if it's not there

[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_gem_stolen.c

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index f713294618fe8f3085698b6b7bb2166349f0a5d6..982d4732cecff93e45370f30dfab03cc1bfdb32a 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -147,7 +147,7 @@ int i915_gem_stolen_setup_compression(struct drm_device *dev, int size)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
-       if (dev_priv->mm.stolen_base == 0)
+       if (!drm_mm_initialized(&dev_priv->mm.stolen))
                return -ENODEV;
 
        if (size < dev_priv->cfb_size)
@@ -179,6 +179,9 @@ void i915_gem_cleanup_stolen(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
+       if (!drm_mm_initialized(&dev_priv->mm.stolen))
+               return;
+
        i915_gem_stolen_cleanup_compression(dev);
        drm_mm_takedown(&dev_priv->mm.stolen);
 }
@@ -300,7 +303,7 @@ i915_gem_object_create_stolen(struct drm_device *dev, u32 size)
        struct drm_i915_gem_object *obj;
        struct drm_mm_node *stolen;
 
-       if (dev_priv->mm.stolen_base == 0)
+       if (!drm_mm_initialized(&dev_priv->mm.stolen))
                return NULL;
 
        DRM_DEBUG_KMS("creating stolen object: size=%x\n", size);
@@ -331,7 +334,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_device *dev,
        struct drm_i915_gem_object *obj;
        struct drm_mm_node *stolen;
 
-       if (dev_priv->mm.stolen_base == 0)
+       if (!drm_mm_initialized(&dev_priv->mm.stolen))
                return NULL;
 
        DRM_DEBUG_KMS("creating preallocated stolen object: stolen_offset=%x, gtt_offset=%x, size=%x\n",