From: Daniel Vetter Date: Tue, 2 Jul 2013 08:48:31 +0000 (+0200) Subject: drm/i915: Don't try to tear down the stolen drm_mm if it's not there X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=446f8d81ca2d9cefb614e87f2fabcc996a9e4e7e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git drm/i915: Don't try to tear down the stolen drm_mm if it's not there Every other place properly checks whether we've managed to set up the stolen allocator at boot-up properly, with the exception of the cleanup code. Which results in an ugly *ERROR* Memory manager not clean. Delaying takedown at module unload time since the drm_mm isn't initialized at all. v2: While at it check whether the stolen drm_mm is initialized instead of the more obscure stolen_base == 0 check. v3: Fix up the logic. Also we need to keep the stolen_base check in i915_gem_object_create_stolen_for_preallocated since that can be called before stolen memory is fully set up. Spotted by Chris Wilson. v4: Readd the conversion in i915_gem_object_create_stolen_for_preallocated, the check is for the dev_priv->mm.gtt_space drm_mm, the stolen allocatot must already be initialized when calling that function (if we indeed have stolen memory). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=65953 Cc: Chris Wilson Tested-by: lu hua (v3) Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index f713294618fe..982d4732cecf 100644 --- 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",