drm/i915: Fixup global gtt cleanup

The global gtt is setup up in 2 parts, so we need to be careful
with the cleanup. For consistency shovel it all into the ->cleanup
callback, like with ppgtt.

Noticed because it blew up in the out_gtt: cleanup code while
fiddling with the vgacon code.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 8 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index b9159ade5e85..27fe65ac5940 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1386,7 +1386,6 @@ cleanup_gem:
         i915_gem_context_fini(dev);
         mutex_unlock(&dev->struct_mutex);
         WARN_ON(dev_priv->mm.aliasing_ppgtt);
-        drm_mm_takedown(&dev_priv->gtt.base.mm);
 cleanup_irq:
         drm_irq_uninstall(dev);
 cleanup_gem_stolen:
@@ -1756,8 +1755,6 @@ out_mtrrfree:
         arch_phys_wc_del(dev_priv->gtt.mtrr);
         io_mapping_free(dev_priv->gtt.mappable);
 out_gtt:
-        list_del(&dev_priv->gtt.base.global_link);
-        drm_mm_takedown(&dev_priv->gtt.base.mm);
         dev_priv->gtt.base.cleanup(&dev_priv->gtt.base);
 out_regs:
         intel_uncore_fini(dev);
@@ -1846,7 +1843,6 @@ int i915_driver_unload(struct drm_device *dev)
                         i915_free_hws(dev);
         }
 
-        list_del(&dev_priv->gtt.base.global_link);
         WARN_ON(!list_empty(&dev_priv->vm_list));
 
         drm_vblank_cleanup(dev);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 931b906f292a..41e864ec5632 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1985,7 +1985,10 @@ static void gen6_gmch_remove(struct i915_address_space *vm)
 
         struct i915_gtt *gtt = container_of(vm, struct i915_gtt, base);
 
-        drm_mm_takedown(&vm->mm);
+        if (drm_mm_initialized(&vm->mm)) {
+                drm_mm_takedown(&vm->mm);
+                list_del(&vm->global_link);
+        }
         iounmap(gtt->gsm);
         teardown_scratch_page(vm->dev);
 }
@@ -2018,6 +2021,10 @@ static int i915_gmch_probe(struct drm_device *dev,
 
 static void i915_gmch_remove(struct i915_address_space *vm)
 {
+        if (drm_mm_initialized(&vm->mm)) {
+                drm_mm_takedown(&vm->mm);
+                list_del(&vm->global_link);
+        }
         intel_gmch_remove();
 }