Am 29.01.2015 um 16:35 schrieb Alex Deucher:
If acceleration is disabled, it does not make sense
to init gpuvm since nothing will use it.  Moreover,
if radeon_vm_init() gets called it uses accel to try
and clear the pde tables, etc. which results in a bug.

v2: handle vm_fini as well

Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=88786

Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]

Reviewed-by: Christian König <[email protected]>

---
  drivers/gpu/drm/radeon/radeon_kms.c | 16 ++++++++--------
  1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c 
b/drivers/gpu/drm/radeon/radeon_kms.c
index 3cf9c1f..686411e 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -605,14 +605,14 @@ int radeon_driver_open_kms(struct drm_device *dev, struct 
drm_file *file_priv)
                        return -ENOMEM;
                }
- vm = &fpriv->vm;
-               r = radeon_vm_init(rdev, vm);
-               if (r) {
-                       kfree(fpriv);
-                       return r;
-               }
-
                if (rdev->accel_working) {
+                       vm = &fpriv->vm;
+                       r = radeon_vm_init(rdev, vm);
+                       if (r) {
+                               kfree(fpriv);
+                               return r;
+                       }
+
                        r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
                        if (r) {
                                radeon_vm_fini(rdev, vm);
@@ -668,9 +668,9 @@ void radeon_driver_postclose_kms(struct drm_device *dev,
                                        radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
                                radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
                        }
+                       radeon_vm_fini(rdev, vm);
                }
- radeon_vm_fini(rdev, vm);
                kfree(fpriv);
                file_priv->driver_priv = NULL;
        }

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