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 v3: handle bo_open/close as well

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

Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_gem.c | 6 ++++-- drivers/gpu/drm/radeon/radeon_kms.c | 16 ++++++++-------- 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index d0b4f7d..ac3c131 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -146,7 +146,8 @@ int radeon_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_pri struct radeon_bo_va *bo_va; int r;

- if (rdev->family < CHIP_CAYMAN) { + if ((rdev->family < CHIP_CAYMAN) || + (!rdev->accel_working)) { return 0; }

@@ -176,7 +177,8 @@ void radeon_gem_object_close(struct drm_gem_object *obj, struct radeon_bo_va *bo_va; int r;

- if (rdev->family < CHIP_CAYMAN) { + if ((rdev->family < CHIP_CAYMAN) || + (!rdev->accel_working)) { return; }

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; }