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drm/radeon: don't init gpuvm if accel is disabled (v3) 

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
This commit is contained in:
Alex Deucher 2015-01-28 14:36:26 -05:00
parent 72edd83cc9
commit 544143f9e0
2 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/radeon/radeon_gem.c
View File

@ -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;
}

4
drivers/gpu/drm/radeon/radeon_kms.c
View File

@ -605,6 +605,7 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
return -ENOMEM;
}
if (rdev->accel_working) {
vm = &fpriv->vm;
r = radeon_vm_init(rdev, vm);
if (r) {
@ -612,7 +613,6 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
return r;
}
if (rdev->accel_working) {
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;
}