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drm/radeon: do not try to uselessly update virtual memory pagetable 

If a buffer is never bound to a virtual memory pagetable than don't try
to unbind it. Only drawback is that we don't update the pagetable when
unbinding the ib pool buffer which is fine because it only happens at
suspend or module unload/shutdown.

Fixes spurious messages about buffers without VM mappings. E.g.:
radeon 0000:01:00.0: bo ffff88020afac400 don't has a mapping in vm ffff88021ca2b900

Cc: stable@kernel.org
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jerome Glisse 2013-06-06 12:41:17 -04:00 committed by Alex Deucher
parent df63d3ecbc
commit 3813f5ca9a
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/radeon/radeon_gart.c
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@ -1197,11 +1197,13 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
int radeon_vm_bo_rmv(struct radeon_device *rdev,
struct radeon_bo_va *bo_va)
{
int r;
int r = 0;
mutex_lock(&rdev->vm_manager.lock);
mutex_lock(&bo_va->vm->mutex);
r = radeon_vm_bo_update_pte(rdev, bo_va->vm, bo_va->bo, NULL);
if (bo_va->soffset) {
r = radeon_vm_bo_update_pte(rdev, bo_va->vm, bo_va->bo, NULL);
}
mutex_unlock(&rdev->vm_manager.lock);
list_del(&bo_va->vm_list);
mutex_unlock(&bo_va->vm->mutex);