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drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo 

Somehow fixes a misrendering + hang at GDM startup on my NVA8...

My first guess would have been stale TLB entries laying around that a new
bo then accidentally inherits.  That doesn't make a great deal of sense
however, as when we mapped the pages for the new bo the TLBs would've
gotten flushed anyway.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-02-28 14:22:12 +10:00
parent 3c0556e967
commit 7db2662325
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/nouveau/nouveau_bo.c
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@ -49,7 +49,10 @@ nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
DRM_ERROR("bo %p still attached to GEM object\n", bo);
nv10_mem_put_tile_region(dev, nvbo->tile, NULL);
nouveau_vm_put(&nvbo->vma);
if (nvbo->vma.node) {
nouveau_vm_unmap(&nvbo->vma);
nouveau_vm_put(&nvbo->vma);
}
kfree(nvbo);
}