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drm/nouveau/vm: make each vma take a reference on its parent vm 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2013-05-07 08:36:33 +10:00
parent 51a506c012
commit 780194b1b9
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/nouveau/core/subdev/vm/base.c
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@ -320,7 +320,8 @@ nouveau_vm_get(struct nouveau_vm *vm, u64 size, u32 page_shift,
}
mutex_unlock(&nv_subdev(vmm)->mutex);
vma->vm = vm;
vma->vm = NULL;
nouveau_vm_ref(vm, &vma->vm, NULL);
vma->offset = (u64)vma->node->offset << 12;
vma->access = access;
return 0;
@ -342,6 +343,8 @@ nouveau_vm_put(struct nouveau_vma *vma)
nouveau_vm_unmap_pgt(vm, vma->node->type != vmm->spg_shift, fpde, lpde);
nouveau_mm_free(&vm->mm, &vma->node);
mutex_unlock(&nv_subdev(vmm)->mutex);
nouveau_vm_ref(NULL, &vma->vm, NULL);
}
int