diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_bo_vm.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 3ba72dbdc4bd..74705f329d99 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -259,8 +259,8 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, read_lock(&bdev->vm_lock); bo = ttm_bo_vm_lookup_rb(bdev, vma->vm_pgoff, (vma->vm_end - vma->vm_start) >> PAGE_SHIFT); - if (likely(bo != NULL)) - ttm_bo_reference(bo); + if (likely(bo != NULL) && !kref_get_unless_zero(&bo->kref)) + bo = NULL; read_unlock(&bdev->vm_lock); if (unlikely(bo == NULL)) { |