gpu: drm: virtio: code cleanup

The fault handler code is commented since v4.2.
If there is no plan to enable the fault handler
code in future, we can remove this dead code.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180703153353.GA3375@jordon-HP-15-Notebook-PC
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/virtio/virtgpu_ttm.c b/drivers/gpu/drm/virtio/virtgpu_ttm.c
index 11f8ae5..b6f021c 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_ttm.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ttm.c
@@ -106,29 +106,6 @@ static void virtio_gpu_ttm_global_fini(struct virtio_gpu_device *vgdev)
        }
 }
 
-#if 0
-/*
- * Hmm, seems to not do anything useful.  Leftover debug hack?
- * Something like printing pagefaults to kernel log?
- */
-static struct vm_operations_struct virtio_gpu_ttm_vm_ops;
-static const struct vm_operations_struct *ttm_vm_ops;
-
-static int virtio_gpu_ttm_fault(struct vm_fault *vmf)
-{
-       struct ttm_buffer_object *bo;
-       struct virtio_gpu_device *vgdev;
-       int r;
-
-       bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
-       if (bo == NULL)
-               return VM_FAULT_NOPAGE;
-       vgdev = virtio_gpu_get_vgdev(bo->bdev);
-       r = ttm_vm_ops->fault(vmf);
-       return r;
-}
-#endif
-
 int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma)
 {
        struct drm_file *file_priv;
@@ -143,19 +120,8 @@ int virtio_gpu_mmap(struct file *filp, struct vm_area_struct *vma)
                return -EINVAL;
        }
        r = ttm_bo_mmap(filp, vma, &vgdev->mman.bdev);
-#if 0
-       if (unlikely(r != 0))
-               return r;
-       if (unlikely(ttm_vm_ops == NULL)) {
-               ttm_vm_ops = vma->vm_ops;
-               virtio_gpu_ttm_vm_ops = *ttm_vm_ops;
-               virtio_gpu_ttm_vm_ops.fault = &virtio_gpu_ttm_fault;
-       }
-       vma->vm_ops = &virtio_gpu_ttm_vm_ops;
-       return 0;
-#else
+
        return r;
-#endif
 }
 
 static int virtio_gpu_invalidate_caches(struct ttm_bo_device *bdev,