There is no need to cast a typed pointer to a void pointer when calling
a function that accepts the latter.  Remove it, as the cast prevents
further compiler checks.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 {
        adev->debugfs_preempt =
                debugfs_create_file("amdgpu_preempt_ib", 0600,
-                                   adev->ddev->primary->debugfs_root,
-                                   (void *)adev, &fops_ib_preempt);
+                                   adev->ddev->primary->debugfs_root, adev,
+                                   &fops_ib_preempt);
        if (!(adev->debugfs_preempt)) {
                DRM_ERROR("unable to create amdgpu_preempt_ib debugsfs file\n");
                return -EIO;