Revert "fbdev: msm: Signal fences in legacy display commit path"

This reverts commit c5bb0bd.

The commit leads to freezing the UI, kernel logs states:
[   17.920052] kgsl kgsl-3d0: kgsl: possible gpu syncpoint deadlock for context 4 timestamp 0
[   17.920172] kgsl kgsl-3d0:   context[4]: queue=16896, submit=12672, start=12672, retire=12672
[   17.920269] kgsl kgsl-3d0:   possible deadlock. Context 4 might be blocked for itself
[   17.920319] kgsl kgsl-3d0:   context[4]: submit times: 2.604 2.397 2.486 0.616 1.216 1.844 2.353
[   17.920401] kgsl kgsl-3d0:       pending events:
[   17.920485] kgsl kgsl-3d0:        [0] FENCE mdss mdss_fb_0: 2
[   17.920530] kgsl kgsl-3d0: --gpu syncpoint deadlock print end--

Signed-off-by: Albert I <kras@raphielgang.org>

drivers/video/fbdev/msm/mdss_fb.c

@@ -2,7 +2,7 @@
  * Core MDSS framebuffer driver.
  *
  * Copyright (C) 2007 Google Incorporated
- * Copyright (c) 2008-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2008-2019, The Linux Foundation. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -3336,7 +3336,6 @@ static int mdss_fb_pan_display_ex(struct fb_info *info,
 	mfd->msm_fb_backup.info = *info;
 	mfd->msm_fb_backup.disp_commit = *disp_commit;
 
-	atomic_inc(&mfd->mdp_sync_pt_data.commit_cnt);
 	atomic_inc(&mfd->commits_pending);
 	atomic_inc(&mfd->kickoff_pending);
 	wake_up_all(&mfd->commit_wait_q);
@@ -4440,7 +4439,7 @@ static int mdss_fb_handle_buf_sync_ioctl(struct msm_sync_pt_data *sync_pt_data,
 	if (IS_ERR_OR_NULL(retire_fence)) {
 		val += sync_pt_data->retire_threshold;
 		retire_fence = mdss_fb_sync_get_fence(
-			sync_pt_data->timeline_retire, "mdp-retire", val);
+			sync_pt_data->timeline, "mdp-retire", val);
 	}
 
 	if (IS_ERR_OR_NULL(retire_fence)) {