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openwrt/target/linux/brcm2708/patches-4.19/950-0364-drm-vc4-Don-t-wait...

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From 7f97b8d48bb2c2f67c8f7a81983e7223c91adfb0 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 5 Feb 2018 18:53:18 +0000
Subject: [PATCH 364/725] drm/vc4: Don't wait for vblank on fkms cursor
updates.
We don't use the same async update path between fkms and normal kms,
and the normal kms workaround ended up making us wait. This became a
larger problem in rpi-4.14.y, as the USB HID update rate throttling
got (accidentally?) dropped.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_kms.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_kms.c
+++ b/drivers/gpu/drm/vc4/vc4_kms.c
@@ -222,7 +222,8 @@ static int vc4_atomic_commit(struct drm_
* drm_atomic_helper_setup_commit() from auto-completing
* commit->flip_done.
*/
- state->legacy_cursor_update = false;
+ if (!vc4->firmware_kms)
+ state->legacy_cursor_update = false;
ret = drm_atomic_helper_setup_commit(state, nonblock);
if (ret)
return ret;