1From 7fc7a6264a02657b3623f1e591eb5effd76d5b02 Mon Sep 17 00:00:00 2001
2From: Jeffy Chen <jeffy.chen@rock-chips.com>
3Date: Mon, 26 Oct 2020 17:50:06 +0800
4Subject: [PATCH 37/79] HACK: backend-drm: Workaround atomic flip for BSP 4.4
5 kernel
6
7The Rockchip BSP 4.4 kernel might generate unexpected flip events
8when dpms changed.
9
10Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
11---
12 libweston/backend-drm/kms.c | 6 +++++-
13 1 file changed, 5 insertions(+), 1 deletion(-)
14
15diff --git a/libweston/backend-drm/kms.c b/libweston/backend-drm/kms.c
16index a3c55bd..cf37773 100644
17--- a/libweston/backend-drm/kms.c
18+++ b/libweston/backend-drm/kms.c
19@@ -1502,7 +1502,11 @@ atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
20
21 	drm_debug(b, "[atomic][CRTC:%u] flip processing started\n", crtc_id);
22 	assert(b->atomic_modeset);
23-	assert(output->atomic_complete_pending);
24+
25+	/* HACK: Disable this check sink the Rockchip BSP 4.4 kernel might
26+	 * generate unexpected flip events when dpms changed. */
27+	//assert(output->atomic_complete_pending);
28+
29 	output->atomic_complete_pending = false;
30
31 	drm_output_update_complete(output, flags, sec, usec);
32--
332.20.1
34
35