drm_atomic_helper_commit_hw_done() is the last thing (no plane cleanup
apparrently), so it's the entire function. And a nice comment
explaining why thw wait_for_flip_done is ahead, unlike the usual
sequence.
Aside, I think since the atomic helpers do track plane disabling now
separately this might no longer be a real problem since:
commit 21a01abbe32a3cbeb903378a24e504bfd9fe0648
Author: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Date: Mon Sep 4 12:48:37 2017 +0200
drm/atomic: Fix freeing connector/plane state too early by tracking commits, v3.
Plus the subsequent bugfixes of course, this was tricky to get right.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: NXP Linux Team <linux-imx@xxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
drivers/gpu/drm/imx/imx-drm-core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 36037b2e6564..8c209bd36780 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -80,6 +80,7 @@ static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
struct drm_plane_state *old_plane_state, *new_plane_state;
bool plane_disabling = false;
int i;
+ bool fence_cookie = dma_fence_begin_signalling();
drm_atomic_helper_commit_modeset_disables(dev, state);
@@ -110,6 +111,7 @@ static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
}
drm_atomic_helper_commit_hw_done(state);
+ dma_fence_end_signalling(fence_cookie);
}
static const struct drm_mode_config_helper_funcs imx_drm_mode_config_helpers = {
--
2.27.0
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