From 9cebffdf0d9c2b045fa3ecde43a2c0014953087a Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 11 Oct 2022 18:51:33 +0200
Subject: drm/mgag200: Do not call drm_atomic_add_affected_planes()
Git-commit: 9cebffdf0d9c2b045fa3ecde43a2c0014953087a
Patch-mainline: v6.2-rc1
References: jsc#PED-1185

There's no need to add planes to the atomic state. Remove the call
to drm_atomic_add_affected_planes() from mgag200.

On full modesets, the DRM helpers already add a CRTC's planes to the
atomic state; see drm_atomic_helper_check_modeset(). There's no reason
to call drm_atomic_add_affected_planes() unconditionally in the CRTC's
atomic_check() in mgag200. It's also too late, as the atomic_check()
of the added planes will not be called before the commit.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011165136.469750-2-javierm@redhat.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/mgag200/mgag200_mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 5f7eb642f0c6..758629da95d9 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -601,7 +601,7 @@ int mgag200_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_st
 		}
 	}
 
-	return drm_atomic_add_affected_planes(new_state, crtc);
+	return 0;
 }
 
 void mgag200_crtc_helper_atomic_flush(struct drm_crtc *crtc, struct drm_atomic_state *old_state)
-- 
2.39.0