target/linux/bcm27xx/patches-5.15/950-0439-drm-atomic-Don-t-fixup-modes-that-haven-t-been-reset.patch

   1 From ff6d3491b0c6d46eaac2e21e1e4ae85af8fa53ac Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 7 Jan 2021 16:30:55 +0000
   4 Subject: [PATCH] drm/atomic: Don't fixup modes that haven't been reset
   5
   6 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
   7 ---
   8  drivers/gpu/drm/drm_atomic_helper.c | 5 +++++
   9  1 file changed, 5 insertions(+)
  10
  11 --- a/drivers/gpu/drm/drm_atomic_helper.c
  12 +++ b/drivers/gpu/drm/drm_atomic_helper.c
  13 @@ -431,6 +431,11 @@ mode_fixup(struct drm_atomic_state *stat
  14                 new_crtc_state =
  15                         drm_atomic_get_new_crtc_state(state, new_conn_state->crtc);
  16
  17 +               if (!new_crtc_state->mode_changed &&
  18 +                   !new_crtc_state->connectors_changed) {
  19 +                       continue;
  20 +               }
  21 +
  22                 /*
  23                  * Each encoder has at most one connector (since we always steal
  24                  * it away), so we won't call ->mode_fixup twice.