If these change (e.g. after a modeset following a fastboot), we need to
do a full mode set.

v2:
  - put under pipe_config check so we don't deref a null state (Jesse)

Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
---
 drivers/gpu/drm/i915/intel_display.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index cb96f11..c86eee6 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11230,8 +11230,18 @@ static int intel_crtc_set_config(struct drm_mode_set 
*set)
                                                   &modeset_pipes,
                                                   &prepare_pipes,
                                                   &disable_pipes);
-       if (IS_ERR(pipe_config))
+       if (IS_ERR(pipe_config)) {
                goto fail;
+       } else if (pipe_config) {
+               if (to_intel_crtc(set->crtc)->new_config->has_audio !=
+                   to_intel_crtc(set->crtc)->config.has_audio)
+                       config->mode_changed = true;
+
+               /* Force mode sets for any infoframe stuff */
+               if (to_intel_crtc(set->crtc)->new_config->has_infoframe ||
+                   to_intel_crtc(set->crtc)->config.has_infoframe)
+                       config->mode_changed = true;
+       }
 
        /* set_mode will free it in the mode_changed case */
        if (!config->mode_changed)
-- 
1.9.1

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