Evaluating the requirement to use a limited RGB quantization range
involves a verification of the output format, among others, but this is
currently performed before actually computing the format, hence relying
on the old connector state.

Move the call to hdmi_is_limited_range() after hdmi_compute_config() to
ensure the verification is done on the updated output format.

Fixes: 027d43590649 ("drm/connector: hdmi: Add RGB Quantization Range to the connector state")
Reviewed-by: Dmitry Baryshkov <lumag@kernel.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
 drivers/gpu/drm/display/drm_hdmi_state_helper.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index bae7aa624f7db61cc7d5ff7a86a413938963543f..97cb4f29c4b5d88f4b6288bd93c6abb33bb7c17a 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -799,12 +799,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
 	if (!new_conn_state->crtc || !new_conn_state->best_encoder)
 		return 0;
 
-	new_conn_state->hdmi.is_limited_range = hdmi_is_limited_range(connector, new_conn_state);
-
 	ret = hdmi_compute_config(connector, new_conn_state, mode);
 	if (ret)
 		return ret;
 
+	new_conn_state->hdmi.is_limited_range = hdmi_is_limited_range(connector, new_conn_state);
+
 	ret = hdmi_generate_infoframes(connector, new_conn_state);
 	if (ret)
 		return ret;

-- 
2.49.0

On Tue, 27 May 2025 15:11:09 +0300, Cristian Ciocaltea wrote:
> Evaluating the requirement to use a limited RGB quantization range
> involves a verification of the output format, among others, but this is
> currently performed before actually computing the format, hence relying
> on the old connector state.
> 
> 
> [ ... ]

Acked-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime