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a=openpgp-sha256; l=1164; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=Ogj1qgSBFy5LiaMGrph8HSRVcootU6FeEO747BTFj9E=; b=owGbwMvMwMXYbdNlx6SpcZXxtFoSQ9qUQysu/J/Xl5n/9o/EfmHLmdY1x3fJXa8q/t5631Izp 6VP4f30TkZjFgZGLgZZMUUWn4KWqTGbksM+7JhaDzOIlQlkCgMXpwBMRPg8B8NKPS4j53+nGRhP VBcpNN70edCVY/lnJcPcZSbfTc/NZDjqy6J4IKKOJ5lRyqf+pLljwNWcn8dbq5ta/jC3fL5Surt 8VnHwiZ8ube0uSdOfHZtUofj4yj2FJZ909eR959nxx9g9rdtcmORwy69fzvGuf/mlJ9ITLxRdKU /VyNt9e8HWnyJSNaJvsvvjVOZ/8xJcrea+Le6pdpiL04no7ZG5l+apXb1wf90jpyWPt1z035Z38 UmCspiUQ5HjJzXNXLbKp8oVKQ0yzQwbTWba5eanp9nPFBKUKtof79uV/nmO00QFK+krh9kFBW1Z lM+2PipLcPhrUlgXZKBucDBt5ZLW8y+WpX08IzaNs3cFAA== X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A With the introduction of the HDMI Connector framework the driver might end up creating the max_bpc property with min = max = 8. IGT insists that such properties carry the 'immutable' flag. Automatically set the flag if the driver asks for the max_bpc property with min == max. Fixes: aadb3e16b8f3 ("drm/connector: hdmi: Add output BPC to the connector state") Signed-off-by: Dmitry Baryshkov Acked-by: Maxime Ripard --- drivers/gpu/drm/drm_connector.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index ab6ab7ff7ea8..33847fd63628 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -2610,7 +2610,12 @@ int drm_connector_attach_max_bpc_property(struct drm_connector *connector, prop = connector->max_bpc_property; if (!prop) { - prop = drm_property_create_range(dev, 0, "max bpc", min, max); + u32 flags = 0; + + if (min == max) + flags |= DRM_MODE_PROP_IMMUTABLE; + + prop = drm_property_create_range(dev, flags, "max bpc", min, max); if (!prop) return -ENOMEM;