[Intel-gfx] [PATCH v6 1/2] drm/vrr: Set VRR capable prop only if it is attached to connector

[Manasi Navare <manasi.d.navare@intel.com>]

VRR capable property is not attached by default to the connector
It is attached only if VRR is supported.
So if the driver tries to call drm core set prop function without
it being attached that causes NULL dereference.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
---
 drivers/gpu/drm/drm_connector.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index a50c82bc2b2f..76a8c707c34b 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -2330,6 +2330,9 @@ EXPORT_SYMBOL(drm_connector_atomic_hdr_metadata_equal);
 void drm_connector_set_vrr_capable_property(
 		struct drm_connector *connector, bool capable)
 {
+	if (!connector->vrr_capable_property)
+		return;
+
 	drm_object_property_set_value(&connector->base,
 				      connector->vrr_capable_property,
 				      capable);
-- 
2.19.1