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drm/vrr: Set VRR capable prop only if it is attached to connector

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[ Upstream commit 62929726ef ]

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>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220225013055.9282-1-manasi.d.navare@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Manasi Navare 2022-02-24 17:30:54 -08:00 • committed by Greg Kroah-Hartman
commit 0ba557d330
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_connector.c
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@ -2155,6 +2155,9 @@ EXPORT_SYMBOL(drm_connector_attach_max_bpc_property);
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);