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drm/i915: Keep malloc references to MST ports

Browse source 
So that the ports stay around until we've destroyed the connectors, in
order to ensure that we don't pass an invalid pointer to any MST helpers
once we introduce the new MST VCPI helpers.

Changes since v1:
* Move drm_dp_mst_get_port_malloc() to where we assign
  intel_connector->port - danvet

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@redhat.com>
Cc: Jerry Zuo <Jerry.Zuo@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Juston Li <juston.li@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190111005343.17443-11-lyude@redhat.com
This commit is contained in:
Lyude Paul 2019-01-10 19:53:33 -05:00
parent cfe9f90358
commit 79a47cd36c
2 changed files with 5 additions and 0 deletions
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4
drivers/gpu/drm/i915/intel_connector.c
View file

@ -95,6 +95,10 @@ void intel_connector_destroy(struct drm_connector *connector)
intel_panel_fini(&intel_connector->panel);
drm_connector_cleanup(connector);
if (intel_connector->port)
drm_dp_mst_put_port_malloc(intel_connector->port);
kfree(connector);
}

1
drivers/gpu/drm/i915/intel_dp_mst.c
View file

@ -457,6 +457,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
intel_connector->mst_port = intel_dp;
intel_connector->port = port;
drm_dp_mst_get_port_malloc(port);
connector = &intel_connector->base;
ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,