The current code will call drm_connector_unregister() and drm_connector_cleanup() when the device is unbound. However, by then, there might still be some references held to that connector, including by the userspace that might still have the DRM device open.
Let's switch to a DRM-managed initialization to clean up after ourselves only once the DRM device has been last closed.
Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index e5b6e35f57f6..63d9a91f5038 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -255,12 +255,6 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) return connector_status_disconnected; }
-static void vc4_hdmi_connector_destroy(struct drm_connector *connector) -{ - drm_connector_unregister(connector); - drm_connector_cleanup(connector); -} - static int vc4_hdmi_connector_get_modes(struct drm_connector *connector) { struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); @@ -368,7 +362,6 @@ vc4_hdmi_connector_duplicate_state(struct drm_connector *connector) static const struct drm_connector_funcs vc4_hdmi_connector_funcs = { .detect = vc4_hdmi_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = vc4_hdmi_connector_destroy, .reset = vc4_hdmi_connector_reset, .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, @@ -386,10 +379,13 @@ static int vc4_hdmi_connector_init(struct drm_device *dev, struct drm_encoder *encoder = &vc4_hdmi->encoder.base; int ret;
- drm_connector_init_with_ddc(dev, connector, - &vc4_hdmi_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA, - vc4_hdmi->ddc); + ret = drmm_connector_init_with_ddc(dev, connector, + &vc4_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + vc4_hdmi->ddc); + if (ret) + return ret; + drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs);
/* @@ -2933,7 +2929,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
ret = vc4_hdmi_hotplug_init(vc4_hdmi); if (ret) - goto err_destroy_conn; + goto err_put_runtime_pm;
ret = vc4_hdmi_cec_init(vc4_hdmi); if (ret) @@ -2955,8 +2951,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) vc4_hdmi_cec_exit(vc4_hdmi); err_free_hotplug: vc4_hdmi_hotplug_exit(vc4_hdmi); -err_destroy_conn: - vc4_hdmi_connector_destroy(&vc4_hdmi->connector); err_put_runtime_pm: pm_runtime_put_sync(dev); pm_runtime_disable(dev); @@ -2998,7 +2992,6 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master, vc4_hdmi_audio_exit(vc4_hdmi); vc4_hdmi_cec_exit(vc4_hdmi); vc4_hdmi_hotplug_exit(vc4_hdmi); - vc4_hdmi_connector_destroy(&vc4_hdmi->connector);
pm_runtime_disable(dev);