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 | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 592f85993a80..2d1f87f89994 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -363,7 +363,6 @@ 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 = drm_connector_cleanup, .reset = vc4_hdmi_connector_reset, .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, @@ -381,10 +380,13 @@ 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);
/* @@ -2931,7 +2933,7 @@ 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) @@ -2953,8 +2955,6 @@ 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: - drm_connector_cleanup(&vc4_hdmi->connector); err_put_runtime_pm: pm_runtime_put_sync(dev); pm_runtime_disable(dev); @@ -2996,7 +2996,6 @@ 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); - drm_connector_cleanup(&vc4_hdmi->connector);
pm_runtime_disable(dev);