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_txp.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c index 6a16b2798724..3f214b702c47 100644 --- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -335,16 +335,9 @@ vc4_txp_connector_detect(struct drm_connector *connector, bool force) return connector_status_connected; }
-static void vc4_txp_connector_destroy(struct drm_connector *connector) -{ - drm_connector_unregister(connector); - drm_connector_cleanup(connector); -} - static const struct drm_connector_funcs vc4_txp_connector_funcs = { .detect = vc4_txp_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = vc4_txp_connector_destroy, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, @@ -498,10 +491,10 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
drm_connector_helper_add(&txp->connector.base, &vc4_txp_connector_helper_funcs); - ret = drm_writeback_connector_init(drm, &txp->connector, - &vc4_txp_connector_funcs, - &vc4_txp_encoder_helper_funcs, - drm_fmts, ARRAY_SIZE(drm_fmts)); + ret = drmm_writeback_connector_init(drm, &txp->connector, + &vc4_txp_connector_funcs, + &vc4_txp_encoder_helper_funcs, + drm_fmts, ARRAY_SIZE(drm_fmts)); if (ret) return ret;
@@ -525,17 +518,8 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data) return 0; }
-static void vc4_txp_unbind(struct device *dev, struct device *master, - void *data) -{ - struct vc4_txp *txp = dev_get_drvdata(dev); - - vc4_txp_connector_destroy(&txp->connector.base); -} - static const struct component_ops vc4_txp_ops = { .bind = vc4_txp_bind, - .unbind = vc4_txp_unbind, };
static int vc4_txp_probe(struct platform_device *pdev)