check_connector_state might get called from unpin_work, which means that the mst removal function has to flush it, and it has to use for_each_intel_connector because it cannot check if connection_mutex is held.
Signed-off-by: Maarten Lankhorst <[email protected]> --- drivers/gpu/drm/i915/intel_display.c | 12 ++++++------ drivers/gpu/drm/i915/intel_dp_mst.c | 11 +++++++++++ drivers/gpu/drm/i915/intel_drv.h | 1 + 3 files changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 5d60b3a8f06c..6feb8c6ccb8c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3900,7 +3900,7 @@ static void page_flip_completed(struct intel_crtc *intel_crtc, struct intel_flip queue_work(dev_priv->wq, &work->unpin_work); } -static int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc) +int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct drm_i915_private *dev_priv = dev->dev_private; @@ -12458,16 +12458,16 @@ static void verify_wm_state(struct drm_crtc *crtc, static void verify_connector_state(struct drm_device *dev, struct drm_crtc *crtc) { - struct drm_connector *connector; + struct intel_connector *connector; - drm_for_each_connector(connector, dev) { - struct drm_encoder *encoder = connector->encoder; - struct drm_connector_state *state = connector->state; + for_each_intel_connector(dev, connector) { + struct drm_connector_state *state = connector->base.state; + struct drm_encoder *encoder = connector->base.encoder; if (state->crtc != crtc) continue; - intel_connector_verify_state(to_intel_connector(connector)); + intel_connector_verify_state(connector); I915_STATE_WARN(state->best_encoder != encoder, "connector's atomic encoder doesn't match legacy encoder\n"); diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 94b4e833dadd..ab24f3ea08bc 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -501,6 +501,7 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, { struct intel_connector *intel_connector = to_intel_connector(connector); struct drm_device *dev = connector->dev; + struct drm_crtc *crtc; intel_connector->unregister(intel_connector); @@ -518,6 +519,16 @@ static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, WARN(ret, "Disabling mst crtc failed with %i\n", ret); } + /* Ensure any hw state checker call is completed */ + for_each_crtc(dev, crtc) + intel_crtc_wait_for_pending_flips(crtc); + + /* + * Before removing the connector, make sure all work is flushed + * because it may traverse the connector list. + */ + flush_workqueue(to_i915(dev)->wq); + intel_connector_remove_from_fbdev(intel_connector); drm_connector_cleanup(connector); drm_modeset_unlock_all(dev); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 0ec81df35710..d2cfb50332be 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1145,6 +1145,7 @@ intel_wait_for_vblank_if_active(struct drm_device *dev, int pipe) if (crtc->active) intel_wait_for_vblank(dev, pipe); } +int intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc); u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc); -- 2.1.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
