[Intel-xe] [PATCH 2/4] drm/i915: Flush power delayed put when connector init failed

[Jani Nikula]

From: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>

When intel_dp_init_connector fails, some power wells used in dp aux
communication may not be completely disabled yet. This may result in a
null pointer dereference when icl_aux_pw_to_phy() is called from
icl_combo_phy_aux_power_well_disable() after the encoder and connector
are already freed.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Acked-by: Imre Deak <imre.deak at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221222201804.1380963-1-maarten.lankhorst@linux.intel.com
(cherry picked from commit f917130f19fe62c6688cc95ebebfafee3e005958)
---
 drivers/gpu/drm/i915/display/intel_dp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index eae92bb7f614..275f468b2364 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5627,6 +5627,7 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
 	return true;
 
 fail:
+	intel_display_power_flush_work(dev_priv);
 	drm_connector_cleanup(connector);
 
 	return false;
-- 
2.39.2