As we may kick off a delayed workqueue task to switch of the VDD lines, we
need to complete that task prior to turning off the panel (which itself
depends upon VDD being off).

Signed-off-by: Chris Wilson <[email protected]>
Cc: Keith Packard <[email protected]>
---
 drivers/gpu/drm/i915/intel_dp.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f07652b..7c2b5e1 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1040,6 +1040,12 @@ static void ironlake_panel_vdd_off_sync(struct intel_dp 
*intel_dp)
        }
 }
 
+static void ironlake_panel_vdd_off_flush(struct intel_dp *intel_dp)
+{
+       cancel_delayed_work_sync(&intel_dp->panel_vdd_work);
+       ironlake_panel_vdd_off_sync(intel_dp);
+}
+
 static void ironlake_panel_vdd_work(struct work_struct *__work)
 {
        struct intel_dp *intel_dp = container_of(to_delayed_work(__work),
@@ -1128,6 +1134,7 @@ static void ironlake_edp_panel_off(struct intel_dp 
*intel_dp)
        DRM_DEBUG_KMS("Turn eDP power off\n");
 
        WARN(intel_dp->want_panel_vdd, "Cannot turn power off while VDD is 
on\n");
+       ironlake_panel_vdd_off_flush(intel_dp);
 
        pp = ironlake_get_pp_control(dev_priv);
        pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | 
EDP_BLC_ENABLE);
-- 
1.7.10

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