4.2.8-ckt12 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Lyude <cpaul@xxxxxxxxxx>
commit a16b7658f4e0d4aec9bc3e75a5f0cc3f7a3a0422 upstream.
Since we need MST devices ready before we try to resume displays,
calling this after intel_display_resume() can result in some issues with
various laptop docks where the monitor won't turn back on after
suspending the system.
This order was originally changed in
commit e7d6f7d70829 ("drm/i915: resume MST after reading back hw state")
In order to fix some unclaimed register errors, however the actual cause
of those has since been fixed.
Signed-off-by: Lyude <cpaul@xxxxxxxxxx>
[danvet: Resolve conflicts with locking changes.]
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
[ kamal: backport to 4.2-stable: context ]
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9d42aeb..2188b7f 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -762,12 +762,12 @@ static int i915_drm_resume(struct drm_device *dev)
dev_priv->display.hpd_irq_setup(dev);
spin_unlock_irq(&dev_priv->irq_lock);
+ intel_dp_mst_resume(dev);
+
drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev, true);
drm_modeset_unlock_all(dev);
- intel_dp_mst_resume(dev);
-
/*
* ... but also need to make sure that hotplug processing
* doesn't cause havoc. Like in the driver load code we don't
--
2.7.4
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