leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/i915: resume MST after reading back hw state

Browse Source 
Otherwise the MST resume paths can hit DPMS paths
which hit state checker paths, which hit WARN_ON,
because the state checker is inconsistent with the
hw.

This fixes a bunch of WARN_ON's on resume after
undocking.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Dave Airlie 2014-12-08 13:23:37 +10:00 committed by Jani Nikula
parent 9cca306880
commit e7d6f7d708
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/i915_drv.c
View File

@ -706,11 +706,12 @@ static int i915_drm_resume(struct drm_device *dev)
dev_priv->display.hpd_irq_setup(dev); dev_priv->display.hpd_irq_setup(dev);
spin_unlock_irq(&dev_priv->irq_lock); spin_unlock_irq(&dev_priv->irq_lock);
intel_dp_mst_resume(dev);
drm_modeset_lock_all(dev); drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev, true); intel_modeset_setup_hw_state(dev, true);
drm_modeset_unlock_all(dev); drm_modeset_unlock_all(dev);
intel_dp_mst_resume(dev);
/* /*
* ... but also need to make sure that hotplug processing * ... but also need to make sure that hotplug processing
* doesn't cause havoc. Like in the driver load code we don't * doesn't cause havoc. Like in the driver load code we don't