This is a note to let you know that I've just added the patch titled
drm/i915: resume MST after reading back hw state
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-resume-mst-after-reading-back-hw-state.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From e7d6f7d708290da1b7c92f533444b042c79412e0 Mon Sep 17 00:00:00 2001
From: Dave Airlie <[email protected]>
Date: Mon, 8 Dec 2014 13:23:37 +1000
Subject: drm/i915: resume MST after reading back hw state
From: Dave Airlie <[email protected]>
commit e7d6f7d708290da1b7c92f533444b042c79412e0 upstream.
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 <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/i915_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -692,11 +692,12 @@ static int __i915_drm_thaw(struct drm_de
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
}
- 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
Patches currently in stable-queue which might be from [email protected] are
queue-3.18/drm-ttm-avoid-memory-allocation-from-shrinker-functions.patch
queue-3.18/drm-dp-retry-aux-transactions-32-times-v1.1.patch
queue-3.18/drm-i915-resume-mst-after-reading-back-hw-state.patch
queue-3.18/drm-fb_helper-move-deferred-fb-checking-into-restore-mode-v2.patch
queue-3.18/drm-dp-mst-remove-branches-before-dropping-the-reference.patch
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