[Bug 58107] [sna gm45] Lockups in X on 2.20.15, flip-vs-dpms? race

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58107

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
Heh, there were a couple more important ones.

Something has broke in the fastboot patches, as least it is causing problems on
one of machines, which can be avoided with:

diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c
b/drivers/gpu/drm/i915/i915_
index 64a8079..78bd6f5 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -319,6 +319,8 @@ i915_gem_object_create_stolen_for_preallocated(struct
drm_de
        struct drm_i915_gem_object *obj;
        struct drm_mm_node *stolen;

+       return NULL;
+
        if (dev_priv->mm.stolen_base == 0)
                return NULL;

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