[Bug 84974] [VLV bisected] Screen goes blank on rotate using xrandr

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84974

--- Comment #11 from ws at xell.at ---
Reverting this single method call (which was added as part of the bisected
patch) from the 3.17.1 kernel makes rotation work again:

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index d8324c6..057b6be 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4609,7 +4609,6 @@ static void valleyview_modeset_global_resources(struct
drm_device *dev)

        if (req_cdclk != dev_priv->vlv_cdclk_freq)
                valleyview_set_cdclk(dev, req_cdclk);
-       modeset_update_crtc_power_domains(dev);
 }

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