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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [SNB regression] Power consumption goes postal after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54089#c72">Comment # 72</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [SNB regression] Power consumption goes postal after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=54089">bug 54089</a>
from <span class="vcard"><a class="email" href="mailto:koct9i@gmail.com" title="Konstantin Khlebnikov <koct9i@gmail.com>"> <span class="fn">Konstantin Khlebnikov</span></a>
</span></b>
<pre>Seems like this one helps, but I need more time to be sure.
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3607,6 +3607,8 @@ static void gen6_init_clock_gating(struct drm_device
*dev)
int pipe;
uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
+ gen6_gt_force_wake_get(dev_priv);
+
I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate);
I915_WRITE(ILK_DISPLAY_CHICKEN2,
@@ -3695,6 +3697,8 @@ static void gen6_init_clock_gating(struct drm_device
*dev)
cpt_init_clock_gating(dev);
gen6_check_mch_setup(dev);
+
+ gen6_gt_force_wake_put(dev_priv);
}</pre>
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