4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maarten Lankhorst <maarten.lankho...@linux.intel.com>

commit d13a8479f3584613b6aacbb793eae64578b8f69a upstream.

intel_power_domains_init_hw() calls set_init_power, but when using
runtime power management this call is skipped. This prevents hw readout
from taking place.

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104172
Link: 
https://patchwork.freedesktop.org/patch/msgid/20180116155324.75120-1-maarten.lankho...@linux.intel.com
Fixes: bc87229f323e ("drm/i915/skl: enable PC9/10 power states during 
suspend-to-idle")
Cc: Nivedita Swaminathan <nivedita.swaminat...@intel.com>
Cc: Imre Deak <imre.d...@intel.com>
Cc: Patrik Jakobsson <patrik.jakobs...@linux.intel.com>
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Cc: <sta...@vger.kernel.org> # v4.5+
Reviewed-by: Imre Deak <imre.d...@intel.com>
(cherry picked from commit ac25dfed15d470d7f23dd817e965b54aa3f94a1e)
Signed-off-by: Rodrigo Vivi <rodrigo.v...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/i915/i915_drv.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1806,6 +1806,8 @@ static int i915_drm_resume_early(struct
        if (IS_GEN9_LP(dev_priv) ||
            !(dev_priv->suspended_to_idle && dev_priv->csr.dmc_payload))
                intel_power_domains_init_hw(dev_priv, true);
+       else
+               intel_display_set_init_power(dev_priv, true);
 
        i915_gem_sanitize(dev_priv);
 


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