Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Nivedita Swaminathan <nivedita.swaminathan@intel.com>,
        Imre Deak <imre.deak@intel.com>,
        Patrik Jakobsson <patrik.jakobsson@linux.intel.com>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: [PATCH 4.9 06/86] drm/i915: Always call to intel_display_set_init_power() in resume_early.
Date:   Fri, 16 Mar 2018 16:22:29 +0100
Message-Id: <20180316152317.652617970@linuxfoundation.org>
In-Reply-To: <20180316152317.167709497@linuxfoundation.org>
References: <20180316152317.167709497@linuxfoundation.org>
User-Agent: quilt/0.65
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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

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

From: Maarten Lankhorst <maarten.lankhorst@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.lankhorst@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104172
Link: https://patchwork.freedesktop.org/patch/msgid/20180116155324.75120-1-maarten.lankhorst@linux.intel.com
Fixes: bc87229f323e ("drm/i915/skl: enable PC9/10 power states during suspend-to-idle")
Cc: Nivedita Swaminathan <nivedita.swaminathan@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v4.5+
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit ac25dfed15d470d7f23dd817e965b54aa3f94a1e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@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
@@ -1703,6 +1703,8 @@ static int i915_drm_resume_early(struct
 	if (IS_BROXTON(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);
 
 	enable_rpm_wakeref_asserts(dev_priv);