drm/i915: Fix error path in i915_drm_resume_early

If system resume fails, this may lead to a runtime PM wake reference
underflow used for runtime PM state checking.

Fixes: 1f814daca43a ("drm/i915: add support for checking if we hold an RPM reference")
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1460963062-13211-2-git-send-email-imre.deak@intel.com

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b7c7d77..219b707 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -842,11 +842,11 @@ static int i915_drm_resume_early(struct drm_device *dev)
            !(dev_priv->suspended_to_idle && dev_priv->csr.dmc_payload))
                intel_power_domains_init_hw(dev_priv, true);
 
+       enable_rpm_wakeref_asserts(dev_priv);
+
 out:
        dev_priv->suspended_to_idle = false;
 
-       enable_rpm_wakeref_asserts(dev_priv);
-
        return ret;
 }