drm/i915: check that we hold an RPM wakelock ref before we put it
authorImre Deak <imre.deak@intel.com>
Tue, 15 Dec 2015 18:10:36 +0000 (20:10 +0200)
committerImre Deak <imre.deak@intel.com>
Thu, 17 Dec 2015 14:36:52 +0000 (16:36 +0200)
With this change we have the corresponding wake lock checks in both the
rpm get and put functions.

v2-v3:
- unchanged
v4:
- keep the corresponding check in the get helper (Chris)
v5:
- add a note to the commit message that with this change we have the
  checks both in the rpm get and put functions (Joonas)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450203038-5150-9-git-send-email-imre.deak@intel.com
drivers/gpu/drm/i915/intel_runtime_pm.c

index df9a3f1..4c80d2a 100644 (file)
@@ -2286,6 +2286,7 @@ void intel_runtime_pm_put(struct drm_i915_private *dev_priv)
        struct drm_device *dev = dev_priv->dev;
        struct device *device = &dev->pdev->dev;
 
+       assert_rpm_wakelock_held(dev_priv);
        atomic_dec(&dev_priv->pm.wakeref_count);
 
        pm_runtime_mark_last_busy(device);