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path: root/drivers/gpu/drm/i915/intel_wakeref.h
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_wakeref.h')
-rw-r--r--drivers/gpu/drm/i915/intel_wakeref.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_wakeref.h b/drivers/gpu/drm/i915/intel_wakeref.h
index 5f0c972a80fb..affe4de3746b 100644
--- a/drivers/gpu/drm/i915/intel_wakeref.h
+++ b/drivers/gpu/drm/i915/intel_wakeref.h
@@ -152,6 +152,21 @@ intel_wakeref_unlock(struct intel_wakeref *wf)
}
/**
+ * intel_wakeref_unlock_wait: Wait until the active callback is complete
+ * @wf: the wakeref
+ *
+ * Waits for the active callback (under the @wf->mutex or another CPU) is
+ * complete.
+ */
+static inline void
+intel_wakeref_unlock_wait(struct intel_wakeref *wf)
+{
+ mutex_lock(&wf->mutex);
+ mutex_unlock(&wf->mutex);
+ flush_work(&wf->work);
+}
+
+/**
* intel_wakeref_is_active: Query whether the wakeref is currently held
* @wf: the wakeref
*