1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index d9e06e751523..c83c83b74bf4 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -532,8 +532,11 @@ static int i915_drm_freeze(struct drm_device *dev)
                  * for _thaw.
                  */
                 mutex_lock(&dev->mode_config.mutex);
-                for_each_crtc(dev, crtc)
+                for_each_crtc(dev, crtc) {
+                        mutex_lock(&crtc->mutex);
                         dev_priv->display.crtc_disable(crtc);
+                        mutex_unlock(&crtc->mutex);
+                }
                 mutex_unlock(&dev->mode_config.mutex);
 
                 intel_modeset_suspend_hw(dev);