diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8cda2ad19e26349051b86818a0b79c7212a0ca17..53ec6cb0ffdb83401388d5213a70b0b7465ac603 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6513,6 +6513,7 @@ void intel_release_load_detect_pipe(struct drm_connector *connector,
 			drm_framebuffer_unreference(old->release_fb);
 		}
 
+		mutex_unlock(&crtc->mutex);
 		return;
 	}