of_overlay_phandle_mutex 106 drivers/of/overlay.c static DEFINE_MUTEX(of_overlay_phandle_mutex); of_overlay_phandle_mutex 110 drivers/of/overlay.c mutex_lock(&of_overlay_phandle_mutex); of_overlay_phandle_mutex 115 drivers/of/overlay.c mutex_unlock(&of_overlay_phandle_mutex);