diff --git a/drivers/char/random.c b/drivers/char/random.c
index 6b75713..0a19d86 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -902,6 +902,7 @@
 	add_timer_randomness(disk->random, 0x100 + disk_devt(disk));
 	trace_add_disk_randomness(disk_devt(disk), ENTROPY_BITS(&input_pool));
 }
+EXPORT_SYMBOL_GPL(add_disk_randomness);
 #endif
 
 /*********************************************************************