diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 591d9c8107dd..64a72222a58c 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -992,7 +992,7 @@ SHOW(__bch_cache)
 			sum += INITIAL_PRIO - cached[i];
 
 		if (n)
-			do_div(sum, n);
+			sum = div64_u64(sum, n);
 
 		for (i = 0; i < ARRAY_SIZE(q); i++)
 			q[i] = INITIAL_PRIO - cached[n * (i + 1) /