--- zzzz-none-000/linux-3.10.107/include/linux/blk-iopoll.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/blk-iopoll.h	2021-02-04 17:41:59.000000000 +0000
@@ -43,6 +43,4 @@
 extern void blk_iopoll_enable(struct blk_iopoll *);
 extern void blk_iopoll_disable(struct blk_iopoll *);
 
-extern int blk_iopoll_enabled;
-
 #endif