--- zzzz-none-000/linux-4.4.60/include/uapi/linux/types.h	2017-04-08 07:53:53.000000000 +0000
+++ jet-2400-727/linux-4.4.60/include/uapi/linux/types.h	2021-03-17 14:36:41.000000000 +0000
@@ -39,6 +39,8 @@
 typedef __u16 __bitwise __sum16;
 typedef __u32 __bitwise __wsum;
 
+typedef unsigned __bitwise __poll_t;
+
 /*
  * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
  * common 32/64-bit compat problems.