From f6428705d86963cb49ce41e709afd02ff39e04a7 Mon Sep 17 00:00:00 2001
From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Tue, 10 Mar 2020 15:59:20 +0000
Subject: [PATCH] Fix for building libusb under Linux.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
---
 lib/libusb/libusb_global_linux.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/libusb/libusb_global_linux.h b/lib/libusb/libusb_global_linux.h
index 3753a9fba309..9886bd4486f5 100644
--- a/lib/libusb/libusb_global_linux.h
+++ b/lib/libusb/libusb_global_linux.h
@@ -77,4 +77,11 @@
 } while (0)
 #endif
 
+#ifndef TAILQ_FOREACH_SAFE
+#define	TAILQ_FOREACH_SAFE(var, head, field, tvar)			\
+	for ((var) = TAILQ_FIRST((head));				\
+	    (var) && ((tvar) = TAILQ_NEXT((var), field), 1);		\
+	    (var) = (tvar))
+#endif
+
 #endif					/* _LIBUSB_GLOBAL_LINUX_H_ */