diff --git a/lib/libusb/libusb.h b/lib/libusb/libusb.h
--- a/lib/libusb/libusb.h
+++ b/lib/libusb/libusb.h
@@ -573,7 +573,8 @@
 int	libusb_handle_events_locked(libusb_context * ctx, struct timeval *tv);
 int	libusb_get_next_timeout(libusb_context * ctx, struct timeval *tv);
 void	libusb_set_pollfd_notifiers(libusb_context * ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data);
-const struct libusb_pollfd **libusb_get_pollfds(libusb_context * ctx);
+const struct libusb_pollfd **libusb_get_pollfds(libusb_context *ctx);
+void    libusb_free_pollfds(const struct libusb_pollfd **pollfds);
 
 /* Synchronous device I/O */
 
diff --git a/lib/libusb/libusb.3 b/lib/libusb/libusb.3
--- a/lib/libusb/libusb.3
+++ b/lib/libusb/libusb.3
@@ -775,6 +775,12 @@
 .Ft void
 .Fn libusb_hotplug_deregister_callback "libusb_context *ctx" "libusb_hotplug_callback_handle handle"
 This function unregisters a hotplug filter.
+.Pp
+.Ft void
+.Fn libusb_free_pollfds "const struct libusb_pollfd **pollfds"
+This function releases the memory storage in
+.Fa pollfds ,
+and is safe to call when the argument is NULL.
 .Sh LIBUSB VERSION 0.1 COMPATIBILITY
 The library is also compliant with LibUSB version 0.1.12.
 .Pp
diff --git a/lib/libusb/libusb10_io.c b/lib/libusb/libusb10_io.c
--- a/lib/libusb/libusb10_io.c
+++ b/lib/libusb/libusb10_io.c
@@ -842,3 +842,12 @@
 	/* get stream ID */
 	return (sxfer->stream_id);
 }
+
+void
+libusb_free_pollfds(const struct libusb_pollfd **pollfds)
+{
+	if (pollfds == NULL)
+		return;
+
+	free(pollfds);
+}