-diff -urN linux-2.4.25/drivers/atm/Makefile linux-2.4.25-atmdd/drivers/atm/Makefile
---- linux-2.4.25/drivers/atm/Makefile 2004-02-23 15:18:29.000000000 +0100
-+++ linux-2.4.25-atmdd/drivers/atm/Makefile 2004-02-29 22:51:26.000000000 +0100
-@@ -31,6 +31,7 @@
- obj-$(CONFIG_ATM_IDT77252) += suni.o
- endif
-
-+obj-$(CONFIG_ATM_DD) += atmdd.o
- obj-$(CONFIG_ATM_TCP) += atmtcp.o
- obj-$(CONFIG_ATM_FIRESTREAM) += firestream.o
- obj-$(CONFIG_ATM_LANAI) += lanai.o
-diff -urN linux-2.4.25/drivers/atm/Kconfig linux-2.4.25-atmdd/drivers/atm/Kconfig
---- linux-2.4.25/drivers/atm/Kcnfig 2003-08-25 13:44:41.000000000 +0200
-+++ linux-2.4.25-atmdd/drivers/atm/Kconfig 2004-02-29 22:52:59.000000000 +0100
-@@ -4,6 +4,14 @@
-
- menu "ATM drivers"
- depends on NETDEVICES && ATM
-+
-+config ATM_DD
-+ tristate "ATM loopback"
-+ depends on INET && ATM
-+ help
-+ This is an example atm driver. It does not require any actual ATM
-+ hardware. It supports AAL5 and AAL0. Frames are merely looped back
-+ to the sender on the same VC they were sent.
-
- config ATM_TCP
- tristate "ATM over TCP"
-diff -urN linux-2.4.25/drivers/atm/atmdd.c linux-2.4.25-atmdd/drivers/atm/atmdd.c
---- linux-2.4.25/drivers/atm/atmdd.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.25-atmdd/drivers/atm/atmdd.c 2004-02-29 22:58:11.000000000 +0100
+diff -urN linux-5.9/drivers.org/atm/atmdd.c linux-5.9/drivers/atm/atmdd.c
+--- linux-5.9/drivers.org/atm/atmdd.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-5.9/drivers/atm/atmdd.c 2020-11-03 13:31:48.120071319 +0100