diff --git a/doc/driver-model/UDM-serial.txt b/doc/driver-model/UDM-serial.txt
index da6d429a6d73a7aa74f50cda704d1d5e50846a64..279e941fc03b69d43f368add25c45711c1f0c874 100644
--- a/doc/driver-model/UDM-serial.txt
+++ b/doc/driver-model/UDM-serial.txt
@@ -84,18 +84,10 @@ III) Analysis of in-tree drivers
   during conversion. This driver is implemented in very universal manner,
   therefore it'll be necessary to properly design it's platform_data.
 
-  ns9750_serial.c
-  ---------------
-  Unmaintained port. Code got removed.
-
   opencores_yanu.c
   ----------------
   No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
 
-  s3c4510b_uart.c
-  ---------------
-  No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
-
   sandbox.c
   ---------
   No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
@@ -104,10 +96,6 @@ III) Analysis of in-tree drivers
   --------
   This is a complementary part of NS16550 UART driver, see above.
 
-  serial_clps7111.c
-  -----------------
-  No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
-
   serial_imx.c
   ------------
   No support for CONFIG_SERIAL_MULTI. Simple conversion possible. This driver
@@ -129,10 +117,6 @@ III) Analysis of in-tree drivers
   ------------
   No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
 
-  serial_netarm.c
-  ---------------
-  No support for CONFIG_SERIAL_MULTI. Simple conversion possible.
-
   serial_pl01x.c
   --------------
   No support for CONFIG_SERIAL_MULTI. Simple conversion possible, though this