182 files changed, 182 insertions, 0 deletions
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 9820e20993db..32d7ce430b02 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Serial driver for the amiga builtin port.
 *
diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index ce24182f8514..d569692b3bea 100644
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * TTY over Blackfin JTAG Communication
 *
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index f30f7a90995c..4f69f1043e26 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #undef  BLOCKMOVE
 #define Z_WAKE
 #undef  Z_EXT_CHARS_IN_BUFFER
diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index a1c7125cb968..9637f343deaf 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* ePAPR hypervisor byte channel device driver
 *
 * Copyright 2009-2011 Freescale Semiconductor, Inc.
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index 381e981dee06..061f10d71323 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2007 Google, Inc.
 * Copyright (C) 2012 Intel, Inc.
diff --git a/drivers/tty/hvc/hvc_bfin_jtag.c b/drivers/tty/hvc/hvc_bfin_jtag.c
index 31d6cc6a77af..24ff4c468e6d 100644
--- a/drivers/tty/hvc/hvc_bfin_jtag.c
+++ b/drivers/tty/hvc/hvc_bfin_jtag.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Console via Blackfin JTAG Communication
 *
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index a8d399188242..fed03a676f07 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Copyright (C) 2001 Anton Blanchard <anton@au.ibm.com>, IBM
 * Copyright (C) 2001 Paul Mackerras <paulus@au.ibm.com>, IBM
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
index 798c48d0d32c..74c9a20489db 100644
--- a/drivers/tty/hvc/hvc_console.h
+++ b/drivers/tty/hvc/hvc_console.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * hvc_console.h
 * Copyright (C) 2005 IBM Corporation
diff --git a/drivers/tty/hvc/hvc_dcc.c b/drivers/tty/hvc/hvc_dcc.c
index 82f240fb98f0..3e4fb8736d10 100644
--- a/drivers/tty/hvc/hvc_dcc.c
+++ b/drivers/tty/hvc/hvc_dcc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2010, 2014 The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 16331a90c1e8..4f361ba377cf 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * opal driver interface to hvc_console.c
 *
diff --git a/drivers/tty/hvc/hvc_rtas.c b/drivers/tty/hvc/hvc_rtas.c
index 08c87920b74a..c168bd5ffc26 100644
--- a/drivers/tty/hvc/hvc_rtas.c
+++ b/drivers/tty/hvc/hvc_rtas.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * IBM RTAS driver interface to hvc_console.c
 *
diff --git a/drivers/tty/hvc/hvc_tile.c b/drivers/tty/hvc/hvc_tile.c
index 9da1e842bbe9..cdd8fa774b56 100644
--- a/drivers/tty/hvc/hvc_tile.c
+++ b/drivers/tty/hvc/hvc_tile.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
diff --git a/drivers/tty/hvc/hvc_udbg.c b/drivers/tty/hvc/hvc_udbg.c
index 9cf573d06a29..d32929b0ce41 100644
--- a/drivers/tty/hvc/hvc_udbg.c
+++ b/drivers/tty/hvc/hvc_udbg.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * udbg interface to hvc_console.c
 *
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index a1d272ac82bb..287ccf682c84 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * vio driver interface to hvc_console.c
 *
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 5e87e4866bcb..e38a50dc58b2 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * xen console driver interface to hvc_console.c
 *
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index 63c29fe9d21f..fc5a12e56276 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * IBM eServer Hypervisor Virtual Console Server Device Driver
 * Copyright (C) 2003, 2004 IBM Corp.
diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
index 2e578d6433af..63ebc73565fc 100644
--- a/drivers/tty/hvc/hvsi.c
+++ b/drivers/tty/hvc/hvsi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Copyright (C) 2004 Hollis Blanchard <hollisb@us.ibm.com>, IBM
 *
diff --git a/drivers/tty/ipwireless/main.c b/drivers/tty/ipwireless/main.c
index 655c7948261c..3475e841ef5c 100644
--- a/drivers/tty/ipwireless/main.c
+++ b/drivers/tty/ipwireless/main.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * IPWireless 3G PCMCIA Network Driver
 *
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index 61ecdd6b2fc2..a598f79ee3fa 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
diff --git a/drivers/tty/metag_da.c b/drivers/tty/metag_da.c
index 82ccf3982b25..6c804966e092 100644
--- a/drivers/tty/metag_da.c
+++ b/drivers/tty/metag_da.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  dashtty.c - tty driver for Dash channels interface.
 *
diff --git a/drivers/tty/mips_ejtag_fdc.c b/drivers/tty/mips_ejtag_fdc.c
index 51678f3a8c25..f0a2f197c4db 100644
--- a/drivers/tty/mips_ejtag_fdc.c
+++ b/drivers/tty/mips_ejtag_fdc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * TTY driver for MIPS EJTAG Fast Debug Channels.
 *
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 7f3d4cb0341b..8223960abb68 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*****************************************************************************/
 /*
 *           moxa.c  -- MOXA Intellio family multiport serial driver.
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 2497be8a2190..4f4a54d16fc6 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *          mxser.c  -- MOXA Smartio/Industio family multiport serial driver.
 *
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 33530d8cb81d..df51d49f3dfb 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * n_gsm.c GSM 0710 tty multiplexor
 * Copyright (c) 2009/10 Intel Corporation
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index 7b2a466616d6..e2af7b1161f6 100644
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /* generic HDLC line discipline for Linux
 *
 * Written by Paul Fulghum paulkf@microgate.com
diff --git a/drivers/tty/n_null.c b/drivers/tty/n_null.c
index d63261c36e42..cf6dc0fa401a 100644
--- a/drivers/tty/n_null.c
+++ b/drivers/tty/n_null.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/tty.h>
diff --git a/drivers/tty/n_r3964.c b/drivers/tty/n_r3964.c
index 305b6490d405..d18411500b1a 100644
--- a/drivers/tty/n_r3964.c
+++ b/drivers/tty/n_r3964.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /* r3964 linediscipline for linux
 *
 * -----------------------------------------------------------
diff --git a/drivers/tty/n_tracerouter.c b/drivers/tty/n_tracerouter.c
index ac5716979bc1..717d0c111b72 100644
--- a/drivers/tty/n_tracerouter.c
+++ b/drivers/tty/n_tracerouter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  n_tracerouter.c - Trace data router through tty space
 *
diff --git a/drivers/tty/n_tracesink.c b/drivers/tty/n_tracesink.c
index 4616870a6b1b..f90709495c2f 100644
--- a/drivers/tty/n_tracesink.c
+++ b/drivers/tty/n_tracesink.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  n_tracesink.c - Trace data router and sink path through tty space.
 *
diff --git a/drivers/tty/n_tracesink.h b/drivers/tty/n_tracesink.h
index a68bb44f1ef5..2c9efd32f41b 100644
--- a/drivers/tty/n_tracesink.h
+++ b/drivers/tty/n_tracesink.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  n_tracesink.h - Kernel driver API to route trace data in kernel space.
 *
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index bdf0e6e89991..385b6a5161b2 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /*
 * n_tty.c --- implements the N_TTY line discipline.
 *
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index 39b3723a32a6..ec3e1b26b616 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
 * nozomi.c  -- HSDPA driver Broadband Wireless Data Card - Globe Trotter
 *
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 20d79a6007d5..59cd4b218218 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
 * RocketPort device driver for Linux
 *
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 4d662d1f4784..2aece10ef912 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2016-2017 Linaro Ltd., Rob Herring <robh@kernel.org>
 *
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index 5b09ce920117..57ff05ec5e46 100644
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2016-2017 Linaro Ltd., Rob Herring <robh@kernel.org>
 *
diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c
index 804632b4a929..32b3acf8150a 100644
--- a/drivers/tty/serial/21285.c
+++ b/drivers/tty/serial/21285.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for the serial port on the 21285 StrongArm-110 core logic chip.
 *
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index b2bdc35f7495..36e9ae190fc0 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for 8250/16550-type serial ports
 *
diff --git a/drivers/tty/serial/8250/8250_accent.c b/drivers/tty/serial/8250/8250_accent.c
index 522aeae05192..2c11bc1f49c2 100644
--- a/drivers/tty/serial/8250/8250_accent.c
+++ b/drivers/tty/serial/8250/8250_accent.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 2005 Russell King.
 *  Data taken from include/asm-i386/serial.h
diff --git a/drivers/tty/serial/8250/8250_acorn.c b/drivers/tty/serial/8250/8250_acorn.c
index 402dfdd4940e..5395343fcf15 100644
--- a/drivers/tty/serial/8250/8250_acorn.c
+++ b/drivers/tty/serial/8250/8250_acorn.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  linux/drivers/serial/acorn.c
 *
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c
index 33a801353114..c468bcc4e638 100644
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Serial Port driver for Aspeed VUART device
 *
diff --git a/drivers/tty/serial/8250/8250_bcm2835aux.c b/drivers/tty/serial/8250/8250_bcm2835aux.c
index a23c7da42ea8..242ec1883768 100644
--- a/drivers/tty/serial/8250/8250_bcm2835aux.c
+++ b/drivers/tty/serial/8250/8250_bcm2835aux.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Serial port driver for BCM2835AUX UART
 *
diff --git a/drivers/tty/serial/8250/8250_boca.c b/drivers/tty/serial/8250/8250_boca.c
index a63b5998e383..4123eb887020 100644
--- a/drivers/tty/serial/8250/8250_boca.c
+++ b/drivers/tty/serial/8250/8250_boca.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 2005 Russell King.
 *  Data taken from include/asm-i386/serial.h
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index ccfc42ca846d..08db331c9718 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Universal/legacy driver for 8250/16550-type serial ports
 *
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
index 26f17456b0d7..fe9259330886 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * 8250_dma.c - DMA Engine API support for 8250.c
 *
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 10b0aca8ae19..3b4bc4dd0a89 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Synopsys DesignWare 8250 driver.
 *
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index af72ec32e404..224f8c16612e 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Early serial console for 8250/16550 devices
 *
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index 0b6381214917..36355b365c51 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Renesas Emma Mobile 8250 driver
 *
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index c55624703fdf..4d668e202b56 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Probe module for 8250/16550-type Exar chips PCI serial ports.
 *
diff --git a/drivers/tty/serial/8250/8250_exar_st16c554.c b/drivers/tty/serial/8250/8250_exar_st16c554.c
index 3a7cb8262bb9..0b1318b38cdf 100644
--- a/drivers/tty/serial/8250/8250_exar_st16c554.c
+++ b/drivers/tty/serial/8250/8250_exar_st16c554.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Written by Paul B Schroeder < pschroeder "at" uplogix "dot" com >
 *  Based on 8250_boca.
diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index c41cbb52f1fe..894763f2c69e 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Probe for F81216A LPC to 4 UART
 *
diff --git a/drivers/tty/serial/8250/8250_fourport.c b/drivers/tty/serial/8250/8250_fourport.c
index 4045180a8cfc..1d8e936a18b4 100644
--- a/drivers/tty/serial/8250/8250_fourport.c
+++ b/drivers/tty/serial/8250/8250_fourport.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 2005 Russell King.
 *  Data taken from include/asm-i386/serial.h
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
index 910bfee5a88b..dafe7aa081b3 100644
--- a/drivers/tty/serial/8250/8250_fsl.c
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/serial_reg.h>
 #include <linux/serial_8250.h>
diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index df2931e1e086..8eea662d6987 100644
--- a/drivers/tty/serial/8250/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *      Serial Device Initialisation for Lasi/Asp/Wax/Dino
 *
diff --git a/drivers/tty/serial/8250/8250_hp300.c b/drivers/tty/serial/8250/8250_hp300.c
index 115190b7962a..3012ea03d22c 100644
--- a/drivers/tty/serial/8250/8250_hp300.c
+++ b/drivers/tty/serial/8250/8250_hp300.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for the 98626/98644/internal serial interface on hp300/hp400
 * (based on the National Semiconductor INS8250/NS16550AF/WD16C552 UARTs)
diff --git a/drivers/tty/serial/8250/8250_hub6.c b/drivers/tty/serial/8250/8250_hub6.c
index 27124e21eb96..f75c89ec7ebc 100644
--- a/drivers/tty/serial/8250/8250_hub6.c
+++ b/drivers/tty/serial/8250/8250_hub6.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 2005 Russell King.
 *  Data taken from include/asm-i386/serial.h
diff --git a/drivers/tty/serial/8250/8250_ingenic.c b/drivers/tty/serial/8250/8250_ingenic.c
index 464389b28900..5c993a3af653 100644
--- a/drivers/tty/serial/8250/8250_ingenic.c
+++ b/drivers/tty/serial/8250/8250_ingenic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Copyright (C) 2010 Lars-Peter Clausen <lars@metafoo.de>
 * Copyright (C) 2015 Imagination Technologies
diff --git a/drivers/tty/serial/8250/8250_lpc18xx.c b/drivers/tty/serial/8250/8250_lpc18xx.c
index 99cd478851ff..e34011535a6a 100644
--- a/drivers/tty/serial/8250/8250_lpc18xx.c
+++ b/drivers/tty/serial/8250/8250_lpc18xx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Serial port driver for NXP LPC18xx/43xx UART
 *
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index 7dddd7e6a01c..f4b596da0a3d 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * 8250_lpss.c - Driver for UART on Intel Braswell and various other Intel SoCs
 *
diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c
index b8f0b7f70d5a..b6d326cab3ca 100644
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * 8250_mid.c - Driver for UART on Intel Penwell and various other Intel SOCs
 *
diff --git a/drivers/tty/serial/8250/8250_moxa.c b/drivers/tty/serial/8250/8250_moxa.c
index d5069b2d4d79..da18dd62e608 100644
--- a/drivers/tty/serial/8250/8250_moxa.c
+++ b/drivers/tty/serial/8250/8250_moxa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * 8250_moxa.c - MOXA Smartio/Industio MUE multiport serial driver.
 *
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index fef9823d7b4c..34e0f5fc00ee 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Mediatek 8250 driver.
 *
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 1222c005fb98..851e5eb19b98 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Serial Port driver for Open Firmware platform devices
 *
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 4938d338e01f..bd40ba402410 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * 8250-core based driver for the OMAP internal UART
 *
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index a6bf59d8b1d6..c8d6a11fdb51 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Probe module for 8250/16550-type PCI serial ports.
 *
diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index 34f05ed78b68..b556f37b9ba9 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Probe for 8250/16550-type ISAPNP serial ports.
 *
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index d0d171bf6b58..745eda69c918 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Base port operations for 8250/16550-type serial ports
 *
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index 4d68731af534..5ca660c04a9d 100644
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  drivers/tty/serial/8250/8250_pxa.c -- driver for PXA on-board UARTS
 *  Copyright:  (C) 2013 Sergei Ianovich <ynvich@gmail.com>
diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index 8a10b10e27aa..b4114f57d23a 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
 *
diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c
index 933c2688dd7e..9963a766dcfb 100644
--- a/drivers/tty/serial/8250/serial_cs.c
+++ b/drivers/tty/serial/8250/serial_cs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
 /*======================================================================
    A driver for PCMCIA serial devices
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index 0475f5d261ce..ef444aff77c5 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * altera_jtaguart.c -- Altera JTAG UART driver
 *
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index a0360e640837..f1efcfc65a1e 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * altera_uart.c -- Altera UART driver
 *
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 9ec4b8d2879f..a64a20c8e28b 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for AMBA serial ports
 *
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 04f353452a7a..dac3a1138e45 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for AMBA serial ports
 *
diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c
index dd60ed96a0ad..60cd133ffbbc 100644
--- a/drivers/tty/serial/apbuart.c
+++ b/drivers/tty/serial/apbuart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Driver for GRLIB serial ports (APBUART)
 *
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index decc7f3c1ab2..15cd1a3ea6bf 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Atheros AR933X SoC built-in UART driver
 *
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 77fe306690c4..54d979ba4657 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * ARC On-Chip(fpga) UART Driver
 *
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 68d8685e5a50..a4baa0fdaa16 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for Atmel AT91 Serial ports
 *  Copyright (C) 2003 Rick Bronson
diff --git a/drivers/tty/serial/atmel_serial.h b/drivers/tty/serial/atmel_serial.h
index bd2560502f3c..b4e0e57a0a79 100644
--- a/drivers/tty/serial/atmel_serial.h
+++ b/drivers/tty/serial/atmel_serial.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * include/linux/atmel_serial.h
 *
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index 8c48c3784831..474652d26c71 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index 6525378a75b6..3401d9d36786 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Blackfin On-Chip Sport Emulated UART Driver
 *
diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
index e4510ea135ce..6d9237bb7192 100644
--- a/drivers/tty/serial/bfin_sport_uart.h
+++ b/drivers/tty/serial/bfin_sport_uart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Blackfin On-Chip Sport Emulated UART Driver
 *
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index de5262a46b62..ca8e42ec4aaf 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Blackfin On-Chip Serial Driver
 *
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index ac1328629baa..64d58f2765cc 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for CLPS711x serial ports
 *
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart.h b/drivers/tty/serial/cpm_uart/cpm_uart.h
index 0ad027b95873..79f1d1128c5a 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart.h
+++ b/drivers/tty/serial/cpm_uart/cpm_uart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Driver for CPM (SCC/SMC) serial ports
 *
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 9ac142cfc1f1..a98d3ab37fac 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for CPM (SCC/SMC) serial ports; core driver
 *
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
index 6d3b22e93246..31e952fd98d0 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for CPM (SCC/SMC) serial ports; CPM1 definitions
 *
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
index f46d2ca87209..84f7c8d32ab3 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for CPM (SCC/SMC) serial ports; CPM2 definitions
 *
diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c
index 02ad6953b167..c38a16381ff3 100644
--- a/drivers/tty/serial/digicolor-usart.c
+++ b/drivers/tty/serial/digicolor-usart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for Conexant Digicolor serial ports (USART)
 *
diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c
index ff465ff43577..7b57e840e255 100644
--- a/drivers/tty/serial/dz.c
+++ b/drivers/tty/serial/dz.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * dz.c: Serial port driver for DECstations equipped
 *       with the DZ chipset.
diff --git a/drivers/tty/serial/earlycon-arm-semihost.c b/drivers/tty/serial/earlycon-arm-semihost.c
index 6bbeb699777c..84780c17a889 100644
--- a/drivers/tty/serial/earlycon-arm-semihost.c
+++ b/drivers/tty/serial/earlycon-arm-semihost.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2012 ARM Ltd.
 * Author: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index 98928f082d87..00d24fd211c0 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2014 Linaro Ltd.
 * Author: Rob Herring <robh@kernel.org>
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index 9fff25be87f9..d6b5e5463746 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #if defined(CONFIG_SERIAL_EFM32_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
 #endif
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 73d6a7c3874e..6652af2be6fc 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Freescale lpuart serial port driver
 *
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index fe92d74f4ea5..a8fd690fbf29 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * icom.c
  *
diff --git a/drivers/tty/serial/icom.h b/drivers/tty/serial/icom.h
index c8029e0025c9..da6a38967d2f 100644
--- a/drivers/tty/serial/icom.h
+++ b/drivers/tty/serial/icom.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * icom.h
 *
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 596b738ec122..7075184fa25b 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /****************************************************************************
 *
 * Driver for the IFX 6x60 spi modem.
diff --git a/drivers/tty/serial/ifx6x60.h b/drivers/tty/serial/ifx6x60.h
index 4fbddc297839..a5346e7672c0 100644
--- a/drivers/tty/serial/ifx6x60.h
+++ b/drivers/tty/serial/ifx6x60.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /****************************************************************************
 *
 * Driver for the IFX spi modem.
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 1b04ef5925ef..9d3a19b8b69a 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Driver for Motorola/Freescale IMX serial ports
 *
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index 906ee770ff4a..fcc4bc85dab4 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 43d7d32eb150..8804faad5294 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
diff --git a/drivers/tty/serial/ip22zilog.c b/drivers/tty/serial/ip22zilog.c
index 7ddddb4c3844..8c810733df3d 100644
--- a/drivers/tty/serial/ip22zilog.c
+++ b/drivers/tty/serial/ip22zilog.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for Zilog serial chips found on SGI workstations and
 * servers.  This driver could actually be made more generic.
diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h
index 0b79b87df47d..588080b05b07 100644
--- a/drivers/tty/serial/jsm/jsm.h
+++ b/drivers/tty/serial/jsm/jsm.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /************************************************************************
 * Copyright 2003 Digi International (www.digi.com)
 *
diff --git a/drivers/tty/serial/jsm/jsm_cls.c b/drivers/tty/serial/jsm/jsm_cls.c
index 4eb12a9cae76..74793234e002 100644
--- a/drivers/tty/serial/jsm/jsm_cls.c
+++ b/drivers/tty/serial/jsm/jsm_cls.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Copyright 2003 Digi International (www.digi.com)
 *      Scott H Kilau <Scott_Kilau at digi dot com>
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index 102d499814ac..0ede8673f5be 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /************************************************************************
 * Copyright 2003 Digi International (www.digi.com)
 *
diff --git a/drivers/tty/serial/jsm/jsm_neo.c b/drivers/tty/serial/jsm/jsm_neo.c
index c6fdd6369534..b28a0a478d64 100644
--- a/drivers/tty/serial/jsm/jsm_neo.c
+++ b/drivers/tty/serial/jsm/jsm_neo.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /************************************************************************
 * Copyright 2003 Digi International (www.digi.com)
 *
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index b34def0a3fb3..251e00ea6b44 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /************************************************************************
 * Copyright 2003 Digi International (www.digi.com)
 *
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index 117df151627d..b908d4a24de5 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * KGDB NMI serial console
 *
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index a260cde743e2..62d162ae7610 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Based on the same principle as kgdboe using the NETPOLL api, this
 * driver uses a console polling api to implement a gdb serial inteface
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 22df94f107e5..868abff3db32 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
 *
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index cea57ff32c33..8b58256ec776 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * High Speed Serial Ports on NXP LPC32xx SoC
 *
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 0bc548adae52..62fdeabf8fb6 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  m32r_sio.c
 *
diff --git a/drivers/tty/serial/m32r_sio_reg.h b/drivers/tty/serial/m32r_sio_reg.h
index 4671473793e3..0fd9727edec3 100644
--- a/drivers/tty/serial/m32r_sio_reg.h
+++ b/drivers/tty/serial/m32r_sio_reg.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /*
 * m32r_sio_reg.h
 *
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index f691f3cdb5b1..ac88fc9ebc9c 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *
 *  Copyright (C) 2008 Christian Pellegrin <chripell@evolware.org>
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 9dfedbe6c071..bd626ec325d5 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Maxim (Dallas) MAX3107/8/9, MAX14830 serial driver
 *
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index 02eb32217685..9c779768bd16 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /****************************************************************************/
 /*
diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c
index e72ea61c70db..9387b2c745a0 100644
--- a/drivers/tty/serial/men_z135_uart.c
+++ b/drivers/tty/serial/men_z135_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * MEN 16z135 High Speed UART
 *
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 95d242a7dae1..fe2d12d69efe 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Based on meson_uart.c, by AMLOGIC, INC.
 *
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 791c4c74f6d6..1c1febdf60ce 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for the PSC of the Freescale MPC52xx PSCs configured as UARTs.
 *
diff --git a/drivers/tty/serial/mps2-uart.c b/drivers/tty/serial/mps2-uart.c
index 492ec4b375a0..5d789b584bc5 100644
--- a/drivers/tty/serial/mps2-uart.c
+++ b/drivers/tty/serial/mps2-uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * MPS2 UART driver
 *
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 67ffecc50e42..21b28d8e3c02 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Generic driver for the MPSC (UART mode) on Marvell parts (e.g., GT64240,
 * GT64260, MV64340, MV64360, GT96100, ... ).
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 1db79ee8a886..76649fea8f6f 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for msm7k serial device and console
 *
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index a78983734825..14a299688582 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 ** mux.c:
 **      serial driver for the Mux console found in some PA-RISC servers.
diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
index 85eb5c86d177..79926a4fa565 100644
--- a/drivers/tty/serial/mvebu-uart.c
+++ b/drivers/tty/serial/mvebu-uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * ***************************************************************************
 * Marvell Armada-3700 Serial Driver
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index be94246b6fcc..2b2b082efb9c 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Application UART driver for:
 *      Freescale STMP37XX/STMP378X
diff --git a/drivers/tty/serial/netx-serial.c b/drivers/tty/serial/netx-serial.c
index 207a0a032ed1..4201938e8aa3 100644
--- a/drivers/tty/serial/netx-serial.c
+++ b/drivers/tty/serial/netx-serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
 *
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 47ba9177a714..b3bba7a67ec4 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Driver for OMAP-UART controller.
 * Based on drivers/serial/8250.c
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index b9c859365334..93fa3095a775 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Actions Semi Owl family serial console
 *
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index d9123f995705..e2c04a3334da 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
 *
diff --git a/drivers/tty/serial/pic32_uart.c b/drivers/tty/serial/pic32_uart.c
index 00a33eb859d3..9f55c30d1aa6 100644
--- a/drivers/tty/serial/pic32_uart.c
+++ b/drivers/tty/serial/pic32_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * PIC32 Integrated Serial Driver.
 *
diff --git a/drivers/tty/serial/pic32_uart.h b/drivers/tty/serial/pic32_uart.h
index ec379da55ebb..43dc168dffd7 100644
--- a/drivers/tty/serial/pic32_uart.h
+++ b/drivers/tty/serial/pic32_uart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * PIC32 Integrated Serial Driver.
 *
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 6ccdd018fb45..3afba70022b4 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Driver for PowerMac Z85c30 based ESCC cell found in the
 * "macio" ASICs of various PowerMac models
diff --git a/drivers/tty/serial/pnx8xxx_uart.c b/drivers/tty/serial/pnx8xxx_uart.c
index a05508a3e1a7..a014de66e34e 100644
--- a/drivers/tty/serial/pnx8xxx_uart.c
+++ b/drivers/tty/serial/pnx8xxx_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * UART driver for PNX8XXX SoCs
 *
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 905631df1f8b..dd82ecb7c25d 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Based on drivers/serial/8250.c by Russell King.
 *
diff --git a/drivers/tty/serial/rp2.c b/drivers/tty/serial/rp2.c
index 056f91b3a4ca..2108bf34ff90 100644
--- a/drivers/tty/serial/rp2.c
+++ b/drivers/tty/serial/rp2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver for Comtrol RocketPort EXPRESS/INFINITY cards
 *
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c
index 75bd1e058b87..abb64ab11116 100644
--- a/drivers/tty/serial/sa1100.c
+++ b/drivers/tty/serial/sa1100.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for SA11x0 serial ports
 *
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 8aca18c4cdea..3a2923cef142 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Driver core for Samsung SoC onboard UARTs.
 *
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h
index 965199b6c16f..b0461c096d0a 100644
--- a/drivers/tty/serial/samsung.h
+++ b/drivers/tty/serial/samsung.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #ifndef __SAMSUNG_H
 #define __SAMSUNG_H
diff --git a/drivers/tty/serial/sb1250-duart.c b/drivers/tty/serial/sb1250-duart.c
index 041625cc24bb..f3d5b4ebb9d5 100644
--- a/drivers/tty/serial/sb1250-duart.c
+++ b/drivers/tty/serial/sb1250-duart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *      Support for the asynchronous serial interface (DUART) included
 *      in the BCM1250 and derived System-On-a-Chip (SOC) devices.
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index ca54ce074a5f..f1e216e714ee 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * SC16IS7xx tty serial driver - Copyright (C) 2014 GridPoint
 * Author: Jon Ringle <jringle@gridpoint.com>
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index ba43ed159b6a..a470dbf28c10 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  NXP (Philips) SCC+++(SCN+++) serial driver
 *
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index cf9b736f26f8..fae65e76a9f3 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * serial_tegra.c
 *
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index cdac01fe11ca..ab1742805719 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver core for serial ports
 *
diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c
index 57f152394af5..9a894e899876 100644
--- a/drivers/tty/serial/serial_ks8695.c
+++ b/drivers/tty/serial/serial_ks8695.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for KS8695 serial ports
 *
diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index d2da6aa7f27d..302dda18fcbd 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Helpers for controlling modem lines via GPIO
 *
diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h
index fa000bcff217..219eba0223bb 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.h
+++ b/drivers/tty/serial/serial_mctrl_gpio.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Helpers for controlling modem lines via GPIO
 *
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index f80fead6c5fc..256c61d1c6a6 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Derived from many drivers using generic_serial interface,
 * especially serial_tx3912.c by Steven J. Hill and r39xx_serial.c
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index d5e07ddae523..af940495addf 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * SuperH on-chip serial module support.  (SCI with no FIFO / with FIFO)
 *
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 684cb8dd8050..3e3ea07c54c0 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Driver for CSR SiRFprimaII onboard UARTs.
 *
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
index 43756bd9111c..6d6251526631 100644
--- a/drivers/tty/serial/sirfsoc_uart.h
+++ b/drivers/tty/serial/sirfsoc_uart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Drivers for CSR SiRFprimaII onboard UARTs.
 *
diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index e902494ebbd5..a06d50f52ea8 100644
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2012-2015 Spreadtrum Communications Inc.
 *
diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index b313a792b149..1f51eef68c85 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * st-asc.c: ST Asynchronous serial controller (ASC) driver
 *
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 46a1f8617314..566cd85a99f8 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) Maxime Coquelin 2015
 * Copyright (C) STMicroelectronics SA 2017
diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h
index ffc0c5285e51..174be6141cef 100644
--- a/drivers/tty/serial/stm32-usart.h
+++ b/drivers/tty/serial/stm32-usart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) Maxime Coquelin 2015
 * Copyright (C) STMicroelectronics SA 2017
diff --git a/drivers/tty/serial/suncore.c b/drivers/tty/serial/suncore.c
index 127472bd6a7c..70a4ea4eaa6e 100644
--- a/drivers/tty/serial/suncore.c
+++ b/drivers/tty/serial/suncore.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* suncore.c
 *
 * Common SUN serial routines.  Based entirely
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index 46e46894e918..63e34d868de8 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sunhv.c: Serial driver for SUN4V hypervisor console.
 *
 * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index 653a076d89d3..b93d0225f8c9 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sunsab.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.
 *
 * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 95d34d7565c9..6cf3e9b0728f 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * su.c: Small serial driver for keyboard/mouse interface on sparc32/PCI
 *
diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 252cea49c068..bc7af8b08a72 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sunzilog.c: Zilog serial driver for Sparc systems.
 *
 * Driver for Zilog serial chips found on Sun workstations and
diff --git a/drivers/tty/serial/tilegx.c b/drivers/tty/serial/tilegx.c
index 453215f5420d..311eea391f57 100644
--- a/drivers/tty/serial/tilegx.c
+++ b/drivers/tty/serial/tilegx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright 2013 Tilera Corporation. All Rights Reserved.
 *
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index 5da7fe40e391..cdbc23fc85e3 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * timbuart.c timberdale FPGA UART driver
 * Copyright (c) 2009 Intel Corporation
diff --git a/drivers/tty/serial/timbuart.h b/drivers/tty/serial/timbuart.h
index 7e566766bc43..6c642e99abcf 100644
--- a/drivers/tty/serial/timbuart.h
+++ b/drivers/tty/serial/timbuart.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * timbuart.c timberdale FPGA GPIO driver
 * Copyright (c) 2009 Intel Corporation
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 1de99425d9e8..b7d66e99f2b3 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * uartlite.c: Serial driver for Xilinx uartlite serial controller
 *
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index 55b702775786..b01772712c1d 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Freescale QUICC Engine UART device driver
 *
diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c
index 439057e8107a..fc100ea7eded 100644
--- a/drivers/tty/serial/vr41xx_siu.c
+++ b/drivers/tty/serial/vr41xx_siu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 *  Driver for NEC VR4100 series Serial Interface Unit.
 *
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 435a6f3260be..334f0f4e20f5 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
 *
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 7c1c6fb96ea0..028ae96f1443 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
 * Cadence UART driver (found in Xilinx Zynq)
 *
diff --git a/drivers/tty/serial/zs.c b/drivers/tty/serial/zs.c
index d32bd499d684..b03d3e458ea2 100644
--- a/drivers/tty/serial/zs.c
+++ b/drivers/tty/serial/zs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * zs.c: Serial port driver for IOASIC DECstations.
 *
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index 27db7818b673..15189ac3dcb8 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /*
 * $Id: synclink.c,v 4.38 2005/11/07 16:30:34 paulkf Exp $
 *
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 636b8ae29b46..da9f2e56ee50 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /*
 * Device driver for Microgate SyncLink GT serial adapters.
 *
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index 4fed9e7b281f..4cc73be504e3 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-1.0+
 /*
 * $Id: synclinkmp.c,v 4.38 2005/07/15 13:29:44 paulkf Exp $
 *
diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c
index df2d735338e2..30b92c461dea 100644
--- a/drivers/tty/tty_audit.c
+++ b/drivers/tty/tty_audit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Creating audit events from TTY input.
 *
diff --git a/drivers/tty/tty_baudrate.c b/drivers/tty/tty_baudrate.c
index 5c33fd25676d..6ff8cdfc9d2a 100644
--- a/drivers/tty/tty_baudrate.c
+++ b/drivers/tty/tty_baudrate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
 */
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 677fa99b7747..c996b6859c5e 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Tty buffer allocation management
 */
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 94cccb6efa32..dc60aeea87d8 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */
diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index efa96e6c4c1b..d9b561d89432 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
 *
diff --git a/drivers/tty/tty_jobctrl.c b/drivers/tty/tty_jobctrl.c
index e7032309ee87..c4ecd66fafef 100644
--- a/drivers/tty/tty_jobctrl.c
+++ b/drivers/tty/tty_jobctrl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 2fe216b276e2..73598f2a3ada 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kmod.h>
diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c
index 52b7baef4f7a..3b403406d6f3 100644
--- a/drivers/tty/tty_ldsem.c
+++ b/drivers/tty/tty_ldsem.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Ldisc rw semaphore
 *
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 1286f2478bce..25d736880013 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Tty port functions
 */
diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index a5f88cf0f61d..722a6690c70d 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * consolemap.c
 *
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index f4166263bb3a..749e5a5521e6 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 * Written for linux by Johan Myreen as a translation from
 * the assembly version by Linus (with diacriticals added)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index e50492357202..60f509dc0be5 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */