From 305615127a277ffae7e120b0d88dcbf3c91f4d3f Mon Sep 17 00:00:00 2001
From: Allen Pais <allen.lkml@gmail.com>
Date: Fri, 22 Sep 2017 13:56:48 +0530
Subject: drivers: tty: 8250: use setup_timer() helper.

    Use setup_timer function instead of initializing timer with the
    function and data fields.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index d29b512a7d9f..00d4b114f1bf 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -525,8 +525,7 @@ static void __init serial8250_isa_init_ports(void)
 			base_ops = port->ops;
 		port->ops = &univ8250_port_ops;
 
-		init_timer(&up->timer);
-		up->timer.function = serial8250_timeout;
+		setup_timer(&up->timer, serial8250_timeout, 0UL);
 
 		up->ops = &univ8250_driver_ops;
 
-- 
cgit v1.2.3


From 195638b6d44f22c5fcbd428ebfe4b7c012c576f2 Mon Sep 17 00:00:00 2001
From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date: Tue, 3 Oct 2017 11:08:33 +0800
Subject: serial: 8250_fintek: UART dynamic clocksource on Fintek F81866

The F81866 had 4 clocksource 1.8432/18.432/14.769/24MHz and baud rates can
be up to 1.5Mbits with 24MHz. We'll implements the dynamic clocksource in
fintek_8250_set_termios().

Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 54 +++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index e500f7dd2470..53ea353409ce 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -287,6 +287,59 @@ static void fintek_8250_goto_highspeed(struct uart_8250_port *uart,
 	}
 }
 
+void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
+			struct ktermios *old)
+{
+	struct fintek_8250 *pdata = port->private_data;
+	unsigned int baud = tty_termios_baud_rate(termios);
+	int i;
+	static u32 baudrate_table[] = {115200, 921600, 1152000, 1500000};
+	static u8 clock_table[] = { F81866_UART_CLK_1_8432MHZ,
+			F81866_UART_CLK_14_769MHZ, F81866_UART_CLK_18_432MHZ,
+			F81866_UART_CLK_24MHZ };
+
+	for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) {
+		if (baud > baudrate_table[i] || baudrate_table[i] % baud != 0)
+			continue;
+
+		if (port->uartclk == baudrate_table[i] * 16)
+			break;
+
+		if (fintek_8250_enter_key(pdata->base_port, pdata->key))
+			continue;
+
+		port->uartclk = baudrate_table[i] * 16;
+
+		sio_write_reg(pdata, LDN, pdata->index);
+		sio_write_mask_reg(pdata, F81866_UART_CLK,
+				F81866_UART_CLK_MASK, clock_table[i]);
+
+		fintek_8250_exit_key(pdata->base_port);
+		break;
+	}
+
+	if (i == ARRAY_SIZE(baudrate_table)) {
+		baud = tty_termios_baud_rate(old);
+		tty_termios_encode_baud_rate(termios, baud, baud);
+	}
+
+	serial8250_do_set_termios(port, termios, old);
+}
+
+static void fintek_8250_set_termios_handler(struct uart_8250_port *uart)
+{
+	struct fintek_8250 *pdata = uart->port.private_data;
+
+	switch (pdata->pid) {
+	case CHIP_ID_F81866:
+		uart->port.set_termios = fintek_8250_set_termios;
+		break;
+
+	default:
+		break;
+	}
+}
+
 static int probe_setup_port(struct fintek_8250 *pdata,
 					struct uart_8250_port *uart)
 {
@@ -373,6 +426,7 @@ int fintek_8250_probe(struct uart_8250_port *uart)
 	memcpy(pdata, &probe_data, sizeof(probe_data));
 	uart->port.private_data = pdata;
 	fintek_8250_set_rs485_handler(uart);
+	fintek_8250_set_termios_handler(uart);
 
 	return 0;
 }
-- 
cgit v1.2.3


From 58178914ae5bad449d8e53e38c7171ec85ad2c9a Mon Sep 17 00:00:00 2001
From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date: Tue, 3 Oct 2017 11:08:34 +0800
Subject: serial: 8250_fintek: UART dynamic clocksource on Fintek F81216H

The F81216H had 4 clocksource 1.8432/18.432/14.769/24MHzand  baud rates can
be up to 1.5Mbits with 24MHz. The register value and mask is the same with
F81866. But F81866 register address is F2h, F81216H is F0h.

We'll implements the dynamic clocksource in fintek_8250_set_termios().

Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index 53ea353409ce..f3b622f00047 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -40,6 +40,16 @@
 #define IRQ_LEVEL_LOW	0
 #define IRQ_EDGE_HIGH	BIT(5)
 
+/*
+ * F81216H clock source register, the value and mask is the same with F81866,
+ * but it's on F0h.
+ *
+ * Clock speeds for UART (register F0h)
+ * 00: 1.8432MHz.
+ * 01: 18.432MHz.
+ * 10: 24MHz.
+ * 11: 14.769MHz.
+ */
 #define RS485  0xF0
 #define RTS_INVERT BIT(5)
 #define RS485_URA BIT(4)
@@ -293,11 +303,28 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
 	struct fintek_8250 *pdata = port->private_data;
 	unsigned int baud = tty_termios_baud_rate(termios);
 	int i;
+	u8 reg;
 	static u32 baudrate_table[] = {115200, 921600, 1152000, 1500000};
 	static u8 clock_table[] = { F81866_UART_CLK_1_8432MHZ,
 			F81866_UART_CLK_14_769MHZ, F81866_UART_CLK_18_432MHZ,
 			F81866_UART_CLK_24MHZ };
 
+	switch (pdata->pid) {
+	case CHIP_ID_F81216H:
+		reg = RS485;
+		break;
+	case CHIP_ID_F81866:
+		reg = F81866_UART_CLK;
+		break;
+	default:
+		/* Don't change clocksource with unknown PID */
+		dev_warn(port->dev,
+			"%s: pid: %x Not support. use default set_termios.\n",
+			__func__, pdata->pid);
+		serial8250_do_set_termios(port, termios, old);
+		return;
+	}
+
 	for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) {
 		if (baud > baudrate_table[i] || baudrate_table[i] % baud != 0)
 			continue;
@@ -311,8 +338,8 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
 		port->uartclk = baudrate_table[i] * 16;
 
 		sio_write_reg(pdata, LDN, pdata->index);
-		sio_write_mask_reg(pdata, F81866_UART_CLK,
-				F81866_UART_CLK_MASK, clock_table[i]);
+		sio_write_mask_reg(pdata, reg, F81866_UART_CLK_MASK,
+				clock_table[i]);
 
 		fintek_8250_exit_key(pdata->base_port);
 		break;
@@ -331,6 +358,7 @@ static void fintek_8250_set_termios_handler(struct uart_8250_port *uart)
 	struct fintek_8250 *pdata = uart->port.private_data;
 
 	switch (pdata->pid) {
+	case CHIP_ID_F81216H:
 	case CHIP_ID_F81866:
 		uart->port.set_termios = fintek_8250_set_termios;
 		break;
-- 
cgit v1.2.3


From 4c3897b1b0e3fffe964deb8b008da0623dfa2057 Mon Sep 17 00:00:00 2001
From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date: Tue, 3 Oct 2017 11:08:35 +0800
Subject: serial: 8250_fintek: fix warning reported from smatch

This patch is fix the warning reported by smatch as following:

drivers/tty/serial/8250/8250_fintek.c:294 fintek_8250_goto_highspeed()
warn: inconsistent indenting

Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index f3b622f00047..96cc45f25ee9 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -290,7 +290,7 @@ static void fintek_8250_goto_highspeed(struct uart_8250_port *uart,
 			F81866_UART_CLK_MASK,
 			F81866_UART_CLK_14_769MHZ);
 
-			uart->port.uartclk = 921600 * 16;
+		uart->port.uartclk = 921600 * 16;
 		break;
 	default: /* leave clock speed untouched */
 		break;
-- 
cgit v1.2.3


From daf3930cf616792ec62c4b2ab0926525f1b5de4d Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Fri, 22 Sep 2017 15:11:56 +0300
Subject: serial: 8250_mid: Enable HSU on Intel Cedar Fork PCH

Intel Cedar Fork PCH has similar HSU as has been used on Intel Denverton.
Add PCI ID to get it enumerated.

While here, remove DNV part form INTEL_MID_UART_DNV_FISR to show that is
used not only on Intel Denverton from now on.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_mid.c | 6 ++++--
 drivers/tty/serial/8250/8250_pci.c | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c
index ec957cce8c9a..b8f0b7f70d5a 100644
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -23,10 +23,11 @@
 #define PCI_DEVICE_ID_INTEL_PNW_UART2	0x081c
 #define PCI_DEVICE_ID_INTEL_PNW_UART3	0x081d
 #define PCI_DEVICE_ID_INTEL_TNG_UART	0x1191
+#define PCI_DEVICE_ID_INTEL_CDF_UART	0x18d8
 #define PCI_DEVICE_ID_INTEL_DNV_UART	0x19d8
 
 /* Intel MID Specific registers */
-#define INTEL_MID_UART_DNV_FISR		0x08
+#define INTEL_MID_UART_FISR		0x08
 #define INTEL_MID_UART_PS		0x30
 #define INTEL_MID_UART_MUL		0x34
 #define INTEL_MID_UART_DIV		0x38
@@ -130,7 +131,7 @@ static int dnv_handle_irq(struct uart_port *p)
 {
 	struct mid8250 *mid = p->private_data;
 	struct uart_8250_port *up = up_to_u8250p(p);
-	unsigned int fisr = serial_port_in(p, INTEL_MID_UART_DNV_FISR);
+	unsigned int fisr = serial_port_in(p, INTEL_MID_UART_FISR);
 	u32 status;
 	int ret = 0;
 	int err;
@@ -377,6 +378,7 @@ static const struct pci_device_id pci_ids[] = {
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART2, pnw_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_PNW_UART3, pnw_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_TNG_UART, tng_board),
+	MID_DEVICE(PCI_DEVICE_ID_INTEL_CDF_UART, dnv_board),
 	MID_DEVICE(PCI_DEVICE_ID_INTEL_DNV_UART, dnv_board),
 	{ },
 };
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 0c101a7470b0..a6bf59d8b1d6 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -3368,6 +3368,7 @@ static const struct pci_device_id blacklist[] = {
 	{ PCI_VDEVICE(INTEL, 0x081c), },
 	{ PCI_VDEVICE(INTEL, 0x081d), },
 	{ PCI_VDEVICE(INTEL, 0x1191), },
+	{ PCI_VDEVICE(INTEL, 0x18d8), },
 	{ PCI_VDEVICE(INTEL, 0x19d8), },
 
 	/* Intel platforms with DesignWare UART */
-- 
cgit v1.2.3


From 6263368c5b0b758d8639cad37a2a6493c9370425 Mon Sep 17 00:00:00 2001
From: Ed Blake <ed.blake@sondrel.com>
Date: Tue, 26 Sep 2017 11:40:02 +0100
Subject: serial: Add define for max baud rate divisor

Add a define for the maximum baud rate divisor, to improve code
readability.

Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_mtk.c  | 2 +-
 drivers/tty/serial/8250/8250_omap.c | 4 ++--
 drivers/tty/serial/8250/8250_port.c | 2 +-
 include/uapi/linux/serial_reg.h     | 1 +
 4 files changed, 5 insertions(+), 4 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index fb45770d47aa..fef9823d7b4c 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -61,7 +61,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
 	 * registers to their default values.
 	 */
 	baud = uart_get_baud_rate(port, termios, old,
-				  port->uartclk / 16 / 0xffff,
+				  port->uartclk / 16 / UART_DIV_MAX,
 				  port->uartclk);
 
 	if (baud <= 115200) {
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 833771bca0a5..4938d338e01f 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -199,7 +199,7 @@ static void omap_8250_get_divisor(struct uart_port *port, unsigned int baud,
 	 * Old custom speed handling.
 	 */
 	if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST) {
-		priv->quot = port->custom_divisor & 0xffff;
+		priv->quot = port->custom_divisor & UART_DIV_MAX;
 		/*
 		 * I assume that nobody is using this. But hey, if somebody
 		 * would like to specify the divisor _and_ the mode then the
@@ -358,7 +358,7 @@ static void omap_8250_set_termios(struct uart_port *port,
 	 * Ask the core to calculate the divisor for us.
 	 */
 	baud = uart_get_baud_rate(port, termios, old,
-				  port->uartclk / 16 / 0xffff,
+				  port->uartclk / 16 / UART_DIV_MAX,
 				  port->uartclk / 13);
 	omap_8250_get_divisor(port, baud, priv);
 
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index f0cc04f62b67..01ab2188a151 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2601,7 +2601,7 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port,
 	 * causing transmission errors.
 	 */
 	return uart_get_baud_rate(port, termios, old,
-				  port->uartclk / 16 / 0xffff,
+				  port->uartclk / 16 / UART_DIV_MAX,
 				  port->uartclk);
 }
 
diff --git a/include/uapi/linux/serial_reg.h b/include/uapi/linux/serial_reg.h
index 5db76880b4ad..dea05724c760 100644
--- a/include/uapi/linux/serial_reg.h
+++ b/include/uapi/linux/serial_reg.h
@@ -157,6 +157,7 @@
  */
 #define UART_DLL	0	/* Out: Divisor Latch Low */
 #define UART_DLM	1	/* Out: Divisor Latch High */
+#define UART_DIV_MAX	0xFFFF	/* Max divisor value */
 
 /*
  * LCR=0xBF (or DLAB=1 for 16C660)
-- 
cgit v1.2.3


From de9e33bdfa22e607a88494ff21e9196d00bf4550 Mon Sep 17 00:00:00 2001
From: Ed Blake <ed.blake@sondrel.com>
Date: Tue, 26 Sep 2017 11:40:03 +0100
Subject: serial: 8250_dw: Improve clock rate setting

Currently dw8250_set_termios sets the input clock to the nearest
achievable rate to baudx16.  If necessary, the input clock is then
divided down to baudx16 using an integer divider within the UART
device, with the divisor calculated in the 8250 core driver.

However, the clock rate set by dw8250_set_termios and subsequently
divided down could be considerably different to the target baudx16
rate, resulting in incorrect operation.  This patch fixes this by
iteratively searching for an input clock rate that is within +/-1.6%
of an integer multiple of the target baudx16 rate.

Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_dw.c | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 7e638997bfc2..10b0aca8ae19 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -256,25 +256,31 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios,
 			       struct ktermios *old)
 {
 	unsigned int baud = tty_termios_baud_rate(termios);
+	unsigned int target_rate, min_rate, max_rate;
 	struct dw8250_data *d = p->private_data;
 	long rate;
-	int ret;
+	int i, ret;
 
 	if (IS_ERR(d->clk) || !old)
 		goto out;
 
-	clk_disable_unprepare(d->clk);
-	rate = clk_round_rate(d->clk, baud * 16);
-	if (rate < 0)
-		ret = rate;
-	else if (rate == 0)
-		ret = -ENOENT;
-	else
-		ret = clk_set_rate(d->clk, rate);
-	clk_prepare_enable(d->clk);
+	/* Find a clk rate within +/-1.6% of an integer multiple of baudx16 */
+	target_rate = baud * 16;
+	min_rate = target_rate - (target_rate >> 6);
+	max_rate = target_rate + (target_rate >> 6);
 
-	if (!ret)
-		p->uartclk = rate;
+	for (i = 1; i <= UART_DIV_MAX; i++) {
+		rate = clk_round_rate(d->clk, i * target_rate);
+		if (rate >= i * min_rate && rate <= i * max_rate)
+			break;
+	}
+	if (i <= UART_DIV_MAX) {
+		clk_disable_unprepare(d->clk);
+		ret = clk_set_rate(d->clk, rate);
+		clk_prepare_enable(d->clk);
+		if (!ret)
+			p->uartclk = rate;
+	}
 
 out:
 	p->status &= ~UPSTAT_AUTOCTS;
-- 
cgit v1.2.3


From 0ab84da2e076948c49d36197ee7d254125c53eab Mon Sep 17 00:00:00 2001
From: Aaron Sierra <asierra@xes-inc.com>
Date: Wed, 4 Oct 2017 10:01:28 -0500
Subject: serial: 8250: Preserve DLD[7:4] for PORT_XR17V35X

The upper four bits of the XR17V35x fractional divisor register (DLD)
control general chip function (RS-485 direction pin polarity, multidrop
mode, XON/XOFF parity check, and fast IR mode). Don't allow these bits
to be clobbered when setting the baudrate.

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_port.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 01ab2188a151..c2fb92feca20 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2586,8 +2586,11 @@ static void serial8250_set_divisor(struct uart_port *port, unsigned int baud,
 	serial_dl_write(up, quot);
 
 	/* XR17V35x UARTs have an extra fractional divisor register (DLD) */
-	if (up->port.type == PORT_XR17V35X)
+	if (up->port.type == PORT_XR17V35X) {
+		/* Preserve bits not related to baudrate; DLD[7:4]. */
+		quot_frac |= serial_port_in(port, 0x2) & 0xf0;
 		serial_port_out(port, 0x2, quot_frac);
+	}
 }
 
 static unsigned int serial8250_get_baud_rate(struct uart_port *port,
-- 
cgit v1.2.3


From fd97e66c5529046e989a0879c3bb58fddb592c71 Mon Sep 17 00:00:00 2001
From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date: Tue, 17 Oct 2017 14:23:08 +0800
Subject: serial: 8250_fintek: Fix finding base_port with activated SuperIO

The SuperIO will be configured at boot time by BIOS, but some BIOS
will not deactivate the SuperIO when the end of configuration. It'll
lead to mismatch for pdata->base_port in probe_setup_port(). So we'll
deactivate all SuperIO before activate special base_port in
fintek_8250_enter_key().

Tested on iBASE MI802.

Cc: stable@vger.kernel.org
Tested-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Reviewd-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index 96cc45f25ee9..b34623914413 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -128,6 +128,9 @@ static int fintek_8250_enter_key(u16 base_port, u8 key)
 	if (!request_muxed_region(base_port, 2, "8250_fintek"))
 		return -EBUSY;
 
+	/* Force to deactive all SuperIO in this base_port */
+	outb(EXIT_KEY, base_port + ADDR_PORT);
+
 	outb(key, base_port + ADDR_PORT);
 	outb(key, base_port + ADDR_PORT);
 	return 0;
-- 
cgit v1.2.3


From 7c3356457aeb07d183dfe9c6bb69dceee5a06ca9 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Tue, 24 Oct 2017 02:59:17 -0700
Subject: serial: 8250: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Jiri Slaby <jslaby@suse.com>
Cc: Vignesh R <vigneshr@ti.com>
Cc: Ed Blake <ed.blake@imgtec.com>
Cc: Matthias Brugger <mbrugger@suse.com>
Cc: Sean Young <sean@mess.org>
Cc: linux-serial@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_core.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 00d4b114f1bf..ccfc42ca846d 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -262,17 +262,17 @@ static void serial_unlink_irq_chain(struct uart_8250_port *up)
  * barely passable results for a 16550A.  (Although at the expense
  * of much CPU overhead).
  */
-static void serial8250_timeout(unsigned long data)
+static void serial8250_timeout(struct timer_list *t)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)data;
+	struct uart_8250_port *up = from_timer(up, t, timer);
 
 	up->port.handle_irq(&up->port);
 	mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port));
 }
 
-static void serial8250_backup_timeout(unsigned long data)
+static void serial8250_backup_timeout(struct timer_list *t)
 {
-	struct uart_8250_port *up = (struct uart_8250_port *)data;
+	struct uart_8250_port *up = from_timer(up, t, timer);
 	unsigned int iir, ier = 0, lsr;
 	unsigned long flags;
 
@@ -329,8 +329,7 @@ static int univ8250_setup_irq(struct uart_8250_port *up)
 	if (up->bugs & UART_BUG_THRE) {
 		pr_debug("ttyS%d - using backup timer\n", serial_index(port));
 
-		up->timer.function = serial8250_backup_timeout;
-		up->timer.data = (unsigned long)up;
+		up->timer.function = (TIMER_FUNC_TYPE)serial8250_backup_timeout;
 		mod_timer(&up->timer, jiffies +
 			  uart_poll_timeout(port) + HZ / 5);
 	}
@@ -341,7 +340,6 @@ static int univ8250_setup_irq(struct uart_8250_port *up)
 	 * driver used to do this with IRQ0.
 	 */
 	if (!port->irq) {
-		up->timer.data = (unsigned long)up;
 		mod_timer(&up->timer, jiffies + uart_poll_timeout(port));
 	} else
 		retval = serial_link_irq_chain(up);
@@ -354,7 +352,7 @@ static void univ8250_release_irq(struct uart_8250_port *up)
 	struct uart_port *port = &up->port;
 
 	del_timer_sync(&up->timer);
-	up->timer.function = serial8250_timeout;
+	up->timer.function = (TIMER_FUNC_TYPE)serial8250_timeout;
 	if (port->irq)
 		serial_unlink_irq_chain(up);
 }
@@ -525,7 +523,7 @@ static void __init serial8250_isa_init_ports(void)
 			base_ops = port->ops;
 		port->ops = &univ8250_port_ops;
 
-		setup_timer(&up->timer, serial8250_timeout, 0UL);
+		timer_setup(&up->timer, serial8250_timeout, 0);
 
 		up->ops = &univ8250_driver_ops;
 
-- 
cgit v1.2.3


From 3236a965486ba0c6043cf2c7b51943d8b382ae29 Mon Sep 17 00:00:00 2001
From: Lukas Wunner <lukas@wunner.de>
Date: Sat, 28 Oct 2017 11:35:49 +0200
Subject: serial: 8250_fintek: Fix rs485 disablement on invalid ioctl()

This driver's ->rs485_config callback checks if SER_RS485_RTS_ON_SEND
and SER_RS485_RTS_AFTER_SEND have the same value.  If they do, it means
the user has passed in invalid data with the TIOCSRS485 ioctl()
since RTS must have a different polarity when sending and when not
sending.  In this case, rs485 mode is not enabled (the RS485_URA bit
is not set in the RS485 Enable Register) and this is supposed to be
signaled back to the user by clearing the SER_RS485_ENABLED bit in
struct serial_rs485 ... except a missing tilde character is preventing
that from happening.

Fixes: 28e3fb6c4dce ("serial: Add support for Fintek F81216A LPC to 4 UART")
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Cc: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index b34623914413..c41cbb52f1fe 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -221,7 +221,7 @@ static int fintek_8250_rs485_config(struct uart_port *port,
 
 	if ((!!(rs485->flags & SER_RS485_RTS_ON_SEND)) ==
 			(!!(rs485->flags & SER_RS485_RTS_AFTER_SEND)))
-		rs485->flags &= SER_RS485_ENABLED;
+		rs485->flags &= ~SER_RS485_ENABLED;
 	else
 		config |= RS485_URA;
 
-- 
cgit v1.2.3


From b86f86e8e7c5264bb8f5835d60f9ec840d9f5a7a Mon Sep 17 00:00:00 2001
From: Tomas Melin <tomas.melin@vaisala.com>
Date: Fri, 27 Oct 2017 15:16:30 +0300
Subject: serial: 8250: fix potential deadlock in rs485-mode

Canceling hrtimer when holding uart spinlock can deadlock.

CPU0: syscall write
          -> get uart port spinlock
              -> write uart
                  -> start_tx_rs485
                      -> hrtimer_cancel
                          -> wait for hrtimer callback to finish

CPU1: hrtimer IRQ
          -> run hrtimer
              -> em485_handle_stop_tx
                  -> get uart port spinlock

CPU0 is waiting for the hrtimer callback to finish, but the hrtimer
callback running on CPU1 is waiting to get the uart port spinlock.

This deadlock can be avoided by not canceling the hrtimers in these paths.
Setting active_timer=NULL can be done without accessing hrtimer,
and that will effectively cancel operations that would otherwise have been
performed by the hrtimer callback.

Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_port.c | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index c2fb92feca20..d0d171bf6b58 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -1516,7 +1516,6 @@ static inline void __stop_tx(struct uart_8250_port *p)
 			return;
 
 		em485->active_timer = NULL;
-		hrtimer_cancel(&em485->start_tx_timer);
 
 		__stop_tx_rs485(p);
 	}
@@ -1580,8 +1579,6 @@ static inline void start_tx_rs485(struct uart_port *port)
 		serial8250_stop_rx(&up->port);
 
 	em485->active_timer = NULL;
-	if (hrtimer_is_queued(&em485->stop_tx_timer))
-		hrtimer_cancel(&em485->stop_tx_timer);
 
 	mcr = serial8250_in_MCR(up);
 	if (!!(up->port.rs485.flags & SER_RS485_RTS_ON_SEND) !=
-- 
cgit v1.2.3


From e3b3d0f549c1d19b94e6ac55c66643166ea649ef Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 6 Nov 2017 18:11:51 +0100
Subject: tty: add SPDX identifiers to all remaining files in drivers/tty/
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/tty files files with the correct SPDX license
identifier based on the license text in the file itself.  The SPDX
identifier is a legally binding shorthand, which can be used instead of
the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Jiri Slaby <jslaby@suse.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: David Sterba <dsterba@suse.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Joachim Eastwood <manabian@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Tobias Klauser <tklauser@distanz.ch>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Richard Genoud <richard.genoud@gmail.com>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: "Uwe Kleine-König" <kernel@pengutronix.de>
Cc: Pat Gefre <pfg@sgi.com>
Cc: "Guilherme G. Piccoli" <gpiccoli@linux.vnet.ibm.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: Sylvain Lemieux <slemieux.tyco@gmail.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Timur Tabi <timur@tabi.org>
Cc: Tony Prisk <linux@prisktech.co.nz>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/amiserial.c                      | 1 +
 drivers/tty/bfin_jtag_comm.c                 | 1 +
 drivers/tty/cyclades.c                       | 1 +
 drivers/tty/ehv_bytechan.c                   | 1 +
 drivers/tty/goldfish.c                       | 1 +
 drivers/tty/hvc/hvc_bfin_jtag.c              | 1 +
 drivers/tty/hvc/hvc_console.c                | 1 +
 drivers/tty/hvc/hvc_console.h                | 1 +
 drivers/tty/hvc/hvc_dcc.c                    | 1 +
 drivers/tty/hvc/hvc_opal.c                   | 1 +
 drivers/tty/hvc/hvc_rtas.c                   | 1 +
 drivers/tty/hvc/hvc_tile.c                   | 1 +
 drivers/tty/hvc/hvc_udbg.c                   | 1 +
 drivers/tty/hvc/hvc_vio.c                    | 1 +
 drivers/tty/hvc/hvc_xen.c                    | 1 +
 drivers/tty/hvc/hvcs.c                       | 1 +
 drivers/tty/hvc/hvsi.c                       | 1 +
 drivers/tty/ipwireless/main.c                | 1 +
 drivers/tty/isicom.c                         | 1 +
 drivers/tty/metag_da.c                       | 1 +
 drivers/tty/mips_ejtag_fdc.c                 | 1 +
 drivers/tty/moxa.c                           | 1 +
 drivers/tty/mxser.c                          | 1 +
 drivers/tty/n_gsm.c                          | 1 +
 drivers/tty/n_hdlc.c                         | 1 +
 drivers/tty/n_null.c                         | 1 +
 drivers/tty/n_r3964.c                        | 1 +
 drivers/tty/n_tracerouter.c                  | 1 +
 drivers/tty/n_tracesink.c                    | 1 +
 drivers/tty/n_tracesink.h                    | 1 +
 drivers/tty/n_tty.c                          | 1 +
 drivers/tty/nozomi.c                         | 1 +
 drivers/tty/rocket.c                         | 1 +
 drivers/tty/serdev/core.c                    | 1 +
 drivers/tty/serdev/serdev-ttyport.c          | 1 +
 drivers/tty/serial/21285.c                   | 1 +
 drivers/tty/serial/8250/8250.h               | 1 +
 drivers/tty/serial/8250/8250_accent.c        | 1 +
 drivers/tty/serial/8250/8250_acorn.c         | 1 +
 drivers/tty/serial/8250/8250_aspeed_vuart.c  | 1 +
 drivers/tty/serial/8250/8250_bcm2835aux.c    | 1 +
 drivers/tty/serial/8250/8250_boca.c          | 1 +
 drivers/tty/serial/8250/8250_core.c          | 1 +
 drivers/tty/serial/8250/8250_dma.c           | 1 +
 drivers/tty/serial/8250/8250_dw.c            | 1 +
 drivers/tty/serial/8250/8250_early.c         | 1 +
 drivers/tty/serial/8250/8250_em.c            | 1 +
 drivers/tty/serial/8250/8250_exar.c          | 1 +
 drivers/tty/serial/8250/8250_exar_st16c554.c | 1 +
 drivers/tty/serial/8250/8250_fintek.c        | 1 +
 drivers/tty/serial/8250/8250_fourport.c      | 1 +
 drivers/tty/serial/8250/8250_fsl.c           | 1 +
 drivers/tty/serial/8250/8250_gsc.c           | 1 +
 drivers/tty/serial/8250/8250_hp300.c         | 1 +
 drivers/tty/serial/8250/8250_hub6.c          | 1 +
 drivers/tty/serial/8250/8250_ingenic.c       | 1 +
 drivers/tty/serial/8250/8250_lpc18xx.c       | 1 +
 drivers/tty/serial/8250/8250_lpss.c          | 1 +
 drivers/tty/serial/8250/8250_mid.c           | 1 +
 drivers/tty/serial/8250/8250_moxa.c          | 1 +
 drivers/tty/serial/8250/8250_mtk.c           | 1 +
 drivers/tty/serial/8250/8250_of.c            | 1 +
 drivers/tty/serial/8250/8250_omap.c          | 1 +
 drivers/tty/serial/8250/8250_pci.c           | 1 +
 drivers/tty/serial/8250/8250_pnp.c           | 1 +
 drivers/tty/serial/8250/8250_port.c          | 1 +
 drivers/tty/serial/8250/8250_pxa.c           | 1 +
 drivers/tty/serial/8250/8250_uniphier.c      | 1 +
 drivers/tty/serial/8250/serial_cs.c          | 1 +
 drivers/tty/serial/altera_jtaguart.c         | 1 +
 drivers/tty/serial/altera_uart.c             | 1 +
 drivers/tty/serial/amba-pl010.c              | 1 +
 drivers/tty/serial/amba-pl011.c              | 1 +
 drivers/tty/serial/apbuart.c                 | 1 +
 drivers/tty/serial/ar933x_uart.c             | 1 +
 drivers/tty/serial/arc_uart.c                | 1 +
 drivers/tty/serial/atmel_serial.c            | 1 +
 drivers/tty/serial/atmel_serial.h            | 1 +
 drivers/tty/serial/bcm63xx_uart.c            | 1 +
 drivers/tty/serial/bfin_sport_uart.c         | 1 +
 drivers/tty/serial/bfin_sport_uart.h         | 1 +
 drivers/tty/serial/bfin_uart.c               | 1 +
 drivers/tty/serial/clps711x.c                | 1 +
 drivers/tty/serial/cpm_uart/cpm_uart.h       | 1 +
 drivers/tty/serial/cpm_uart/cpm_uart_core.c  | 1 +
 drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c  | 1 +
 drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c  | 1 +
 drivers/tty/serial/digicolor-usart.c         | 1 +
 drivers/tty/serial/dz.c                      | 1 +
 drivers/tty/serial/earlycon-arm-semihost.c   | 1 +
 drivers/tty/serial/earlycon.c                | 1 +
 drivers/tty/serial/efm32-uart.c              | 1 +
 drivers/tty/serial/fsl_lpuart.c              | 1 +
 drivers/tty/serial/icom.c                    | 1 +
 drivers/tty/serial/icom.h                    | 1 +
 drivers/tty/serial/ifx6x60.c                 | 1 +
 drivers/tty/serial/ifx6x60.h                 | 1 +
 drivers/tty/serial/imx.c                     | 1 +
 drivers/tty/serial/ioc3_serial.c             | 1 +
 drivers/tty/serial/ioc4_serial.c             | 1 +
 drivers/tty/serial/ip22zilog.c               | 1 +
 drivers/tty/serial/jsm/jsm.h                 | 1 +
 drivers/tty/serial/jsm/jsm_cls.c             | 1 +
 drivers/tty/serial/jsm/jsm_driver.c          | 1 +
 drivers/tty/serial/jsm/jsm_neo.c             | 1 +
 drivers/tty/serial/jsm/jsm_tty.c             | 1 +
 drivers/tty/serial/kgdb_nmi.c                | 1 +
 drivers/tty/serial/kgdboc.c                  | 1 +
 drivers/tty/serial/lantiq.c                  | 1 +
 drivers/tty/serial/lpc32xx_hs.c              | 1 +
 drivers/tty/serial/m32r_sio.c                | 1 +
 drivers/tty/serial/m32r_sio_reg.h            | 1 +
 drivers/tty/serial/max3100.c                 | 1 +
 drivers/tty/serial/max310x.c                 | 1 +
 drivers/tty/serial/mcf.c                     | 1 +
 drivers/tty/serial/men_z135_uart.c           | 1 +
 drivers/tty/serial/meson_uart.c              | 1 +
 drivers/tty/serial/mpc52xx_uart.c            | 1 +
 drivers/tty/serial/mps2-uart.c               | 1 +
 drivers/tty/serial/mpsc.c                    | 1 +
 drivers/tty/serial/msm_serial.c              | 1 +
 drivers/tty/serial/mux.c                     | 1 +
 drivers/tty/serial/mvebu-uart.c              | 1 +
 drivers/tty/serial/mxs-auart.c               | 1 +
 drivers/tty/serial/netx-serial.c             | 1 +
 drivers/tty/serial/omap-serial.c             | 1 +
 drivers/tty/serial/owl-uart.c                | 1 +
 drivers/tty/serial/pch_uart.c                | 1 +
 drivers/tty/serial/pic32_uart.c              | 1 +
 drivers/tty/serial/pic32_uart.h              | 1 +
 drivers/tty/serial/pmac_zilog.c              | 1 +
 drivers/tty/serial/pnx8xxx_uart.c            | 1 +
 drivers/tty/serial/pxa.c                     | 1 +
 drivers/tty/serial/rp2.c                     | 1 +
 drivers/tty/serial/sa1100.c                  | 1 +
 drivers/tty/serial/samsung.c                 | 1 +
 drivers/tty/serial/samsung.h                 | 1 +
 drivers/tty/serial/sb1250-duart.c            | 1 +
 drivers/tty/serial/sc16is7xx.c               | 1 +
 drivers/tty/serial/sccnxp.c                  | 1 +
 drivers/tty/serial/serial-tegra.c            | 1 +
 drivers/tty/serial/serial_core.c             | 1 +
 drivers/tty/serial/serial_ks8695.c           | 1 +
 drivers/tty/serial/serial_mctrl_gpio.c       | 1 +
 drivers/tty/serial/serial_mctrl_gpio.h       | 1 +
 drivers/tty/serial/serial_txx9.c             | 1 +
 drivers/tty/serial/sh-sci.c                  | 1 +
 drivers/tty/serial/sirfsoc_uart.c            | 1 +
 drivers/tty/serial/sirfsoc_uart.h            | 1 +
 drivers/tty/serial/sprd_serial.c             | 1 +
 drivers/tty/serial/st-asc.c                  | 1 +
 drivers/tty/serial/stm32-usart.c             | 1 +
 drivers/tty/serial/stm32-usart.h             | 1 +
 drivers/tty/serial/suncore.c                 | 1 +
 drivers/tty/serial/sunhv.c                   | 1 +
 drivers/tty/serial/sunsab.c                  | 1 +
 drivers/tty/serial/sunsu.c                   | 1 +
 drivers/tty/serial/sunzilog.c                | 1 +
 drivers/tty/serial/tilegx.c                  | 1 +
 drivers/tty/serial/timbuart.c                | 1 +
 drivers/tty/serial/timbuart.h                | 1 +
 drivers/tty/serial/uartlite.c                | 1 +
 drivers/tty/serial/ucc_uart.c                | 1 +
 drivers/tty/serial/vr41xx_siu.c              | 1 +
 drivers/tty/serial/vt8500_serial.c           | 1 +
 drivers/tty/serial/xilinx_uartps.c           | 1 +
 drivers/tty/serial/zs.c                      | 1 +
 drivers/tty/synclink.c                       | 1 +
 drivers/tty/synclink_gt.c                    | 1 +
 drivers/tty/synclinkmp.c                     | 1 +
 drivers/tty/tty_audit.c                      | 1 +
 drivers/tty/tty_baudrate.c                   | 1 +
 drivers/tty/tty_buffer.c                     | 1 +
 drivers/tty/tty_io.c                         | 1 +
 drivers/tty/tty_ioctl.c                      | 1 +
 drivers/tty/tty_jobctrl.c                    | 1 +
 drivers/tty/tty_ldisc.c                      | 1 +
 drivers/tty/tty_ldsem.c                      | 1 +
 drivers/tty/tty_port.c                       | 1 +
 drivers/tty/vt/consolemap.c                  | 1 +
 drivers/tty/vt/keyboard.c                    | 1 +
 drivers/tty/vt/vt.c                          | 1 +
 182 files changed, 182 insertions(+)

(limited to 'drivers/tty/serial/8250')

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
  */
-- 
cgit v1.2.3


From 4793f2ebff1c890386a514998606205a2948011c Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 6 Nov 2017 18:11:52 +0100
Subject: tty: serial: Remove redundant license text
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Now that the SPDX tag is in all tty files, that identifies the license
in a specific and legally-defined manner.  So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Jiri Slaby <jslaby@suse.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Joachim Eastwood <manabian@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Tobias Klauser <tklauser@distanz.ch>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Richard Genoud <richard.genoud@gmail.com>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Pat Gefre <pfg@sgi.com>
Cc: "Guilherme G. Piccoli" <gpiccoli@linux.vnet.ibm.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: Sylvain Lemieux <slemieux.tyco@gmail.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: David Brown <david.brown@linaro.org>
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Timur Tabi <timur@tabi.org>
Cc: Tony Prisk <linux@prisktech.co.nz>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250.h               |  5 -----
 drivers/tty/serial/8250/8250_accent.c        |  4 ----
 drivers/tty/serial/8250/8250_acorn.c         |  4 ----
 drivers/tty/serial/8250/8250_aspeed_vuart.c  |  5 -----
 drivers/tty/serial/8250/8250_bcm2835aux.c    |  5 -----
 drivers/tty/serial/8250/8250_boca.c          |  4 ----
 drivers/tty/serial/8250/8250_core.c          |  5 -----
 drivers/tty/serial/8250/8250_dma.c           |  5 -----
 drivers/tty/serial/8250/8250_dw.c            |  5 -----
 drivers/tty/serial/8250/8250_early.c         |  4 ----
 drivers/tty/serial/8250/8250_em.c            | 13 -------------
 drivers/tty/serial/8250/8250_exar.c          |  4 ----
 drivers/tty/serial/8250/8250_exar_st16c554.c |  4 ----
 drivers/tty/serial/8250/8250_fintek.c        |  5 -----
 drivers/tty/serial/8250/8250_fourport.c      |  4 ----
 drivers/tty/serial/8250/8250_fsl.c           |  4 ----
 drivers/tty/serial/8250/8250_gsc.c           |  5 -----
 drivers/tty/serial/8250/8250_hub6.c          |  4 ----
 drivers/tty/serial/8250/8250_ingenic.c       |  9 ---------
 drivers/tty/serial/8250/8250_lpc18xx.c       |  5 -----
 drivers/tty/serial/8250/8250_lpss.c          |  4 ----
 drivers/tty/serial/8250/8250_mid.c           |  4 ----
 drivers/tty/serial/8250/8250_moxa.c          |  4 ----
 drivers/tty/serial/8250/8250_mtk.c           | 10 ----------
 drivers/tty/serial/8250/8250_of.c            |  6 ------
 drivers/tty/serial/8250/8250_pci.c           |  4 ----
 drivers/tty/serial/8250/8250_pnp.c           |  4 ----
 drivers/tty/serial/8250/8250_port.c          |  5 -----
 drivers/tty/serial/8250/8250_pxa.c           |  6 ------
 drivers/tty/serial/8250/8250_uniphier.c      | 10 ----------
 drivers/tty/serial/altera_jtaguart.c         |  5 -----
 drivers/tty/serial/altera_uart.c             |  5 -----
 drivers/tty/serial/amba-pl010.c              | 14 --------------
 drivers/tty/serial/amba-pl011.c              | 14 --------------
 drivers/tty/serial/ar933x_uart.c             |  4 ----
 drivers/tty/serial/arc_uart.c                |  4 ----
 drivers/tty/serial/atmel_serial.c            | 15 ---------------
 drivers/tty/serial/atmel_serial.h            |  5 -----
 drivers/tty/serial/bcm63xx_uart.c            |  4 ----
 drivers/tty/serial/bfin_sport_uart.c         |  2 --
 drivers/tty/serial/bfin_sport_uart.h         |  2 --
 drivers/tty/serial/bfin_uart.c               |  2 --
 drivers/tty/serial/clps711x.c                |  5 -----
 drivers/tty/serial/cpm_uart/cpm_uart.h       |  5 -----
 drivers/tty/serial/cpm_uart/cpm_uart_core.c  | 15 ---------------
 drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c  | 15 ---------------
 drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c  | 15 ---------------
 drivers/tty/serial/digicolor-usart.c         |  5 -----
 drivers/tty/serial/earlycon-arm-semihost.c   | 12 ------------
 drivers/tty/serial/earlycon.c                |  4 ----
 drivers/tty/serial/fsl_lpuart.c              |  5 -----
 drivers/tty/serial/icom.c                    | 15 ---------------
 drivers/tty/serial/icom.h                    | 14 --------------
 drivers/tty/serial/ifx6x60.c                 | 14 --------------
 drivers/tty/serial/ifx6x60.h                 | 17 -----------------
 drivers/tty/serial/imx.c                     | 10 ----------
 drivers/tty/serial/ioc3_serial.c             |  4 ----
 drivers/tty/serial/ioc4_serial.c             |  4 ----
 drivers/tty/serial/jsm/jsm.h                 | 10 ----------
 drivers/tty/serial/jsm/jsm_cls.c             | 10 ----------
 drivers/tty/serial/jsm/jsm_driver.c          | 10 ----------
 drivers/tty/serial/jsm/jsm_neo.c             | 10 ----------
 drivers/tty/serial/jsm/jsm_tty.c             | 10 ----------
 drivers/tty/serial/kgdb_nmi.c                |  4 ----
 drivers/tty/serial/kgdboc.c                  |  4 ----
 drivers/tty/serial/lantiq.c                  | 13 -------------
 drivers/tty/serial/lpc32xx_hs.c              | 10 ----------
 drivers/tty/serial/m32r_sio.c                |  5 -----
 drivers/tty/serial/m32r_sio_reg.h            |  3 ---
 drivers/tty/serial/max3100.c                 |  6 ------
 drivers/tty/serial/max310x.c                 |  5 -----
 drivers/tty/serial/mcf.c                     |  5 -----
 drivers/tty/serial/men_z135_uart.c           |  4 ----
 drivers/tty/serial/meson_uart.c              | 10 ----------
 drivers/tty/serial/mpc52xx_uart.c            |  4 ----
 drivers/tty/serial/mps2-uart.c               |  4 ----
 drivers/tty/serial/mpsc.c                    |  5 +----
 drivers/tty/serial/msm_serial.c              |  9 ---------
 drivers/tty/serial/mux.c                     |  5 -----
 drivers/tty/serial/mvebu-uart.c              | 12 ------------
 drivers/tty/serial/mxs-auart.c               |  4 ----
 drivers/tty/serial/netx-serial.c             | 13 -------------
 drivers/tty/serial/omap-serial.c             |  5 -----
 drivers/tty/serial/owl-uart.c                | 13 -------------
 drivers/tty/serial/pch_uart.c                | 13 -------------
 drivers/tty/serial/pic32_uart.c              |  2 --
 drivers/tty/serial/pic32_uart.h              |  2 --
 drivers/tty/serial/pmac_zilog.c              | 14 --------------
 drivers/tty/serial/pnx8xxx_uart.c            |  5 -----
 drivers/tty/serial/pxa.c                     |  5 -----
 drivers/tty/serial/rp2.c                     |  4 ----
 drivers/tty/serial/sa1100.c                  | 14 --------------
 drivers/tty/serial/samsung.c                 |  4 ----
 drivers/tty/serial/samsung.h                 |  4 ----
 drivers/tty/serial/sb1250-duart.c            |  5 -----
 drivers/tty/serial/sc16is7xx.c               |  6 ------
 drivers/tty/serial/sccnxp.c                  |  5 -----
 drivers/tty/serial/serial-tegra.c            | 12 ------------
 drivers/tty/serial/serial_core.c             | 14 --------------
 drivers/tty/serial/serial_ks8695.c           |  6 ------
 drivers/tty/serial/serial_mctrl_gpio.c       | 10 ----------
 drivers/tty/serial/serial_mctrl_gpio.h       | 11 -----------
 drivers/tty/serial/serial_txx9.c             |  4 ----
 drivers/tty/serial/sh-sci.c                  |  4 ----
 drivers/tty/serial/sirfsoc_uart.c            |  2 --
 drivers/tty/serial/sirfsoc_uart.h            |  2 --
 drivers/tty/serial/sn_console.c              | 19 -------------------
 drivers/tty/serial/sprd_serial.c             |  9 ---------
 drivers/tty/serial/st-asc.c                  |  6 ------
 drivers/tty/serial/stm32-usart.c             |  1 -
 drivers/tty/serial/stm32-usart.h             |  1 -
 drivers/tty/serial/tilegx.c                  | 10 ----------
 drivers/tty/serial/timbuart.c                | 13 -------------
 drivers/tty/serial/timbuart.h                | 13 -------------
 drivers/tty/serial/uartlite.c                |  4 ----
 drivers/tty/serial/ucc_uart.c                |  5 +----
 drivers/tty/serial/vr41xx_siu.c              | 14 --------------
 drivers/tty/serial/vt8500_serial.c           |  9 ---------
 drivers/tty/serial/xilinx_uartps.c           |  6 ------
 119 files changed, 2 insertions(+), 844 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 36e9ae190fc0..ebfb0bd5bef5 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -5,11 +5,6 @@
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
  *  Copyright (C) 2001 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/serial_8250.h>
diff --git a/drivers/tty/serial/8250/8250_accent.c b/drivers/tty/serial/8250/8250_accent.c
index 2c11bc1f49c2..1691f1a57f89 100644
--- a/drivers/tty/serial/8250/8250_accent.c
+++ b/drivers/tty/serial/8250/8250_accent.c
@@ -2,10 +2,6 @@
 /*
  *  Copyright (C) 2005 Russell King.
  *  Data taken from include/asm-i386/serial.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/tty/serial/8250/8250_acorn.c b/drivers/tty/serial/8250/8250_acorn.c
index 5395343fcf15..758c4aa203ab 100644
--- a/drivers/tty/serial/8250/8250_acorn.c
+++ b/drivers/tty/serial/8250/8250_acorn.c
@@ -3,10 +3,6 @@
  *  linux/drivers/serial/acorn.c
  *
  *  Copyright (C) 1996-2003 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/types.h>
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c
index c468bcc4e638..74a408d9db24 100644
--- a/drivers/tty/serial/8250/8250_aspeed_vuart.c
+++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c
@@ -4,11 +4,6 @@
  *
  *    Copyright (C) 2016 Jeremy Kerr <jk@ozlabs.org>, IBM Corp.
  *    Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp.
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
  */
 #include <linux/device.h>
 #include <linux/module.h>
diff --git a/drivers/tty/serial/8250/8250_bcm2835aux.c b/drivers/tty/serial/8250/8250_bcm2835aux.c
index 242ec1883768..bd53661103eb 100644
--- a/drivers/tty/serial/8250/8250_bcm2835aux.c
+++ b/drivers/tty/serial/8250/8250_bcm2835aux.c
@@ -6,11 +6,6 @@
  *
  * Based on 8250_lpc18xx.c:
  * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/8250/8250_boca.c b/drivers/tty/serial/8250/8250_boca.c
index 4123eb887020..a9b97c034653 100644
--- a/drivers/tty/serial/8250/8250_boca.c
+++ b/drivers/tty/serial/8250/8250_boca.c
@@ -2,10 +2,6 @@
 /*
  *  Copyright (C) 2005 Russell King.
  *  Data taken from include/asm-i386/serial.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 08db331c9718..d64afdd93872 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -12,11 +12,6 @@
  *	      userspace-configurable "phantom" ports
  *	      "serial8250" platform devices
  *	      serial8250_register_8250_port() ports
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
index fe9259330886..bfa1a857f3ff 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -3,11 +3,6 @@
  * 8250_dma.c - DMA Engine API support for 8250.c
  *
  * Copyright (C) 2013 Intel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 3b4bc4dd0a89..5bb0c42c88dd 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -5,11 +5,6 @@
  * Copyright 2011 Picochip, Jamie Iles.
  * Copyright 2013 Intel Corporation
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  * The Synopsys DesignWare 8250 has an extra feature whereby it detects if the
  * LCR is written whilst busy.  If it is, then a busy detect interrupt is
  * raised, the LCR needs to be rewritten and the uart status register read.
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 224f8c16612e..362c25ff188a 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -5,10 +5,6 @@
  * (c) Copyright 2004 Hewlett-Packard Development Company, L.P.
  *	Bjorn Helgaas <bjorn.helgaas@hp.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  * Based on the 8250.c serial driver, Copyright (C) 2001 Russell King,
  * and on early_printk.c by Andi Kleen.
  *
diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index 36355b365c51..f6a86f2bc4e5 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -3,19 +3,6 @@
  * Renesas Emma Mobile 8250 driver
  *
  *  Copyright (C) 2012 Magnus Damm
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include <linux/device.h>
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 4d668e202b56..a402878c9f30 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -5,10 +5,6 @@
  *  Based on drivers/tty/serial/8250/8250_pci.c,
  *
  *  Copyright (C) 2017 Sudip Mukherjee, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
  */
 #include <linux/acpi.h>
 #include <linux/dmi.h>
diff --git a/drivers/tty/serial/8250/8250_exar_st16c554.c b/drivers/tty/serial/8250/8250_exar_st16c554.c
index 0b1318b38cdf..933811ebfaac 100644
--- a/drivers/tty/serial/8250/8250_exar_st16c554.c
+++ b/drivers/tty/serial/8250/8250_exar_st16c554.c
@@ -5,10 +5,6 @@
  *
  *  Copyright (C) 2005 Russell King.
  *  Data taken from include/asm-i386/serial.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index 894763f2c69e..be7029f2391e 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -3,11 +3,6 @@
  *  Probe for F81216A LPC to 4 UART
  *
  *  Copyright (C) 2014-2016 Ricardo Ribalda, Qtechnology A/S
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
  */
 #include <linux/module.h>
 #include <linux/pci.h>
diff --git a/drivers/tty/serial/8250/8250_fourport.c b/drivers/tty/serial/8250/8250_fourport.c
index 1d8e936a18b4..3215b9b7afde 100644
--- a/drivers/tty/serial/8250/8250_fourport.c
+++ b/drivers/tty/serial/8250/8250_fourport.c
@@ -2,10 +2,6 @@
 /*
  *  Copyright (C) 2005 Russell King.
  *  Data taken from include/asm-i386/serial.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c
index dafe7aa081b3..6640a4c7ddd1 100644
--- a/drivers/tty/serial/8250/8250_fsl.c
+++ b/drivers/tty/serial/8250/8250_fsl.c
@@ -7,10 +7,6 @@
 /*
  * Freescale 16550 UART "driver", Copyright (C) 2011 Paul Gortmaker.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  * This isn't a full driver; it just provides an alternate IRQ
  * handler to deal with an errata.  Everything else is just
  * using the bog standard 8250 support.
diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index 8eea662d6987..0809ae2aa9b1 100644
--- a/drivers/tty/serial/8250/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
@@ -3,11 +3,6 @@
  *	Serial Device Initialisation for Lasi/Asp/Wax/Dino
  *
  *	(c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002
- *
- *	This program is free software; you can redistribute it and/or modify
- *	it under the terms of the GNU General Public License as published by
- *      the Free Software Foundation; either version 2 of the License, or
- *      (at your option) any later version.
  */
 
 #include <linux/errno.h>
diff --git a/drivers/tty/serial/8250/8250_hub6.c b/drivers/tty/serial/8250/8250_hub6.c
index f75c89ec7ebc..273f59b9bca5 100644
--- a/drivers/tty/serial/8250/8250_hub6.c
+++ b/drivers/tty/serial/8250/8250_hub6.c
@@ -2,10 +2,6 @@
 /*
  *  Copyright (C) 2005 Russell King.
  *  Data taken from include/asm-i386/serial.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/tty/serial/8250/8250_ingenic.c b/drivers/tty/serial/8250/8250_ingenic.c
index 5c993a3af653..6af84900870e 100644
--- a/drivers/tty/serial/8250/8250_ingenic.c
+++ b/drivers/tty/serial/8250/8250_ingenic.c
@@ -4,15 +4,6 @@
  * Copyright (C) 2015 Imagination Technologies
  *
  * Ingenic SoC UART support
- *
- * This program is free software; you can redistribute	 it and/or modify it
- * under  the terms of	 the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the	License, or (at your
- * option) any later version.
- *
- * You should have received a copy of the  GNU General Public License along
- * with this program; if not, write  to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/8250/8250_lpc18xx.c b/drivers/tty/serial/8250/8250_lpc18xx.c
index e34011535a6a..eddf119374e1 100644
--- a/drivers/tty/serial/8250/8250_lpc18xx.c
+++ b/drivers/tty/serial/8250/8250_lpc18xx.c
@@ -7,11 +7,6 @@
  * Based on 8250_mtk.c:
  * Copyright (c) 2014 MundoReader S.L.
  * Matthias Brugger <matthias.bgg@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c
index f4b596da0a3d..98dbc796353f 100644
--- a/drivers/tty/serial/8250/8250_lpss.c
+++ b/drivers/tty/serial/8250/8250_lpss.c
@@ -4,10 +4,6 @@
  *
  * Copyright (C) 2016 Intel Corporation
  * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/bitops.h>
diff --git a/drivers/tty/serial/8250/8250_mid.c b/drivers/tty/serial/8250/8250_mid.c
index b6d326cab3ca..efa0515139f8 100644
--- a/drivers/tty/serial/8250/8250_mid.c
+++ b/drivers/tty/serial/8250/8250_mid.c
@@ -4,10 +4,6 @@
  *
  * Copyright (C) 2015 Intel Corporation
  * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/bitops.h>
diff --git a/drivers/tty/serial/8250/8250_moxa.c b/drivers/tty/serial/8250/8250_moxa.c
index da18dd62e608..1ee4cd94d4fa 100644
--- a/drivers/tty/serial/8250/8250_moxa.c
+++ b/drivers/tty/serial/8250/8250_moxa.c
@@ -3,10 +3,6 @@
  * 8250_moxa.c - MOXA Smartio/Industio MUE multiport serial driver.
  *
  * Author: Mathieu OTHACEHE <m.othacehe@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 34e0f5fc00ee..dd5e1cede2b5 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -4,16 +4,6 @@
  *
  * Copyright (c) 2014 MundoReader S.L.
  * Author: Matthias Brugger <matthias.bgg@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 #include <linux/clk.h>
 #include <linux/io.h>
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 851e5eb19b98..1e67a7e4a5fd 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -3,12 +3,6 @@
  *  Serial Port driver for Open Firmware platform devices
  *
  *    Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp.
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- *
  */
 #include <linux/console.h>
 #include <linux/module.h>
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index c8d6a11fdb51..b7e0e3416641 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -5,10 +5,6 @@
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
  *  Copyright (C) 2001 Russell King, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
  */
 #undef DEBUG
 #include <linux/module.h>
diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index b556f37b9ba9..431e69a5a6a0 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -7,10 +7,6 @@
  *  Copyright (C) 2001 Russell King, All Rights Reserved.
  *
  *  Ported to the Linux PnP Layer - (C) Adam Belay.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
  */
 #include <linux/module.h>
 #include <linux/pci.h>
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 745eda69c918..11434551ac0a 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -5,11 +5,6 @@
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *  Split from 8250_core.c, Copyright (C) 2001 Russell King.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  * A note about mapbase / membase
  *
  *  mapbase is the physical address of the IO port.
diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index 5ca660c04a9d..b9bcbe20a2be 100644
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -8,12 +8,6 @@
  *  Copyright:	(C) 2003 Monta Vista Software, Inc.
  *
  *  Based on drivers/serial/8250.c by Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  */
 
 #include <linux/device.h>
diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index b4114f57d23a..45ef506293ae 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -1,16 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index ef444aff77c5..c90e503d6b57 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -7,11 +7,6 @@
  * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com>
  * (C) Copyright 2008, Thomas Chou <thomas@wytron.com.tw>
  * (C) Copyright 2010, Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index f1efcfc65a1e..b88b05f8e81e 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -7,11 +7,6 @@
  * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com>
  * (C) Copyright 2008, Thomas Chou <thomas@wytron.com.tw>
  * (C) Copyright 2010, Tobias Klauser <tklauser@distanz.ch>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index a64a20c8e28b..2c37d11726ab 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -7,20 +7,6 @@
  *  Copyright 1999 ARM Limited
  *  Copyright (C) 2000 Deep Blue Solutions Ltd.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  * This is a generic driver for ARM AMBA-type serial ports.  They
  * have a lot of 16550-like features, but are not register compatible.
  * Note that although they do have CTS, DCD and DSR inputs, they do
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index dac3a1138e45..04af8de8617e 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -8,20 +8,6 @@
  *  Copyright (C) 2000 Deep Blue Solutions Ltd.
  *  Copyright (C) 2010 ST-Ericsson SA
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  * This is a generic driver for ARM AMBA-type serial ports.  They
  * have a lot of 16550-like features, but are not register compatible.
  * Note that although they do have CTS, DCD and DSR inputs, they do
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 15cd1a3ea6bf..db5df3d54818 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -5,10 +5,6 @@
  *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
  *
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 54d979ba4657..2599f9ecccfe 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -4,10 +4,6 @@
  *
  * Copyright (C) 2010-2012 Synopsys, Inc. (www.synopsys.com)
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  * vineetg: July 10th 2012
  *  -Decoupled the driver from arch/arc
  *    +Using platform_get_resource() for irq/membase (thx to bfin_uart.c)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index a4baa0fdaa16..efa25611ca0c 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -7,21 +7,6 @@
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
  *  DMA support added by Chip Coldwell.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 #include <linux/tty.h>
 #include <linux/ioport.h>
diff --git a/drivers/tty/serial/atmel_serial.h b/drivers/tty/serial/atmel_serial.h
index b4e0e57a0a79..ba3a2437cde4 100644
--- a/drivers/tty/serial/atmel_serial.h
+++ b/drivers/tty/serial/atmel_serial.h
@@ -7,11 +7,6 @@
  *
  * USART registers.
  * Based on AT91RM9200 datasheet revision E.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #ifndef ATMEL_SERIAL_H
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index 474652d26c71..9d1b7bf7378c 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -1,9 +1,5 @@
 // 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
- * for more details.
- *
  * Derived from many drivers using generic_serial interface.
  *
  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index 3401d9d36786..4ccca5d22f4f 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -5,8 +5,6 @@
  * Copyright 2006-2009 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
  */
 
 /*
diff --git a/drivers/tty/serial/bfin_sport_uart.h b/drivers/tty/serial/bfin_sport_uart.h
index 6d9237bb7192..4b12f45d6580 100644
--- a/drivers/tty/serial/bfin_sport_uart.h
+++ b/drivers/tty/serial/bfin_sport_uart.h
@@ -5,8 +5,6 @@
  * Copyright 2006-2008 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
  */
 
 /*
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index ca8e42ec4aaf..4755fa696321 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -5,8 +5,6 @@
  * Copyright 2006-2011 Analog Devices Inc.
  *
  * Enter bugs at http://blackfin.uclinux.org/
- *
- * Licensed under the GPL-2 or later.
  */
 
 #if defined(CONFIG_SERIAL_BFIN_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index 64d58f2765cc..98f193a83392 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -6,11 +6,6 @@
  *
  *  Copyright 1999 ARM Limited
  *  Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #if defined(CONFIG_SERIAL_CLPS711X_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart.h b/drivers/tty/serial/cpm_uart/cpm_uart.h
index 79f1d1128c5a..9f175a92fb5d 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart.h
+++ b/drivers/tty/serial/cpm_uart/cpm_uart.h
@@ -6,11 +6,6 @@
  *
  *  2006 (c) MontaVista Software, Inc.
  *	Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
  */
 #ifndef CPM_UART_H
 #define CPM_UART_H
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index a98d3ab37fac..24a5f05e769b 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -13,21 +13,6 @@
  *            (C) 2004 Intracom, S.A.
  *            (C) 2005-2006 MontaVista Software, Inc.
  *		Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
index 31e952fd98d0..4eba17f3d293 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm1.c
@@ -9,21 +9,6 @@
  *            (C) 2004 Intracom, S.A.
  *            (C) 2006 MontaVista Software, Inc.
  *		Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
index 84f7c8d32ab3..e3bff068dc3c 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_cpm2.c
@@ -9,21 +9,6 @@
  *            (C) 2004 Intracom, S.A.
  *            (C) 2006 MontaVista Software, Inc.
  *		Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c
index c38a16381ff3..f460cca139e2 100644
--- a/drivers/tty/serial/digicolor-usart.c
+++ b/drivers/tty/serial/digicolor-usart.c
@@ -5,11 +5,6 @@
  * Author: Baruch Siach <baruch@tkos.co.il>
  *
  * Copyright (C) 2014 Paradox Innovation Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/earlycon-arm-semihost.c b/drivers/tty/serial/earlycon-arm-semihost.c
index 84780c17a889..fa096c10b591 100644
--- a/drivers/tty/serial/earlycon-arm-semihost.c
+++ b/drivers/tty/serial/earlycon-arm-semihost.c
@@ -6,18 +6,6 @@
  * Adapted for ARM and earlycon:
  * Copyright (C) 2014 Linaro Ltd.
  * Author: Rob Herring <robh@kernel.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <linux/kernel.h>
 #include <linux/console.h>
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index 00d24fd211c0..4c8b80f1c688 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -6,10 +6,6 @@
  * Based on 8250 earlycon:
  * (c) Copyright 2004 Hewlett-Packard Development Company, L.P.
  *	Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 6652af2be6fc..c84e6f0db54e 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -3,11 +3,6 @@
  *  Freescale lpuart serial port driver
  *
  *  Copyright 2012-2014 Freescale Semiconductor, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #if defined(CONFIG_SERIAL_FSL_LPUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index a8fd690fbf29..ad374f7c476d 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -7,21 +7,6 @@
   * Serial device driver.
   *
   * Based on code from serial.c
-  *
-  * This program is free software; you can redistribute it and/or modify
-  * it under the terms of the GNU General Public License as published by
-  * the Free Software Foundation; either version 2 of the License, or
-  * (at your option) any later version.
-  *
-  * This program is distributed in the hope that it will be useful,
-  * but WITHOUT ANY WARRANTY; without even the implied warranty of
-  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  * GNU General Public License for more details.
-  *
-  * You should have received a copy of the GNU General Public License
-  * along with this program; if not, write to the Free Software
-  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
-  *
   */
 #include <linux/module.h>
 #include <linux/kernel.h>
diff --git a/drivers/tty/serial/icom.h b/drivers/tty/serial/icom.h
index da6a38967d2f..8a77e739b333 100644
--- a/drivers/tty/serial/icom.h
+++ b/drivers/tty/serial/icom.h
@@ -5,20 +5,6 @@
  * Copyright (C) 2001 Michael Anderson, IBM Corporation
  *
  * Serial device driver include file.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
 #include <linux/serial_core.h>
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 7075184fa25b..473f4f81d690 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -11,20 +11,6 @@
  * Copyright (C) 2009, 2010 Intel Corp
  * Russ Gorby <russ.gorby@intel.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
- * USA
- *
  * Driver modified by Intel from Option gtm501l_spi.c
  *
  * Notes
diff --git a/drivers/tty/serial/ifx6x60.h b/drivers/tty/serial/ifx6x60.h
index a5346e7672c0..c5a2514212ff 100644
--- a/drivers/tty/serial/ifx6x60.h
+++ b/drivers/tty/serial/ifx6x60.h
@@ -6,23 +6,6 @@
  * Copyright (C) 2009, 2010 Intel Corp
  * Jim Stanley <jim.stanley@intel.com>
  *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
- * USA
- *
- *
- *
  *****************************************************************************/
 #ifndef _IFX6X60_H
 #define _IFX6X60_H
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 9d3a19b8b69a..a67a606c38eb 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -6,16 +6,6 @@
  *
  * Author: Sascha Hauer <sascha@saschahauer.de>
  * Copyright (C) 2004 Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #if defined(CONFIG_SERIAL_IMX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index fcc4bc85dab4..d8a1cdd6a53d 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1,9 +1,5 @@
 // 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
- * for more details.
- *
  * Copyright (C) 2005 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 8804faad5294..db5b979e5a0c 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -1,9 +1,5 @@
 // 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
- * for more details.
- *
  * Copyright (C) 2003-2006 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h
index 588080b05b07..7a128aaa3a66 100644
--- a/drivers/tty/serial/jsm/jsm.h
+++ b/drivers/tty/serial/jsm/jsm.h
@@ -4,16 +4,6 @@
  *
  * Copyright (C) 2004 IBM Corporation. All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
  * Wendy Xiong   <wendyx@us.ibm.com>
diff --git a/drivers/tty/serial/jsm/jsm_cls.c b/drivers/tty/serial/jsm/jsm_cls.c
index 74793234e002..c061a7b7bd23 100644
--- a/drivers/tty/serial/jsm/jsm_cls.c
+++ b/drivers/tty/serial/jsm/jsm_cls.c
@@ -3,16 +3,6 @@
  * Copyright 2003 Digi International (www.digi.com)
  *	Scott H Kilau <Scott_Kilau at digi dot com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
  *	NOTE TO LINUX KERNEL HACKERS:  DO NOT REFORMAT THIS CODE!
  *
  *	This is shared code between Digi's CVS archive and the
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index 0ede8673f5be..592e51d8944e 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -4,16 +4,6 @@
  *
  * Copyright (C) 2004 IBM Corporation. All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
  * Wendy Xiong   <wendyx@us.ibm.com>
diff --git a/drivers/tty/serial/jsm/jsm_neo.c b/drivers/tty/serial/jsm/jsm_neo.c
index b28a0a478d64..4718560b8fdc 100644
--- a/drivers/tty/serial/jsm/jsm_neo.c
+++ b/drivers/tty/serial/jsm/jsm_neo.c
@@ -4,16 +4,6 @@
  *
  * Copyright (C) 2004 IBM Corporation. All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
  * Wendy Xiong   <wendyx@us.ibm.com>
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 251e00ea6b44..469927d37b41 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -4,16 +4,6 @@
  *
  * Copyright (C) 2004 IBM Corporation. All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
  * Contact Information:
  * Scott H Kilau <Scott_Kilau@digi.com>
  * Ananda Venkatarman <mansarov@us.ibm.com>
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index b908d4a24de5..ed2b03058627 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -7,10 +7,6 @@
  *		  Colin Cross <ccross@android.com>
  * Copyright 2012 Linaro Ltd.
  *		  Anton Vorontsov <anton.vorontsov@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index 62d162ae7610..ddb46fa2d07f 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -7,10 +7,6 @@
  * Maintainer: Jason Wessel <jason.wessel@windriver.com>
  *
  * 2007-2008 (c) Jason Wessel - Wind River Systems, Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 #include <linux/kernel.h>
 #include <linux/ctype.h>
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 868abff3db32..044128277248 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -2,19 +2,6 @@
 /*
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  * Copyright (C) 2004 Infineon IFAP DC COM CPE
  * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
  * Copyright (C) 2007 John Crispin <john@phrozen.org>
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index 8b58256ec776..d1d73261575b 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -7,16 +7,6 @@
  *
  * Copyright (C) 2010 NXP Semiconductors
  * Copyright (C) 2012 Roland Stigge
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 62fdeabf8fb6..7b83a8aab495 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -9,11 +9,6 @@
  *
  *  Copyright (C) 2001  Russell King.
  *  Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 /*
diff --git a/drivers/tty/serial/m32r_sio_reg.h b/drivers/tty/serial/m32r_sio_reg.h
index 0fd9727edec3..6eed48828f94 100644
--- a/drivers/tty/serial/m32r_sio_reg.h
+++ b/drivers/tty/serial/m32r_sio_reg.h
@@ -5,9 +5,6 @@
  * Copyright (C) 1992, 1994 by Theodore Ts'o.
  * Copyright (C) 2004  Hirokazu Takata <takata at linux-m32r.org>
  *
- * Redistribution of this file is permitted under the terms of the GNU
- * Public License (GPL)
- *
  * These are the UART port assignments, expressed as offsets from the base
  * register.  These assignments should hold for any serial port based on
  * a 8250, 16450, or 16550(A).
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index ac88fc9ebc9c..27d6049eb6a9 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -3,12 +3,6 @@
  *
  *  Copyright (C) 2008 Christian Pellegrin <chripell@evolware.org>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- *
  * Notes: the MAX3100 doesn't provide an interrupt on CTS so we have
  * to use polling for flow control. TX empty IRQ is unusable, since
  * writing conf clears FIFO buffer and we cannot have this interrupt
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index bd626ec325d5..ecb6513a6505 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -7,11 +7,6 @@
  *  Based on max3100.c, by Christian Pellegrin <chripell@evolware.org>
  *  Based on max3110.c, by Feng Tang <feng.tang@intel.com>
  *  Based on max3107.c, by Aavamobile
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
  */
 
 #include <linux/bitops.h>
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index 9c779768bd16..7dbfb4cde124 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -5,11 +5,6 @@
  *	mcf.c -- Freescale ColdFire UART driver
  *
  *	(C) Copyright 2003-2007, Greg Ungerer <gerg@uclinux.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 /****************************************************************************/
diff --git a/drivers/tty/serial/men_z135_uart.c b/drivers/tty/serial/men_z135_uart.c
index 9387b2c745a0..ef89534dd760 100644
--- a/drivers/tty/serial/men_z135_uart.c
+++ b/drivers/tty/serial/men_z135_uart.c
@@ -4,10 +4,6 @@
  *
  * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
  * Author: Johannes Thumshirn <johannes.thumshirn@men.de>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; version 2 of the License.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ":" fmt
 
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index fe2d12d69efe..7bdd82df5dc9 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -3,16 +3,6 @@
  *  Based on meson_uart.c, by AMLOGIC, INC.
  *
  * Copyright (C) 2014 Carlo Caione <carlo@caione.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #if defined(CONFIG_SERIAL_MESON_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 1c1febdf60ce..3a75ee08d619 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -24,10 +24,6 @@
  *                    Grant Likely <grant.likely@secretlab.ca>
  * Copyright (C) 2004-2006 Sylvain Munaut <tnt@246tNt.com>
  * Copyright (C) 2003 MontaVista, Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #undef DEBUG
diff --git a/drivers/tty/serial/mps2-uart.c b/drivers/tty/serial/mps2-uart.c
index 5d789b584bc5..9f8f63719126 100644
--- a/drivers/tty/serial/mps2-uart.c
+++ b/drivers/tty/serial/mps2-uart.c
@@ -6,10 +6,6 @@
  *
  * Author: Vladimir Murzin <vladimir.murzin@arm.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  * TODO: support for SysRq
  */
 
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 21b28d8e3c02..1f60d6fe4ff2 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -11,10 +11,7 @@
  * taken from PPCBoot (now U-Boot).  Also based on drivers/serial/8250.c
  * by Russell King.
  *
- * 2004 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2004 (c) MontaVista, Software, Inc.
  */
 /*
  * The MPSC interface is much like a typical network controller's interface.
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 76649fea8f6f..ee96cf0d0057 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -5,15 +5,6 @@
  * Copyright (C) 2007 Google, Inc.
  * Author: Robert Love <rlove@google.com>
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #if defined(CONFIG_SERIAL_MSM_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index 14a299688582..3b74369c262f 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -6,11 +6,6 @@
 **	(c) Copyright 2002 Ryan Bradetich
 **	(c) Copyright 2002 Hewlett-Packard Company
 **
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
 ** This Driver currently only supports the console (port 0) on the MUX.
 ** Additional work will be needed on this driver to enable the full
 ** functionality of the MUX.
diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
index 79926a4fa565..a100e98259d7 100644
--- a/drivers/tty/serial/mvebu-uart.c
+++ b/drivers/tty/serial/mvebu-uart.c
@@ -5,18 +5,6 @@
 * Author: Wilson Ding <dingwei@marvell.com>
 * Copyright (C) 2015 Marvell International Ltd.
 * ***************************************************************************
-* This program is free software: you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the Free
-* Software Foundation, either version 2 of the License, or any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-* ***************************************************************************
 */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 2b2b082efb9c..efb4fd3784ed 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -10,10 +10,6 @@
  *	Provide Alphascale ASM9260 support.
  * Copyright 2008-2010 Freescale Semiconductor, Inc.
  * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
  */
 
 #if defined(CONFIG_SERIAL_MXS_AUART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/netx-serial.c b/drivers/tty/serial/netx-serial.c
index 4201938e8aa3..b3556863491f 100644
--- a/drivers/tty/serial/netx-serial.c
+++ b/drivers/tty/serial/netx-serial.c
@@ -1,19 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #if defined(CONFIG_SERIAL_NETX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index b3bba7a67ec4..53d59e9b944a 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -9,11 +9,6 @@
  *	Govindraj R	<govindraj.raja@ti.com>
  *	Thara Gopinath	<thara@ti.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  * Note: This driver is made separate from 8250 driver as we cannot
  * over load 8250 driver with omap platform specific configuration for
  * features like DMA, it makes easier to implement features like DMA and
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index 93fa3095a775..29a6dc6a8d23 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -6,19 +6,6 @@
  * Author: Actions Semi, Inc.
  *
  * Copyright (c) 2016-2017 Andreas Färber
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index e2c04a3334da..760d5dd0aada 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1,19 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
- *
- *This program is free software; you can redistribute it and/or modify
- *it under the terms of the GNU General Public License as published by
- *the Free Software Foundation; version 2 of the License.
- *
- *This program is distributed in the hope that it will be useful,
- *but WITHOUT ANY WARRANTY; without even the implied warranty of
- *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *GNU General Public License for more details.
- *
- *You should have received a copy of the GNU General Public License
- *along with this program; if not, write to the Free Software
- *Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
  */
 #if defined(CONFIG_SERIAL_PCH_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/pic32_uart.c b/drivers/tty/serial/pic32_uart.c
index 9f55c30d1aa6..fd80d999308d 100644
--- a/drivers/tty/serial/pic32_uart.c
+++ b/drivers/tty/serial/pic32_uart.c
@@ -6,8 +6,6 @@
  *
  * Authors:
  *   Sorin-Andrei Pistirica <andrei.pistirica@microchip.com>
- *
- * Licensed under GPLv2 or later.
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/tty/serial/pic32_uart.h b/drivers/tty/serial/pic32_uart.h
index 43dc168dffd7..2f2b56927dc6 100644
--- a/drivers/tty/serial/pic32_uart.h
+++ b/drivers/tty/serial/pic32_uart.h
@@ -6,8 +6,6 @@
  *
  * Authors:
  *   Sorin-Andrei Pistirica <andrei.pistirica@microchip.com>
- *
- * Licensed under GPLv2 or later.
  */
 #ifndef __DT_PIC32_UART_H__
 #define __DT_PIC32_UART_H__
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 3afba70022b4..3d21790d961e 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -14,20 +14,6 @@
  * and once done, I expect that driver to remain fairly stable in
  * the long term, unless we change the driver model again...
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
  * 2004-08-06 Harald Welte <laforge@gnumonks.org>
  *	- Enable BREAK interrupt
  *	- Add support for sysreq
diff --git a/drivers/tty/serial/pnx8xxx_uart.c b/drivers/tty/serial/pnx8xxx_uart.c
index a014de66e34e..f8812389b8a8 100644
--- a/drivers/tty/serial/pnx8xxx_uart.c
+++ b/drivers/tty/serial/pnx8xxx_uart.c
@@ -8,11 +8,6 @@
  *
  * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  * Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of
- * any kind, whether express or implied.
- *
  */
 
 #if defined(CONFIG_SERIAL_PNX8XXX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index dd82ecb7c25d..baf552944d56 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -6,11 +6,6 @@
  *  Created:	Feb 20, 2003
  *  Copyright:	(C) 2003 Monta Vista Software, Inc.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  * Note 1: This driver is made separate from the already too overloaded
  * 8250.c because it needs some kirks of its own and that'll make it
  * easier to add DMA support.
diff --git a/drivers/tty/serial/rp2.c b/drivers/tty/serial/rp2.c
index 2108bf34ff90..520b43b23543 100644
--- a/drivers/tty/serial/rp2.c
+++ b/drivers/tty/serial/rp2.c
@@ -11,10 +11,6 @@
  *
  *   rocketport_infinity_express-linux-1.20.tar.gz
  *     Copyright (C) 2004-2011 Comtrol, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
  */
 
 #include <linux/bitops.h>
diff --git a/drivers/tty/serial/sa1100.c b/drivers/tty/serial/sa1100.c
index abb64ab11116..4e3f169b30cf 100644
--- a/drivers/tty/serial/sa1100.c
+++ b/drivers/tty/serial/sa1100.c
@@ -5,20 +5,6 @@
  *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
  *
  *  Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #if defined(CONFIG_SERIAL_SA1100_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 3a2923cef142..f9fecc5ed0ce 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -4,10 +4,6 @@
  *
  * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
  *	http://armlinux.simtec.co.uk/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
 */
 
 /* Hote on 2410 error handling
diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h
index b0461c096d0a..f93022113f59 100644
--- a/drivers/tty/serial/samsung.h
+++ b/drivers/tty/serial/samsung.h
@@ -7,10 +7,6 @@
  *
  * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics
  *	http://armlinux.simtec.co.uk/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
 */
 
 #include <linux/dmaengine.h>
diff --git a/drivers/tty/serial/sb1250-duart.c b/drivers/tty/serial/sb1250-duart.c
index f3d5b4ebb9d5..329aced26bd8 100644
--- a/drivers/tty/serial/sb1250-duart.c
+++ b/drivers/tty/serial/sb1250-duart.c
@@ -10,11 +10,6 @@
  *
  *	Copyright (c) 2000, 2001, 2002, 2003, 2004  Broadcom Corporation
  *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
  *	References:
  *
  *	"BCM1250/BCM1125/BCM1125H User Manual", Broadcom Corporation
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index f1e216e714ee..65792a3539d0 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -4,12 +4,6 @@
  * Author: Jon Ringle <jringle@gridpoint.com>
  *
  *  Based on max310x.c, by Alexander Shiyan <shc_work@mail.ru>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index a470dbf28c10..d6ae3086c2a2 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -5,11 +5,6 @@
  *  Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
  *
  *  Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #if defined(CONFIG_SERIAL_SCCNXP_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index fae65e76a9f3..af2a29cfbbe9 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -7,18 +7,6 @@
  * Copyright (c) 2012-2013, NVIDIA CORPORATION.  All rights reserved.
  *
  * Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <linux/clk.h>
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index ab1742805719..854995e1cae7 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -6,20 +6,6 @@
  *
  *  Copyright 1999 ARM Limited
  *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include <linux/module.h>
 #include <linux/tty.h>
diff --git a/drivers/tty/serial/serial_ks8695.c b/drivers/tty/serial/serial_ks8695.c
index 9a894e899876..b461d791188c 100644
--- a/drivers/tty/serial/serial_ks8695.c
+++ b/drivers/tty/serial/serial_ks8695.c
@@ -5,12 +5,6 @@
  *  Based on drivers/serial/serial_amba.c, by Kam Lee.
  *
  *  Copyright 2002-2005 Micrel Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  */
 #include <linux/module.h>
 #include <linux/tty.h>
diff --git a/drivers/tty/serial/serial_mctrl_gpio.c b/drivers/tty/serial/serial_mctrl_gpio.c
index 302dda18fcbd..1c06325beaca 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.c
+++ b/drivers/tty/serial/serial_mctrl_gpio.c
@@ -3,16 +3,6 @@
  * Helpers for controlling modem lines via GPIO
  *
  * Copyright (C) 2014 Paratronic S.A.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/err.h>
diff --git a/drivers/tty/serial/serial_mctrl_gpio.h b/drivers/tty/serial/serial_mctrl_gpio.h
index 219eba0223bb..b7d3cca48ede 100644
--- a/drivers/tty/serial/serial_mctrl_gpio.h
+++ b/drivers/tty/serial/serial_mctrl_gpio.h
@@ -3,17 +3,6 @@
  * Helpers for controlling modem lines via GPIO
  *
  * Copyright (C) 2014 Paratronic S.A.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 
 #ifndef __SERIAL_MCTRL_GPIO__
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index 256c61d1c6a6..1b4008d022bf 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -9,10 +9,6 @@
  *  Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com)
  *  Copyright (C) 2000-2002 Toshiba Corporation
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  *  Serial driver for TX3927/TX4927/TX4925/TX4938 internal SIO controller
  */
 
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index af940495addf..31fcc7072a90 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -14,10 +14,6 @@
  *   Modified to support SecureEdge. David McCullough (2002)
  *   Modified to support SH7300 SCIF. Takashi Kusuda (Jun 2003).
  *   Removed SH7300 support (Jul 2007).
- *
- * 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
- * for more details.
  */
 #if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 3e3ea07c54c0..9925b00a9777 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -3,8 +3,6 @@
  * Driver for CSR SiRFprimaII onboard UARTs.
  *
  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- *
- * Licensed under GPLv2 or later.
  */
 
 #include <linux/module.h>
diff --git a/drivers/tty/serial/sirfsoc_uart.h b/drivers/tty/serial/sirfsoc_uart.h
index 6d6251526631..004ca684d3ae 100644
--- a/drivers/tty/serial/sirfsoc_uart.h
+++ b/drivers/tty/serial/sirfsoc_uart.h
@@ -3,8 +3,6 @@
  * Drivers for CSR SiRFprimaII onboard UARTs.
  *
  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- *
- * Licensed under GPLv2 or later.
  */
 #include <linux/bitops.h>
 #include <linux/log2.h>
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
index 81d506d28469..ed78542c4c37 100644
--- a/drivers/tty/serial/sn_console.c
+++ b/drivers/tty/serial/sn_console.c
@@ -8,25 +8,6 @@
  *
  * Copyright (c) 2004-2006 Silicon Graphics, Inc.  All Rights Reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
  * Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
  * Mountain View, CA  94043, or:
  *
diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index a06d50f52ea8..828f1143859c 100644
--- a/drivers/tty/serial/sprd_serial.c
+++ b/drivers/tty/serial/sprd_serial.c
@@ -1,15 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2012-2015 Spreadtrum Communications Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #if defined(CONFIG_SERIAL_SPRD_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index 1f51eef68c85..c763253514e9 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -3,12 +3,6 @@
  * st-asc.c: ST Asynchronous serial controller (ASC) driver
  *
  * Copyright (C) 2003-2013 STMicroelectronics (R&D) Limited
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
  */
 
 #if defined(CONFIG_SERIAL_ST_ASC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 566cd85a99f8..0fa735b60f2d 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -4,7 +4,6 @@
  * Copyright (C) STMicroelectronics SA 2017
  * Authors:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
  *	     Gerald Baeza <gerald.baeza@st.com>
- * License terms:  GNU General Public License (GPL), version 2
  *
  * Inspired by st-asc.c from STMicroelectronics (c)
  */
diff --git a/drivers/tty/serial/stm32-usart.h b/drivers/tty/serial/stm32-usart.h
index 174be6141cef..8a5ff54d0f42 100644
--- a/drivers/tty/serial/stm32-usart.h
+++ b/drivers/tty/serial/stm32-usart.h
@@ -4,7 +4,6 @@
  * Copyright (C) STMicroelectronics SA 2017
  * Authors:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
  *	     Gerald Baeza <gerald_baeza@yahoo.fr>
- * License terms:  GNU General Public License (GPL), version 2
  */
 
 #define DRIVER_NAME "stm32-usart"
diff --git a/drivers/tty/serial/tilegx.c b/drivers/tty/serial/tilegx.c
index 311eea391f57..f0a3ae57f881 100644
--- a/drivers/tty/serial/tilegx.c
+++ b/drivers/tty/serial/tilegx.c
@@ -2,16 +2,6 @@
 /*
  * Copyright 2013 Tilera Corporation. All Rights Reserved.
  *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- *
  * TILEGx UART driver.
  */
 
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index cdbc23fc85e3..19d38b504e27 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -2,19 +2,6 @@
 /*
  * timbuart.c timberdale FPGA UART driver
  * Copyright (c) 2009 Intel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 /* Supports:
diff --git a/drivers/tty/serial/timbuart.h b/drivers/tty/serial/timbuart.h
index 6c642e99abcf..fb00b172117d 100644
--- a/drivers/tty/serial/timbuart.h
+++ b/drivers/tty/serial/timbuart.h
@@ -2,19 +2,6 @@
 /*
  * timbuart.c timberdale FPGA GPIO driver
  * Copyright (c) 2009 Intel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 /* Supports:
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index b7d66e99f2b3..c47db7826189 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -4,10 +4,6 @@
  *
  * Copyright (C) 2006 Peter Korsgaard <jacmet@sunsite.dk>
  * Copyright (C) 2007 Secret Lab Technologies Ltd.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/platform_device.h>
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index b01772712c1d..2b6376e6e5ad 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -4,10 +4,7 @@
  *
  * Author: Timur Tabi <timur@freescale.com>
  *
- * Copyright 2007 Freescale Semiconductor, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * Copyright 2007 Freescale Semiconductor, Inc.
  *
  * This driver adds support for UART devices via Freescale's QUICC Engine
  * found on some Freescale SOCs.
diff --git a/drivers/tty/serial/vr41xx_siu.c b/drivers/tty/serial/vr41xx_siu.c
index fc100ea7eded..6d106e33f842 100644
--- a/drivers/tty/serial/vr41xx_siu.c
+++ b/drivers/tty/serial/vr41xx_siu.c
@@ -5,20 +5,6 @@
  *  Copyright (C) 2004-2008  Yoichi Yuasa <yuasa@linux-mips.org>
  *
  *  Based on drivers/serial/8250.c, by Russell King.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #if defined(CONFIG_SERIAL_VR41XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 334f0f4e20f5..3d58e9b34553 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -5,15 +5,6 @@
  * Based on msm_serial.c, which is:
  * Copyright (C) 2007 Google, Inc.
  * Author: Robert Love <rlove@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #if defined(CONFIG_SERIAL_VT8500_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 028ae96f1443..b9b2bc76bcac 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -4,12 +4,6 @@
  *
  * 2011 - 2014 (C) Xilinx Inc.
  *
- * This program is free software; you can redistribute it
- * and/or modify it under the terms of the GNU General Public
- * License as published by the Free Software Foundation;
- * either version 2 of the License, or (at your option) any
- * later version.
- *
  * This driver has originally been pushed by Xilinx using a Zynq-branding. This
  * still shows in the naming of this file, the kconfig symbols and some symbols
  * in the code.
-- 
cgit v1.2.3


From 7ecc77011c6fb40d3eef7c6a0ebcec61e69b3ec3 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Mon, 6 Nov 2017 11:49:12 +0100
Subject: serial: 8250_fintek: Return -EINVAL on invalid configuration

Hardware does not support having the same RTS level during RX and TX
when RS485 mode is on (URA in Fintek terminology).

The manufacturer has also confirmed that the delays are not enabled if
the RS485 mode is not enabled.

Therefore we should return -EINVAL if the user wants to have the same
value for RTS_ON_SEND and RTS_AFTER_SEND.

Cc: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Cc: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index be7029f2391e..6c7910d8e136 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -197,10 +197,17 @@ static int fintek_8250_rs485_config(struct uart_port *port,
 	if (!pdata)
 		return -EINVAL;
 
-	if (rs485->flags & SER_RS485_ENABLED)
+	/* Hardware do not support same RTS level on send and receive */
+	if (!(rs485->flags & SER_RS485_RTS_ON_SEND) ==
+			!(rs485->flags & SER_RS485_RTS_AFTER_SEND))
+		return -EINVAL;
+
+	if (rs485->flags & SER_RS485_ENABLED) {
 		memset(rs485->padding, 0, sizeof(rs485->padding));
-	else
+		config |= RS485_URA;
+	} else {
 		memset(rs485, 0, sizeof(*rs485));
+	}
 
 	rs485->flags &= SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND |
 			SER_RS485_RTS_AFTER_SEND;
@@ -215,12 +222,6 @@ static int fintek_8250_rs485_config(struct uart_port *port,
 		config |= RXW4C_IRA;
 	}
 
-	if ((!!(rs485->flags & SER_RS485_RTS_ON_SEND)) ==
-			(!!(rs485->flags & SER_RS485_RTS_AFTER_SEND)))
-		rs485->flags &= ~SER_RS485_ENABLED;
-	else
-		config |= RS485_URA;
-
 	if (rs485->flags & SER_RS485_RTS_ON_SEND)
 		config |= RTS_INVERT;
 
-- 
cgit v1.2.3


From 21c4e7f255e38620bb4c5d1119c64114ab280e2e Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Mon, 6 Nov 2017 11:49:13 +0100
Subject: serial: 8250_fintek: Disable delays for ports != 0

According to the datasheet, only the first port supports delay before
send and delay after send.

Reported-by: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index 6c7910d8e136..ae7d86e44b76 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -212,6 +212,12 @@ static int fintek_8250_rs485_config(struct uart_port *port,
 	rs485->flags &= SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND |
 			SER_RS485_RTS_AFTER_SEND;
 
+	/* Only the first port supports delays */
+	if (pdata->index) {
+		rs485->delay_rts_before_send = 0;
+		rs485->delay_rts_after_send = 0;
+	}
+
 	if (rs485->delay_rts_before_send) {
 		rs485->delay_rts_before_send = 1;
 		config |= TXW4C_IRA;
-- 
cgit v1.2.3


From 07a708f0a16f040b319db647452bcb8884cd04be Mon Sep 17 00:00:00 2001
From: "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date: Wed, 8 Nov 2017 11:05:46 +0800
Subject: serial: 8250_fintek: Fix crash with baud rate B0

The 8250_fintek.c is support the Fintek F81866/F81216 with dynamic clock.
But It'll generate "division by zero" exception and crash in
fintek_8250_set_termios() with baud rate 0 on baudrate_table[i] % baud.

It can be tested with following C code:

	...
	struct termios options;

	tcgetattr(fd, &options);
	...
	options.c_cflag = CS8 | CREAD; /* baud rate 0 */
	tcsetattr(fd, TCSANOW, &options);
	tcflush(fd, TCIOFLUSH);

Fixes: 195638b6d44f ("serial: 8250_fintek: UART dynamic clocksource on Fintek F81866")
Reported-by: Lukas Redlinger <rel+kernel@agilox.net>
Cc: Lukas Redlinger <rel+kernel@agilox.net>
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/serial/8250/8250_fintek.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'drivers/tty/serial/8250')

diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c
index ae7d86e44b76..79a4958b3f5c 100644
--- a/drivers/tty/serial/8250/8250_fintek.c
+++ b/drivers/tty/serial/8250/8250_fintek.c
@@ -315,6 +315,13 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
 			F81866_UART_CLK_14_769MHZ, F81866_UART_CLK_18_432MHZ,
 			F81866_UART_CLK_24MHZ };
 
+	/*
+	 * We'll use serial8250_do_set_termios() for baud = 0, otherwise It'll
+	 * crash on baudrate_table[i] % baud with "division by zero".
+	 */
+	if (!baud)
+		goto exit;
+
 	switch (pdata->pid) {
 	case CHIP_ID_F81216H:
 		reg = RS485;
@@ -327,8 +334,7 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
 		dev_warn(port->dev,
 			"%s: pid: %x Not support. use default set_termios.\n",
 			__func__, pdata->pid);
-		serial8250_do_set_termios(port, termios, old);
-		return;
+		goto exit;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) {
@@ -356,6 +362,7 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios,
 		tty_termios_encode_baud_rate(termios, baud, baud);
 	}
 
+exit:
 	serial8250_do_set_termios(port, termios, old);
 }
 
-- 
cgit v1.2.3