TTY: switch tty_insert_flip_char

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_char is the next one to proceed. This one is used all
over the code, so the patch is huge.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

48 files changed, 220 insertions, 212 deletions

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 9d7d00cdfec..2e670d0c536 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -328,9 +328,9 @@ static void receive_chars(struct serial_state *info)
 	     oe = 1;
 	  }
 	}
-	tty_insert_flip_char(tty, ch, flag);
+	tty_insert_flip_char(&info->tport, ch, flag);
 	if (oe == 1)
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(&info->tport, 0, TTY_OVERRUN);
 	tty_flip_buffer_push(tty);
 out:
 	return;
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 0b7573dbf43..d1fe9a1f847 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -492,34 +492,34 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 		if (tty_buffer_request_room(port, 1)) {
 			if (data & info->read_status_mask) {
 				if (data & CyBREAK) {
-					tty_insert_flip_char(tty,
+					tty_insert_flip_char(port,
 						cyy_readb(info, CyRDSR),
 						TTY_BREAK);
 					info->icount.rx++;
 					if (port->flags & ASYNC_SAK)
 						do_SAK(tty);
 				} else if (data & CyFRAME) {
-					tty_insert_flip_char(tty,
+					tty_insert_flip_char(port,
 						cyy_readb(info, CyRDSR),
 						TTY_FRAME);
 					info->icount.rx++;
 					info->idle_stats.frame_errs++;
 				} else if (data & CyPARITY) {
 					/* Pieces of seven... */
-					tty_insert_flip_char(tty,
+					tty_insert_flip_char(port,
 						cyy_readb(info, CyRDSR),
 						TTY_PARITY);
 					info->icount.rx++;
 					info->idle_stats.parity_errs++;
 				} else if (data & CyOVERRUN) {
-					tty_insert_flip_char(tty, 0,
+					tty_insert_flip_char(port, 0,
 							TTY_OVERRUN);
 					info->icount.rx++;
 					/* If the flip buffer itself is
 					   overflowing, we still lose
 					   the next incoming character.
 					 */
-					tty_insert_flip_char(tty,
+					tty_insert_flip_char(port,
 						cyy_readb(info, CyRDSR),
 						TTY_FRAME);
 					info->icount.rx++;
@@ -529,12 +529,12 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 				/* } else if(data & CyTIMEOUT) { */
 				/* } else if(data & CySPECHAR) { */
 				} else {
-					tty_insert_flip_char(tty, 0,
+					tty_insert_flip_char(port, 0,
 							TTY_NORMAL);
 					info->icount.rx++;
 				}
 			} else {
-				tty_insert_flip_char(tty, 0, TTY_NORMAL);
+				tty_insert_flip_char(port, 0, TTY_NORMAL);
 				info->icount.rx++;
 			}
 		} else {
@@ -557,7 +557,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
 		len = tty_buffer_request_room(port, char_count);
 		while (len--) {
 			data = cyy_readb(info, CyRDSR);
-			tty_insert_flip_char(tty, data, TTY_NORMAL);
+			tty_insert_flip_char(port, data, TTY_NORMAL);
 			info->idle_stats.recv_bytes++;
 			info->icount.rx++;
 #ifdef CY_16Y_HACK
@@ -992,7 +992,7 @@ static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
 						new_rx_get);
 				new_rx_get = (new_rx_get + 1) &
 							(rx_bufsize - 1);
-				tty_insert_flip_char(tty, data, TTY_NORMAL);
+				tty_insert_flip_char(port, data, TTY_NORMAL);
 				info->idle_stats.recv_bytes++;
 				info->icount.rx++;
 			}
@@ -1117,17 +1117,17 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
 
 		switch (cmd) {
 		case C_CM_PR_ERROR:
-			tty_insert_flip_char(tty, 0, TTY_PARITY);
+			tty_insert_flip_char(&info->port, 0, TTY_PARITY);
 			info->icount.rx++;
 			special_count++;
 			break;
 		case C_CM_FR_ERROR:
-			tty_insert_flip_char(tty, 0, TTY_FRAME);
+			tty_insert_flip_char(&info->port, 0, TTY_FRAME);
 			info->icount.rx++;
 			special_count++;
 			break;
 		case C_CM_RXBRK:
-			tty_insert_flip_char(tty, 0, TTY_BREAK);
+			tty_insert_flip_char(&info->port, 0, TTY_BREAK);
 			info->icount.rx++;
 			special_count++;
 			break;
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 3d2ea92b850..8c2fe3a0e09 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -672,7 +672,7 @@ int hvc_poll(struct hvc_struct *hp)
 				}
 			}
 #endif /* CONFIG_MAGIC_SYSRQ */
-			tty_insert_flip_char(tty, buf[i], 0);
+			tty_insert_flip_char(&hp->port, buf[i], 0);
 		}
 
 		read_total += n;
diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
index 68357a6e4de..1f528b8ebf5 100644
--- a/drivers/tty/hvc/hvsi.c
+++ b/drivers/tty/hvc/hvsi.c
@@ -329,8 +329,7 @@ static void hvsi_recv_query(struct hvsi_struct *hp, uint8_t *packet)
 	}
 }
 
-static void hvsi_insert_chars(struct hvsi_struct *hp, struct tty_struct *tty,
-		const char *buf, int len)
+static void hvsi_insert_chars(struct hvsi_struct *hp, const char *buf, int len)
 {
 	int i;
 
@@ -346,7 +345,7 @@ static void hvsi_insert_chars(struct hvsi_struct *hp, struct tty_struct *tty,
 			continue;
 		}
 #endif /* CONFIG_MAGIC_SYSRQ */
-		tty_insert_flip_char(tty, c, 0);
+		tty_insert_flip_char(&hp->port, c, 0);
 	}
 }
 
@@ -359,8 +358,7 @@ static void hvsi_insert_chars(struct hvsi_struct *hp, struct tty_struct *tty,
  * revisited.
  */
 #define TTY_THRESHOLD_THROTTLE 128
-static bool hvsi_recv_data(struct hvsi_struct *hp, struct tty_struct *tty,
-		const uint8_t *packet)
+static bool hvsi_recv_data(struct hvsi_struct *hp, const uint8_t *packet)
 {
 	const struct hvsi_header *header = (const struct hvsi_header *)packet;
 	const uint8_t *data = packet + sizeof(struct hvsi_header);
@@ -377,7 +375,7 @@ static bool hvsi_recv_data(struct hvsi_struct *hp, struct tty_struct *tty,
 		datalen = TTY_THRESHOLD_THROTTLE;
 	}
 
-	hvsi_insert_chars(hp, tty, data, datalen);
+	hvsi_insert_chars(hp, data, datalen);
 
 	if (overflow > 0) {
 		/*
@@ -438,9 +436,7 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct *tty,
 			case VS_DATA_PACKET_HEADER:
 				if (!is_open(hp))
 					break;
-				if (tty == NULL)
-					break; /* no tty buffer to put data in */
-				flip = hvsi_recv_data(hp, tty, packet);
+				flip = hvsi_recv_data(hp, packet);
 				break;
 			case VS_CONTROL_PACKET_HEADER:
 				hvsi_recv_control(hp, packet, tty, handshake);
@@ -474,12 +470,12 @@ static int hvsi_load_chunk(struct hvsi_struct *hp, struct tty_struct *tty,
 	return 1;
 }
 
-static void hvsi_send_overflow(struct hvsi_struct *hp, struct tty_struct *tty)
+static void hvsi_send_overflow(struct hvsi_struct *hp)
 {
 	pr_debug("%s: delivering %i bytes overflow\n", __func__,
 			hp->n_throttle);
 
-	hvsi_insert_chars(hp, tty, hp->throttle_buf, hp->n_throttle);
+	hvsi_insert_chars(hp, hp->throttle_buf, hp->n_throttle);
 	hp->n_throttle = 0;
 }
 
@@ -514,7 +510,7 @@ static irqreturn_t hvsi_interrupt(int irq, void *arg)
 	if (tty && hp->n_throttle && !test_bit(TTY_THROTTLED, &tty->flags)) {
 		/* we weren't hung up and we weren't throttled, so we can
 		 * deliver the rest now */
-		hvsi_send_overflow(hp, tty);
+		hvsi_send_overflow(hp);
 		tty_flip_buffer_push(tty);
 	}
 	spin_unlock_irqrestore(&hp->lock, flags);
@@ -1001,7 +997,7 @@ static void hvsi_unthrottle(struct tty_struct *tty)
 
 	spin_lock_irqsave(&hp->lock, flags);
 	if (hp->n_throttle) {
-		hvsi_send_overflow(hp, tty);
+		hvsi_send_overflow(hp);
 		tty_flip_buffer_push(tty);
 	}
 	spin_unlock_irqrestore(&hp->lock, flags);
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index e9fc15f00f4..c70144f55fc 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -634,7 +634,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
 			break;
 
 		case 1:	/* Received Break !!! */
-			tty_insert_flip_char(tty, 0, TTY_BREAK);
+			tty_insert_flip_char(&port->port, 0, TTY_BREAK);
 			if (port->port.flags & ASYNC_SAK)
 				do_SAK(tty);
 			tty_flip_buffer_push(tty);
@@ -658,7 +658,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
 		insw(base, rp, word_count);
 		byte_count -= (word_count << 1);
 		if (count & 0x0001) {
-			tty_insert_flip_char(tty,  inw(base) & 0xff,
+			tty_insert_flip_char(&port->port, inw(base) & 0xff,
 				TTY_NORMAL);
 			byte_count -= 2;
 		}
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index fcaac4870d5..f42492db31c 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1429,7 +1429,7 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
 		goto put;
 
 	if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */
-		tty_insert_flip_char(tty, 0, TTY_BREAK);
+		tty_insert_flip_char(&p->port, 0, TTY_BREAK);
 		tty_schedule_flip(tty);
 	}
 
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 40113868bec..450c4507cb5 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -2079,7 +2079,7 @@ static void mxser_receive_chars(struct tty_struct *tty,
 		}
 		while (gdl--) {
 			ch = inb(port->ioaddr + UART_RX);
-			tty_insert_flip_char(tty, ch, 0);
+			tty_insert_flip_char(&port->port, ch, 0);
 			cnt++;
 		}
 		goto end_intr;
@@ -2118,7 +2118,7 @@ intr_old:
 				} else
 					flag = TTY_BREAK;
 			}
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(&port->port, ch, flag);
 			cnt++;
 			if (cnt >= recv_room) {
 				if (!port->ldisc_stop_rx)
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 4572117988f..769016504c8 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1070,9 +1070,9 @@ static void gsm_process_modem(struct tty_struct *tty, struct gsm_dlci *dlci,
 		if ((mlines & TIOCM_CD) == 0 && (dlci->modem_rx & TIOCM_CD))
 			if (!(tty->termios.c_cflag & CLOCAL))
 				tty_hangup(tty);
-		if (brk & 0x01)
-			tty_insert_flip_char(tty, 0, TTY_BREAK);
 	}
+	if (brk & 0x01)
+		tty_insert_flip_char(&dlci->port, 0, TTY_BREAK);
 	dlci->modem_rx = mlines;
 }
 
@@ -1140,6 +1140,7 @@ static void gsm_control_modem(struct gsm_mux *gsm, u8 *data, int clen)
 
 static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen)
 {
+	struct tty_port *port;
 	struct tty_struct *tty;
 	unsigned int addr = 0 ;
 	u8 bits;
@@ -1163,16 +1164,19 @@ static void gsm_control_rls(struct gsm_mux *gsm, u8 *data, int clen)
 	bits = *dp;
 	if ((bits & 1) == 0)
 		return;
-	/* See if we have an uplink tty */
-	tty = tty_port_tty_get(&gsm->dlci[addr]->port);
 
+	port = &gsm->dlci[addr]->port;
+
+	if (bits & 2)
+		tty_insert_flip_char(port, 0, TTY_OVERRUN);
+	if (bits & 4)
+		tty_insert_flip_char(port, 0, TTY_PARITY);
+	if (bits & 8)
+		tty_insert_flip_char(port, 0, TTY_FRAME);
+
+	/* See if we have an uplink tty */
+	tty = tty_port_tty_get(port);
 	if (tty) {
-		if (bits & 2)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		if (bits & 4)
-			tty_insert_flip_char(tty, 0, TTY_PARITY);
-		if (bits & 8)
-			tty_insert_flip_char(tty, 0, TTY_FRAME);
 		tty_flip_buffer_push(tty);
 		tty_kref_put(tty);
 	}
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index a0c69ab0439..437a6366fb7 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -855,7 +855,7 @@ static int receive_data(enum port_type index, struct nozomi *dc)
 		read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX);
 
 		if (size == 1) {
-			tty_insert_flip_char(tty, buf[0], TTY_NORMAL);
+			tty_insert_flip_char(&port->port, buf[0], TTY_NORMAL);
 			size = 0;
 		} else if (size < RECEIVE_BUF_MAX) {
 			size -= tty_insert_flip_string(tty, (char *) buf, size);
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 77d7bc94afa..5848a767001 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -379,7 +379,8 @@ static void rp_do_receive(struct r_port *info,
 				flag = TTY_OVERRUN;
 			else
 				flag = TTY_NORMAL;
-			tty_insert_flip_char(tty, CharNStat & 0xff, flag);
+			tty_insert_flip_char(&info->port, CharNStat & 0xff,
+					flag);
 			ToRecv--;
 		}
 
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index f99a84526f8..3719273cf0b 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -305,7 +305,7 @@ static void receive_chars(struct m68k_serial *info, struct tty_struct *tty,
 		else if (rx & URX_FRAME_ERROR)
 			flag = TTY_FRAME;
 
-		tty_insert_flip_char(tty, ch, flag);
+		tty_insert_flip_char(&info->tport, ch, flag);
 #ifndef CONFIG_XCOPILOT_BUGS
 	} while((rx = uart->urx.w) & URX_DATA_READY);
 #endif
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index 505c490c0b4..6ca5dd615f9 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -297,10 +297,11 @@ static void ar933x_uart_set_termios(struct uart_port *port,
 
 static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
 {
+	struct tty_port *port = &up->port.state->port;
 	struct tty_struct *tty;
 	int max_count = 256;
 
-	tty = tty_port_tty_get(&up->port.state->port);
+	tty = tty_port_tty_get(port);
 	do {
 		unsigned int rdata;
 		unsigned char ch;
@@ -313,11 +314,6 @@ static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
 		ar933x_uart_write(up, AR933X_UART_DATA_REG,
 				  AR933X_UART_DATA_RX_CSR);
 
-		if (!tty) {
-			/* discard the data if no tty available */
-			continue;
-		}
-
 		up->port.icount.rx++;
 		ch = rdata & AR933X_UART_DATA_TX_RX_MASK;
 
@@ -325,7 +321,7 @@ static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
 			continue;
 
 		if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0)
-			tty_insert_flip_char(tty, ch, TTY_NORMAL);
+			tty_insert_flip_char(port, ch, TTY_NORMAL);
 	} while (max_count-- > 0);
 
 	if (tty) {
diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index c76a226080f..de30b190972 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -235,6 +235,7 @@ static const char *bcm_uart_type(struct uart_port *port)
  */
 static void bcm_uart_do_rx(struct uart_port *port)
 {
+	struct tty_port *port = &port->state->port;
 	struct tty_struct *tty;
 	unsigned int max_count;
 
@@ -242,7 +243,7 @@ static void bcm_uart_do_rx(struct uart_port *port)
 	 * higher than fifo size anyway since we're much faster than
 	 * serial port */
 	max_count = 32;
-	tty = port->state->port.tty;
+	tty = port->tty;
 	do {
 		unsigned int iestat, c, cstat;
 		char flag;
@@ -261,7 +262,7 @@ static void bcm_uart_do_rx(struct uart_port *port)
 			bcm_uart_writel(port, val, UART_CTL_REG);
 
 			port->icount.overrun++;
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 		}
 
 		if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY)))
@@ -300,7 +301,7 @@ static void bcm_uart_do_rx(struct uart_port *port)
 
 
 		if ((cstat & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, c, flag);
+			tty_insert_flip_char(port, c, flag);
 
 	} while (--max_count);
 
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index f5d117379b6..e4d3ac2e899 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -149,7 +149,8 @@ static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate)
 static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
 {
 	struct sport_uart_port *up = dev_id;
-	struct tty_struct *tty = up->port.state->port.tty;
+	struct tty_port *port = &up->port.state->port;
+	struct tty_struct *tty = tport->tty;
 	unsigned int ch;
 
 	spin_lock(&up->port.lock);
@@ -159,7 +160,7 @@ static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id)
 		up->port.icount.rx++;
 
 		if (!uart_handle_sysrq_char(&up->port, ch))
-			tty_insert_flip_char(tty, ch, TTY_NORMAL);
+			tty_insert_flip_char(port, ch, TTY_NORMAL);
 	}
 	tty_flip_buffer_push(tty);
 
@@ -182,7 +183,6 @@ static irqreturn_t sport_uart_tx_irq(int irq, void *dev_id)
 static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
 {
 	struct sport_uart_port *up = dev_id;
-	struct tty_struct *tty = up->port.state->port.tty;
 	unsigned int stat = SPORT_GET_STAT(up);
 
 	spin_lock(&up->port.lock);
@@ -190,7 +190,7 @@ static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
 	/* Overflow in RX FIFO */
 	if (stat & ROVF) {
 		up->port.icount.overrun++;
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(&up->port.state->port, 0, TTY_OVERRUN);
 		SPORT_PUT_STAT(up, ROVF); /* Clear ROVF bit */
 	}
 	/* These should not happen */
@@ -205,6 +205,8 @@ static irqreturn_t sport_uart_err_irq(int irq, void *dev_id)
 	SSYNC();
 
 	spin_unlock(&up->port.lock);
+	/* XXX we don't push the overrun bit to TTY? */
+
 	return IRQ_HANDLED;
 }
 
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 42d5eb0125b..108122f8f3c 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -303,7 +303,7 @@ static void cpm_uart_int_rx(struct uart_port *port)
 			}
 #endif
 		      error_return:
-			tty_insert_flip_char(tty, ch, flg);
+			tty_insert_flip_char(tport, ch, flg);
 
 		}		/* End while (i--) */
 
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 35ee6a2c687..d1230662545 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -1760,8 +1760,7 @@ add_char_and_flag(struct e100_serial *info, unsigned char data, unsigned char fl
 
 		info->icount.rx++;
 	} else {
-		struct tty_struct *tty = info->port.tty;
-		tty_insert_flip_char(tty, data, flag);
+		tty_insert_flip_char(&info->port, data, flag);
 		info->icount.rx++;
 	}
 
@@ -2338,8 +2337,7 @@ more_data:
 					data_in, data_read);
 				char flag = TTY_NORMAL;
 				if (info->errorcode == ERRCODE_INSERT_BREAK) {
-					struct tty_struct *tty = info->port.tty;
-					tty_insert_flip_char(tty, 0, flag);
+					tty_insert_flip_char(&info->port, 0, flag);
 					info->icount.rx++;
 				}
 
@@ -2353,7 +2351,7 @@ more_data:
 					info->icount.frame++;
 					flag = TTY_FRAME;
 				}
-				tty_insert_flip_char(tty, data, flag);
+				tty_insert_flip_char(&info->port, data, flag);
 				info->errorcode = 0;
 			}
 			info->break_detected_cnt = 0;
@@ -2369,7 +2367,7 @@ more_data:
 			log_int(rdpc(), 0, 0);
 		}
 		);
-		tty_insert_flip_char(tty,
+		tty_insert_flip_char(&info->port,
 			IO_EXTRACT(R_SERIAL0_READ, data_in, data_read),
 			TTY_NORMAL);
 	} else {
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index a8cbb267052..bdf67b0cb8b 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -194,8 +194,7 @@ static void efm32_uart_break_ctl(struct uart_port *port, int ctl)
 	/* not possible without fiddling with gpios */
 }
 
-static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port,
-		struct tty_struct *tty)
+static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port)
 {
 	struct uart_port *port = &efm_port->port;
 
@@ -237,8 +236,8 @@ static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port,
 					rxdata & UARTn_RXDATAX_RXDATA__MASK))
 			continue;
 
-		if (tty && (rxdata & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty,
+		if ((rxdata & port->ignore_status_mask) == 0)
+			tty_insert_flip_char(&port->state->port,
 					rxdata & UARTn_RXDATAX_RXDATA__MASK, flag);
 	}
 }
@@ -249,15 +248,16 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data)
 	u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
 	int handled = IRQ_NONE;
 	struct uart_port *port = &efm_port->port;
+	struct tty_port *tport = &port->state->port;
 	struct tty_struct *tty;
 
 	spin_lock(&port->lock);
 
-	tty = tty_kref_get(port->state->port.tty);
+	tty = tty_kref_get(tport->tty);
 
 	if (irqflag & UARTn_IF_RXDATAV) {
 		efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC);
-		efm32_uart_rx_chars(efm_port, tty);
+		efm32_uart_rx_chars(efm_port);
 
 		handled = IRQ_HANDLED;
 	}
@@ -265,8 +265,7 @@ static irqreturn_t efm32_uart_rxirq(int irq, void *data)
 	if (irqflag & UARTn_IF_RXOF) {
 		efm32_uart_write32(efm_port, UARTn_IF_RXOF, UARTn_IFC);
 		port->icount.overrun++;
-		if (tty)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 
 		handled = IRQ_HANDLED;
 	}
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index 72b6334bcf1..2b0b60ff7f0 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -734,7 +734,8 @@ static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port)
 static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
 {
 	short int count, rcv_buff;
-	struct tty_struct *tty = icom_port->uart_port.state->port.tty;
+	struct tty_port *port = &icom_port->uart_port.state->port;
+	struct tty_struct *tty = port->tty;
 	unsigned short int status;
 	struct uart_icount *icount;
 	unsigned long offset;
@@ -812,7 +813,7 @@ static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
 
 		}
 
-		tty_insert_flip_char(tty, *(icom_port->recv_buf + offset + count - 1), flag);
+		tty_insert_flip_char(port, *(icom_port->recv_buf + offset + count - 1), flag);
 
 		if (status & SA_FLAGS_OVERRUN)
 			/*
@@ -820,7 +821,7 @@ static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
 			 * reported immediately, and doesn't
 			 * affect the current character
 			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 ignore_char:
 		icom_port->statStg->rcv[rcv_buff].flags = 0;
 		icom_port->statStg->rcv[rcv_buff].leLength = 0;
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 1a2488495f6..f60c4028b6e 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -517,6 +517,8 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
 	struct imx_port *sport = dev_id;
 	unsigned int rx, flg, ignored = 0;
 	struct tty_struct *tty = sport->port.state->port.tty;
+	struct tty_port *port = &sport->port.state->port;
+	struct tty_struct *tty = port->tty;
 	unsigned long flags, temp;
 
 	spin_lock_irqsave(&sport->port.lock, flags);
@@ -569,7 +571,7 @@ static irqreturn_t imx_rxint(int irq, void *dev_id)
 #endif
 		}
 
-		tty_insert_flip_char(tty, rx, flg);
+		tty_insert_flip_char(port, rx, flg);
 	}
 
 out:
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 3969e54744c..ac1d36cb203 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -631,13 +631,13 @@ void jsm_input(struct jsm_channel *ch)
 				 * format it likes.
 				 */
 				if (*(ch->ch_equeue +tail +i) & UART_LSR_BI)
-					tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i),  TTY_BREAK);
+					tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i),  TTY_BREAK);
 				else if (*(ch->ch_equeue +tail +i) & UART_LSR_PE)
-					tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_PARITY);
+					tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_PARITY);
 				else if (*(ch->ch_equeue +tail +i) & UART_LSR_FE)
-					tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_FRAME);
+					tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_FRAME);
 				else
-					tty_insert_flip_char(tp, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
+					tty_insert_flip_char(port, *(ch->ch_rqueue +tail +i), TTY_NORMAL);
 			}
 		} else {
 			tty_insert_flip_string(tp, ch->ch_rqueue + tail, s) ;
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index 6ac2b797a76..ba2ef627d9c 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -216,7 +216,7 @@ static void kgdb_nmi_tty_receiver(unsigned long data)
 		return;
 
 	while (kfifo_out(&priv->fifo, &ch, 1))
-		tty_insert_flip_char(priv->port.tty, ch, TTY_NORMAL);
+		tty_insert_flip_char(&priv->port, ch, TTY_NORMAL);
 	tty_flip_buffer_push(priv->port.tty);
 
 	tty_kref_put(tty);
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 02da071fe1e..1933fe3c98d 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -162,7 +162,8 @@ lqasc_enable_ms(struct uart_port *port)
 static int
 lqasc_rx_chars(struct uart_port *port)
 {
-	struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tty_port_tty_get(tport);
 	unsigned int ch = 0, rsr = 0, fifocnt;
 
 	if (!tty) {
@@ -208,7 +209,7 @@ lqasc_rx_chars(struct uart_port *port)
 		}
 
 		if ((rsr & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(tport, ch, flag);
 
 		if (rsr & ASCSTATE_ROE)
 			/*
@@ -216,7 +217,7 @@ lqasc_rx_chars(struct uart_port *port)
 			 * immediately, and doesn't affect the current
 			 * character
 			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 	}
 	if (ch != 0)
 		tty_flip_buffer_push(tty);
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index 0e86bff3fe2..5cd180564c0 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -257,8 +257,9 @@ static void __serial_uart_flush(struct uart_port *port)
 
 static void __serial_lpc32xx_rx(struct uart_port *port)
 {
+	struct tty_port *tport = &port->state->port;
 	unsigned int tmp, flag;
-	struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+	struct tty_struct *tty = tty_port_tty_get(tport);
 
 	if (!tty) {
 		/* Discard data: no tty available */
@@ -281,10 +282,10 @@ static void __serial_lpc32xx_rx(struct uart_port *port)
 			       LPC32XX_HSUART_IIR(port->membase));
 			port->icount.frame++;
 			flag = TTY_FRAME;
-			tty_insert_flip_char(tty, 0, TTY_FRAME);
+			tty_insert_flip_char(tport, 0, TTY_FRAME);
 		}
 
-		tty_insert_flip_char(tty, (tmp & 0xFF), flag);
+		tty_insert_flip_char(tport, (tmp & 0xFF), flag);
 
 		tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
 	}
@@ -332,7 +333,8 @@ exit_tx:
 static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)
 {
 	struct uart_port *port = dev_id;
-	struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+	struct tty_port *port = &port->state->port;
+	struct tty_struct *tty = tty_port_tty_get(tport);
 	u32 status;
 
 	spin_lock(&port->lock);
@@ -356,8 +358,8 @@ static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)
 		writel(LPC32XX_HSU_RX_OE_INT,
 		       LPC32XX_HSUART_IIR(port->membase));
 		port->icount.overrun++;
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 		if (tty) {
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
 			tty_schedule_flip(tty);
 		}
 	}
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index b13949ad340..2e9a390f2ac 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -300,7 +300,8 @@ static void m32r_sio_enable_ms(struct uart_port *port)
 
 static void receive_chars(struct uart_sio_port *up, int *status)
 {
-	struct tty_struct *tty = up->port.state->port.tty;
+	struct tty_port *port = &up->port.state->port;
+	struct tty_struct *tty = tport->tty;
 	unsigned char ch;
 	unsigned char flag;
 	int max_count = 256;
@@ -355,7 +356,7 @@ static void receive_chars(struct uart_sio_port *up, int *status)
 		if (uart_handle_sysrq_char(&up->port, ch))
 			goto ignore_char;
 		if ((*status & up->port.ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(port, ch, flag);
 
 		if (*status & UART_LSR_OE) {
 			/*
@@ -363,7 +364,7 @@ static void receive_chars(struct uart_sio_port *up, int *status)
 			 * immediately, and doesn't affect the current
 			 * character.
 			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 		}
 	ignore_char:
 		*status = serial_in(up, UART_LSR);
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index 7c23c4f4c58..0145aeb7721 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -941,7 +941,8 @@ static struct uart_ops mpc52xx_uart_ops = {
 static inline int
 mpc52xx_uart_int_rx_chars(struct uart_port *port)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	unsigned char ch, flag;
 	unsigned short status;
 
@@ -986,14 +987,14 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
 			out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
 
 		}
-		tty_insert_flip_char(tty, ch, flag);
+		tty_insert_flip_char(tport, ch, flag);
 		if (status & MPC52xx_PSC_SR_OE) {
 			/*
 			 * Overrun is special, since it's
 			 * reported immediately, and doesn't
 			 * affect the current character
 			 */
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 			port->icount.overrun++;
 		}
 	}
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 50366863cfa..4bcbc66c48c 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -1040,10 +1040,10 @@ static int mpsc_rx_intr(struct mpsc_port_info *pi)
 						| SDMA_DESC_CMDSTAT_FR
 						| SDMA_DESC_CMDSTAT_OR)))
 				&& !(cmdstat & pi->port.ignore_status_mask)) {
-			tty_insert_flip_char(tty, *bp, flag);
+			tty_insert_flip_char(port, *bp, flag);
 		} else {
 			for (i=0; i<bytes_in; i++)
-				tty_insert_flip_char(tty, *bp++, TTY_NORMAL);
+				tty_insert_flip_char(port, *bp++, TTY_NORMAL);
 
 			pi->port.icount.rx += bytes_in;
 		}
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 95fd39be293..e4eb81a1279 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -91,14 +91,15 @@ static void msm_enable_ms(struct uart_port *port)
 
 static void handle_rx_dm(struct uart_port *port, unsigned int misr)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	unsigned int sr;
 	int count = 0;
 	struct msm_port *msm_port = UART_TO_MSM(port);
 
 	if ((msm_read(port, UART_SR) & UART_SR_OVERRUN)) {
 		port->icount.overrun++;
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 		msm_write(port, UART_CR_CMD_RESET_ERR, UART_CR);
 	}
 
@@ -146,7 +147,8 @@ static void handle_rx_dm(struct uart_port *port, unsigned int misr)
 
 static void handle_rx(struct uart_port *port)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	unsigned int sr;
 
 	/*
@@ -155,7 +157,7 @@ static void handle_rx(struct uart_port *port)
 	 */
 	if ((msm_read(port, UART_SR) & UART_SR_OVERRUN)) {
 		port->icount.overrun++;
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 		msm_write(port, UART_CR_CMD_RESET_ERR, UART_CR);
 	}
 
@@ -186,7 +188,7 @@ static void handle_rx(struct uart_port *port)
 		}
 
 		if (!uart_handle_sysrq_char(port, c))
-			tty_insert_flip_char(tty, c, flag);
+			tty_insert_flip_char(tport, c, flag);
 	}
 
 	tty_flip_buffer_push(tty);
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
index 1fa92284ade..6aa9d470ef5 100644
--- a/drivers/tty/serial/msm_serial_hs.c
+++ b/drivers/tty/serial/msm_serial_hs.c
@@ -908,6 +908,7 @@ static void msm_hs_dmov_rx_callback(struct msm_dmov_cmd *cmd_ptr,
 	unsigned long flags;
 	unsigned int flush;
 	struct tty_struct *tty;
+	struct tty_port *port;
 	struct uart_port *uport;
 	struct msm_hs_port *msm_uport;
 
@@ -917,7 +918,8 @@ static void msm_hs_dmov_rx_callback(struct msm_dmov_cmd *cmd_ptr,
 	spin_lock_irqsave(&uport->lock, flags);
 	clk_enable(msm_uport->clk);
 
-	tty = uport->state->port.tty;
+	port = &uport->state->port;
+	tty = port->tty;
 
 	msm_hs_write(uport, UARTDM_CR_ADDR, STALE_EVENT_DISABLE);
 
@@ -926,7 +928,7 @@ static void msm_hs_dmov_rx_callback(struct msm_dmov_cmd *cmd_ptr,
 	/* overflow is not connect to data in a FIFO */
 	if (unlikely((status & UARTDM_SR_OVERRUN_BMSK) &&
 		     (uport->read_status_mask & CREAD))) {
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(port, 0, TTY_OVERRUN);
 		uport->icount.buf_overrun++;
 		error_f = 1;
 	}
@@ -939,7 +941,7 @@ static void msm_hs_dmov_rx_callback(struct msm_dmov_cmd *cmd_ptr,
 		uport->icount.parity++;
 		error_f = 1;
 		if (uport->ignore_status_mask & IGNPAR)
-			tty_insert_flip_char(tty, 0, TTY_PARITY);
+			tty_insert_flip_char(port, 0, TTY_PARITY);
 	}
 
 	if (error_f)
@@ -1344,7 +1346,6 @@ static irqreturn_t msm_hs_rx_wakeup_isr(int irq, void *dev)
 	unsigned long flags;
 	struct msm_hs_port *msm_uport = dev;
 	struct uart_port *uport = &msm_uport->uport;
-	struct tty_struct *tty = NULL;
 
 	spin_lock_irqsave(&uport->lock, flags);
 	if (msm_uport->clk_state == MSM_HS_CLK_OFF) {
@@ -1361,8 +1362,7 @@ static irqreturn_t msm_hs_rx_wakeup_isr(int irq, void *dev)
 		 * optionally inject char into tty rx */
 		msm_hs_request_clock_on_locked(uport);
 		if (msm_uport->rx_wakeup.inject_rx) {
-			tty = uport->state->port.tty;
-			tty_insert_flip_char(tty,
+			tty_insert_flip_char(&uport->state->port,
 					     msm_uport->rx_wakeup.rx_to_inject,
 					     TTY_NORMAL);
 			queue_work(msm_hs_workqueue, &msm_uport->rx.tty_work);
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index e2775b6df5a..83b21686020 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -242,8 +242,9 @@ static void mux_write(struct uart_port *port)
  */
 static void mux_read(struct uart_port *port)
 {
+	struct tty_port *tport = &port->state->port;
 	int data;
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_struct *tty = tport->tty;
 	__u32 start_count = port->icount.rx;
 
 	while(1) {
@@ -266,7 +267,7 @@ static void mux_read(struct uart_port *port)
 		if (uart_handle_sysrq_char(port, data & 0xffu))
 			continue;
 
-		tty_insert_flip_char(tty, data & 0xFF, TTY_NORMAL);
+		tty_insert_flip_char(tport, data & 0xFF, TTY_NORMAL);
 	}
 	
 	if (start_count != port->icount.rx) {
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index dd4c31d1aee..10d64a3697f 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -128,7 +128,8 @@ static void nwpserial_config_port(struct uart_port *port, int flags)
 static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
 {
 	struct nwpserial_port *up = dev_id;
-	struct tty_struct *tty = up->port.state->port.tty;
+	struct tty_port *port = &up->port.state->port;
+	struct tty_struct *tty = port->tty;
 	irqreturn_t ret;
 	unsigned int iir;
 	unsigned char ch;
@@ -146,7 +147,7 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
 		up->port.icount.rx++;
 		ch = dcr_read(up->dcr_host, UART_RX);
 		if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID)
-			tty_insert_flip_char(tty, ch, TTY_NORMAL);
+			tty_insert_flip_char(port, ch, TTY_NORMAL);
 	} while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
 
 	tty_flip_buffer_push(tty);
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 333c8d012b0..73a3f295e7c 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -229,6 +229,7 @@ static void pmz_interrupt_control(struct uart_pmac_port *uap, int enable)
 
 static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap)
 {
+	struct tty_port *port;
 	struct tty_struct *tty = NULL;
 	unsigned char ch, r1, drop, error, flag;
 	int loops = 0;
@@ -239,7 +240,8 @@ static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap)
 		(void)read_zsdata(uap);
 		return NULL;
 	}
-	tty = uap->port.state->port.tty;
+	port = &uap->port.state->port;
+	tty = port->tty; /* TOCTOU above */
 
 	while (1) {
 		error = 0;
@@ -309,10 +311,10 @@ static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap)
 
 		if (uap->port.ignore_status_mask == 0xff ||
 		    (r1 & uap->port.ignore_status_mask) == 0) {
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(port, ch, flag);
 		}
 		if (r1 & Rx_OVR)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 	next_char:
 		/* We can get stuck in an infinite loop getting char 0 when the
 		 * line is in a wrong HW state, we break that here.
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c
index aced1dd923d..0cd0e4ac12a 100644
--- a/drivers/tty/serial/sc26xx.c
+++ b/drivers/tty/serial/sc26xx.c
@@ -138,14 +138,18 @@ static void sc26xx_disable_irq(struct uart_port *port, int mask)
 
 static struct tty_struct *receive_chars(struct uart_port *port)
 {
+	struct tty_port *tport = NULL;
 	struct tty_struct *tty = NULL;
 	int limit = 10000;
 	unsigned char ch;
 	char flag;
 	u8 status;
 
-	if (port->state != NULL)		/* Unopened serial console */
-		tty = port->state->port.tty;
+	/* FIXME what is this trying to achieve? */
+	if (port->state != NULL) {		/* Unopened serial console */
+		tport = &port->state->port;
+		tty = tport->tty;
+	}
 
 	while (limit-- > 0) {
 		status = READ_SC_PORT(port, SR);
@@ -185,7 +189,7 @@ static struct tty_struct *receive_chars(struct uart_port *port)
 		if (status & port->ignore_status_mask)
 			continue;
 
-		tty_insert_flip_char(tty, ch, flag);
+		tty_insert_flip_char(tport, ch, flag);
 	}
 	return tty;
 }
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index ba7863bbbb4..675343a20f2 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -2792,10 +2792,10 @@ EXPORT_SYMBOL_GPL(uart_handle_cts_change);
 void uart_insert_char(struct uart_port *port, unsigned int status,
 		 unsigned int overrun, unsigned int ch, unsigned int flag)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
 
 	if ((status & port->ignore_status_mask & ~overrun) == 0)
-		if (tty_insert_flip_char(tty, ch, flag) == 0)
+		if (tty_insert_flip_char(tport, ch, flag) == 0)
 			++port->icount.buf_overrun;
 
 	/*
@@ -2803,7 +2803,7 @@ void uart_insert_char(struct uart_port *port, unsigned int status,
 	 * it doesn't affect the current character.
 	 */
 	if (status & ~port->ignore_status_mask & overrun)
-		if (tty_insert_flip_char(tty, 0, TTY_OVERRUN) == 0)
+		if (tty_insert_flip_char(tport, 0, TTY_OVERRUN) == 0)
 			++port->icount.buf_overrun;
 }
 EXPORT_SYMBOL_GPL(uart_insert_char);
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index cf96314770f..ecef748f538 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -620,7 +620,7 @@ static void sci_receive_chars(struct uart_port *port)
 			    sci_port->break_flag)
 				count = 0;
 			else
-				tty_insert_flip_char(tty, c, TTY_NORMAL);
+				tty_insert_flip_char(tport, c, TTY_NORMAL);
 		} else {
 			for (i = 0; i < count; i++) {
 				char c = serial_port_in(port, SCxRDR);
@@ -662,7 +662,7 @@ static void sci_receive_chars(struct uart_port *port)
 				} else
 					flag = TTY_NORMAL;
 
-				tty_insert_flip_char(tty, c, flag);
+				tty_insert_flip_char(tport, c, flag);
 			}
 		}
 
@@ -721,7 +721,8 @@ static int sci_handle_errors(struct uart_port *port)
 {
 	int copied = 0;
 	unsigned short status = serial_port_in(port, SCxSR);
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	struct sci_port *s = to_sci_port(port);
 
 	/*
@@ -732,7 +733,7 @@ static int sci_handle_errors(struct uart_port *port)
 			port->icount.overrun++;
 
 			/* overrun error */
-			if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
+			if (tty_insert_flip_char(tport, 0, TTY_OVERRUN))
 				copied++;
 
 			dev_notice(port->dev, "overrun error");
@@ -756,7 +757,7 @@ static int sci_handle_errors(struct uart_port *port)
 
 				dev_dbg(port->dev, "BREAK detected\n");
 
-				if (tty_insert_flip_char(tty, 0, TTY_BREAK))
+				if (tty_insert_flip_char(tport, 0, TTY_BREAK))
 					copied++;
 			}
 
@@ -764,7 +765,7 @@ static int sci_handle_errors(struct uart_port *port)
 			/* frame error */
 			port->icount.frame++;
 
-			if (tty_insert_flip_char(tty, 0, TTY_FRAME))
+			if (tty_insert_flip_char(tport, 0, TTY_FRAME))
 				copied++;
 
 			dev_notice(port->dev, "frame error\n");
@@ -775,7 +776,7 @@ static int sci_handle_errors(struct uart_port *port)
 		/* parity error */
 		port->icount.parity++;
 
-		if (tty_insert_flip_char(tty, 0, TTY_PARITY))
+		if (tty_insert_flip_char(tport, 0, TTY_PARITY))
 			copied++;
 
 		dev_notice(port->dev, "parity error");
@@ -789,7 +790,8 @@ static int sci_handle_errors(struct uart_port *port)
 
 static int sci_handle_fifo_overrun(struct uart_port *port)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	struct sci_port *s = to_sci_port(port);
 	struct plat_sci_reg *reg;
 	int copied = 0;
@@ -803,7 +805,7 @@ static int sci_handle_fifo_overrun(struct uart_port *port)
 
 		port->icount.overrun++;
 
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 		tty_flip_buffer_push(tty);
 
 		dev_notice(port->dev, "overrun error\n");
@@ -817,7 +819,8 @@ static int sci_handle_breaks(struct uart_port *port)
 {
 	int copied = 0;
 	unsigned short status = serial_port_in(port, SCxSR);
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tport->tty;
 	struct sci_port *s = to_sci_port(port);
 
 	if (uart_handle_break(port))
@@ -832,7 +835,7 @@ static int sci_handle_breaks(struct uart_port *port)
 		port->icount.brk++;
 
 		/* Notify of BREAK */
-		if (tty_insert_flip_char(tty, 0, TTY_BREAK))
+		if (tty_insert_flip_char(tport, 0, TTY_BREAK))
 			copied++;
 
 		dev_dbg(port->dev, "BREAK detected\n");
@@ -1260,8 +1263,7 @@ static void sci_dma_tx_complete(void *arg)
 }
 
 /* Locking: called with port lock held */
-static int sci_dma_rx_push(struct sci_port *s, struct tty_struct *tty,
-			   size_t count)
+static int sci_dma_rx_push(struct sci_port *s, size_t count)
 {
 	struct uart_port *port = &s->port;
 	struct tty_port *tport = &port->state->port;
@@ -1285,7 +1287,7 @@ static int sci_dma_rx_push(struct sci_port *s, struct tty_struct *tty,
 		return room;
 
 	for (i = 0; i < room; i++)
-		tty_insert_flip_char(tty, ((u8 *)sg_virt(&s->sg_rx[active]))[i],
+		tty_insert_flip_char(tport, ((u8 *)sg_virt(&s->sg_rx[active]))[i],
 				     TTY_NORMAL);
 
 	port->icount.rx += room;
@@ -1305,7 +1307,7 @@ static void sci_dma_rx_complete(void *arg)
 
 	spin_lock_irqsave(&port->lock, flags);
 
-	count = sci_dma_rx_push(s, tty, s->buf_len_rx);
+	count = sci_dma_rx_push(s, s->buf_len_rx);
 
 	mod_timer(&s->rx_timer, jiffies + s->rx_timeout);
 
@@ -1418,7 +1420,7 @@ static void work_fn_rx(struct work_struct *work)
 			sh_desc->partial, sh_desc->cookie);
 
 		spin_lock_irqsave(&port->lock, flags);
-		count = sci_dma_rx_push(s, tty, sh_desc->partial);
+		count = sci_dma_rx_push(s, sh_desc->partial);
 		spin_unlock_irqrestore(&port->lock, flags);
 
 		if (count)
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
index 1c6de9f5869..283232c6465 100644
--- a/drivers/tty/serial/sn_console.c
+++ b/drivers/tty/serial/sn_console.c
@@ -457,6 +457,7 @@ static int sn_debug_printf(const char *fmt, ...)
 static void
 sn_receive_chars(struct sn_cons_port *port, unsigned long flags)
 {
+	struct tty_port *tport = NULL;
 	int ch;
 	struct tty_struct *tty;
 
@@ -472,7 +473,8 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags)
 
 	if (port->sc_port.state) {
 		/* The serial_core stuffs are initialized, use them */
-		tty = port->sc_port.state->port.tty;
+		tport = &port->sc_port.state->port;
+		tty = tport->tty;
 	}
 	else {
 		/* Not registered yet - can't pass to tty layer.  */
@@ -517,7 +519,7 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags)
 
 		/* record the character to pass up to the tty layer */
 		if (tty) {
-			if(tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+			if (tty_insert_flip_char(tport, ch, TTY_NORMAL) == 0)
 				break;
 		}
 		port->sc_port.icount.rx++;
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index b9bf9c53f7f..bbb102e3c03 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -99,7 +99,7 @@ static int receive_chars_getchar(struct uart_port *port, struct tty_struct *tty)
 			uart_handle_dcd_change(port, 1);
 		}
 
-		if (tty == NULL) {
+		if (port->state == NULL) {
 			uart_handle_sysrq_char(port, c);
 			continue;
 		}
@@ -109,7 +109,7 @@ static int receive_chars_getchar(struct uart_port *port, struct tty_struct *tty)
 		if (uart_handle_sysrq_char(port, c))
 			continue;
 
-		tty_insert_flip_char(tty, c, TTY_NORMAL);
+		tty_insert_flip_char(&port->state->port, c, TTY_NORMAL);
 	}
 
 	return saw_console_brk;
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index bd8b3b63410..4abc4d43a8e 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -111,6 +111,7 @@ static struct tty_struct *
 receive_chars(struct uart_sunsab_port *up,
 	      union sab82532_irq_status *stat)
 {
+	struct tty_port *port = NULL;
 	struct tty_struct *tty = NULL;
 	unsigned char buf[32];
 	int saw_console_brk = 0;
@@ -118,8 +119,10 @@ receive_chars(struct uart_sunsab_port *up,
 	int count = 0;
 	int i;
 
-	if (up->port.state != NULL)		/* Unopened serial console */
-		tty = up->port.state->port.tty;
+	if (up->port.state != NULL) {		/* Unopened serial console */
+		port = &up->port.state->port;
+		tty = port->tty;
+	}
 
 	/* Read number of BYTES (Character + Status) available. */
 	if (stat->sreg.isr0 & SAB82532_ISR0_RPF) {
@@ -160,11 +163,6 @@ receive_chars(struct uart_sunsab_port *up,
 	for (i = 0; i < count; i++) {
 		unsigned char ch = buf[i], flag;
 
-		if (tty == NULL) {
-			uart_handle_sysrq_char(&up->port, ch);
-			continue;
-		}
-
 		flag = TTY_NORMAL;
 		up->port.icount.rx++;
 
@@ -213,9 +211,9 @@ receive_chars(struct uart_sunsab_port *up,
 
 		if ((stat->sreg.isr0 & (up->port.ignore_status_mask & 0xff)) == 0 &&
 		    (stat->sreg.isr1 & ((up->port.ignore_status_mask >> 8) & 0xff)) == 0)
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(port, ch, flag);
 		if (stat->sreg.isr0 & SAB82532_ISR0_RFO)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 	}
 
 	if (saw_console_brk)
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 220da3f9724..52325968b06 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -318,7 +318,8 @@ static void sunsu_enable_ms(struct uart_port *port)
 static struct tty_struct *
 receive_chars(struct uart_sunsu_port *up, unsigned char *status)
 {
-	struct tty_struct *tty = up->port.state->port.tty;
+	struct tty_port *port = &up->port.state->port;
+	struct tty_struct *tty = port->tty;
 	unsigned char ch, flag;
 	int max_count = 256;
 	int saw_console_brk = 0;
@@ -376,14 +377,14 @@ receive_chars(struct uart_sunsu_port *up, unsigned char *status)
 		if (uart_handle_sysrq_char(&up->port, ch))
 			goto ignore_char;
 		if ((*status & up->port.ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, ch, flag);
+			tty_insert_flip_char(port, ch, flag);
 		if (*status & UART_LSR_OE)
 			/*
 			 * Overrun is special, since it's reported
 			 * immediately, and doesn't affect the current
 			 * character.
 			 */
-			 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			 tty_insert_flip_char(port, 0, TTY_OVERRUN);
 	ignore_char:
 		*status = serial_inp(up, UART_LSR);
 	} while ((*status & UART_LSR_DR) && (max_count-- > 0));
diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index aef4fab957c..4a11be3849f 100644
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -327,13 +327,15 @@ static struct tty_struct *
 sunzilog_receive_chars(struct uart_sunzilog_port *up,
 		       struct zilog_channel __iomem *channel)
 {
+	struct tty_port *port = NULL;
 	struct tty_struct *tty;
 	unsigned char ch, r1, flag;
 
 	tty = NULL;
-	if (up->port.state != NULL &&		/* Unopened serial console */
-	    up->port.state->port.tty != NULL)	/* Keyboard || mouse */
-		tty = up->port.state->port.tty;
+	if (up->port.state != NULL) {		/* Unopened serial console */
+		port = &up->port.state->port;
+		tty = port->tty;		/* mouse => tty is NULL */
+	}
 
 	for (;;) {
 
@@ -366,11 +368,6 @@ sunzilog_receive_chars(struct uart_sunzilog_port *up,
 			continue;
 		}
 
-		if (tty == NULL) {
-			uart_handle_sysrq_char(&up->port, ch);
-			continue;
-		}
-
 		/* A real serial line, record the character and status.  */
 		flag = TTY_NORMAL;
 		up->port.icount.rx++;
@@ -400,10 +397,10 @@ sunzilog_receive_chars(struct uart_sunzilog_port *up,
 
 		if (up->port.ignore_status_mask == 0xff ||
 		    (r1 & up->port.ignore_status_mask) == 0) {
-		    	tty_insert_flip_char(tty, ch, flag);
+		    	tty_insert_flip_char(port, ch, flag);
 		}
 		if (r1 & Rx_OVR)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			tty_insert_flip_char(port, 0, TTY_OVERRUN);
 	}
 
 	return tty;
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index 5be0d68fece..f40c634f752 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -91,12 +91,12 @@ static void timbuart_flush_buffer(struct uart_port *port)
 
 static void timbuart_rx_chars(struct uart_port *port)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
 
 	while (ioread32(port->membase + TIMBUART_ISR) & RXDP) {
 		u8 ch = ioread8(port->membase + TIMBUART_RXFIFO);
 		port->icount.rx++;
-		tty_insert_flip_char(tty, ch, TTY_NORMAL);
+		tty_insert_flip_char(tport, ch, TTY_NORMAL);
 	}
 
 	spin_unlock(&port->lock);
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 89eee43c4e2..5caf1f0ebc8 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -66,7 +66,7 @@ static struct uart_port ulite_ports[ULITE_NR_UARTS];
 
 static int ulite_receive(struct uart_port *port, int stat)
 {
-	struct tty_struct *tty = port->state->port.tty;
+	struct tty_port *tport = &port->state->port;
 	unsigned char ch = 0;
 	char flag = TTY_NORMAL;
 
@@ -103,13 +103,13 @@ static int ulite_receive(struct uart_port *port, int stat)
 	stat &= ~port->ignore_status_mask;
 
 	if (stat & ULITE_STATUS_RXVALID)
-		tty_insert_flip_char(tty, ch, flag);
+		tty_insert_flip_char(tport, ch, flag);
 
 	if (stat & ULITE_STATUS_FRAME)
-		tty_insert_flip_char(tty, 0, TTY_FRAME);
+		tty_insert_flip_char(tport, 0, TTY_FRAME);
 
 	if (stat & ULITE_STATUS_OVERRUN)
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 
 	return 1;
 }
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index ed047d9ab1e..7a2378627fa 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -513,7 +513,7 @@ static void qe_uart_int_rx(struct uart_qe_port *qe_port)
 				continue;
 
 error_return:
-			tty_insert_flip_char(tty, ch, flg);
+			tty_insert_flip_char(tport, ch, flg);
 
 		}
 
@@ -561,7 +561,7 @@ handle_error:
 
 	/* Overrun does not affect the current character ! */
 	if (status & BD_SC_OV)
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 #ifdef SUPPORT_SYSRQ
 	port->sysrq = 0;
 #endif
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 8fd181436a6..7f4112423f3 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -136,7 +136,8 @@ static void vt8500_enable_ms(struct uart_port *port)
 
 static void handle_rx(struct uart_port *port)
 {
-	struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+	struct tty_port *tport = &port->state->port;
+	struct tty_struct *tty = tty_port_tty_get(tport);
 	if (!tty) {
 		/* Discard data: no tty available */
 		int count = (vt8500_read(port, VT8500_URFIDX) & 0x1f00) >> 8;
@@ -151,7 +152,7 @@ static void handle_rx(struct uart_port *port)
 	 */
 	if ((vt8500_read(port, VT8500_URISR) & RXOVER)) {
 		port->icount.overrun++;
-		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+		tty_insert_flip_char(tport, 0, TTY_OVERRUN);
 	}
 
 	/* and now the main RX loop */
@@ -174,7 +175,7 @@ static void handle_rx(struct uart_port *port)
 		port->icount.rx++;
 
 		if (!uart_handle_sysrq_char(port, c))
-			tty_insert_flip_char(tty, c, flag);
+			tty_insert_flip_char(tport, c, flag);
 	}
 
 	tty_flip_buffer_push(tty);
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index d42b66195a4..33656b35db0 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -1507,13 +1507,13 @@ static void mgsl_isr_receive_data( struct mgsl_struct *info )
 			else if (status & RXSTATUS_FRAMING_ERROR)
 				flag = TTY_FRAME;
 		}	/* end of if (error) */
-		tty_insert_flip_char(tty, DataByte, flag);
+		tty_insert_flip_char(&info->port, DataByte, flag);
 		if (status & RXSTATUS_OVERRUN) {
 			/* Overrun is special, since it's
 			 * reported immediately, and doesn't
 			 * affect the current character
 			 */
-			work += tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+			work += tty_insert_flip_char(&info->port, 0, TTY_OVERRUN);
 		}
 	}
 
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 62a0db7ead0..473d7406db8 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -1893,10 +1893,8 @@ static void rx_async(struct slgt_info *info)
 				else if (status & BIT0)
 					stat = TTY_FRAME;
 			}
-			if (tty) {
-				tty_insert_flip_char(tty, ch, stat);
-				chars++;
-			}
+			tty_insert_flip_char(&info->port, ch, stat);
+			chars++;
 		}
 
 		if (i < count) {
@@ -2182,7 +2180,7 @@ static void isr_serial(struct slgt_info *info)
 			if (info->port.tty) {
 				if (!(status & info->ignore_status_mask)) {
 					if (info->read_status_mask & MASK_BREAK) {
-						tty_insert_flip_char(info->port.tty, 0, TTY_BREAK);
+						tty_insert_flip_char(&info->port, 0, TTY_BREAK);
 						if (info->port.flags & ASYNC_SAK)
 							do_SAK(info->port.tty);
 					}
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index 33b7314cc6c..f5794f3d840 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -2131,13 +2131,11 @@ static void isr_rxint(SLMP_INFO * info)
 			/* process break detection if tty control
 			 * is not set to ignore it
 			 */
-			if ( tty ) {
-				if (!(status & info->ignore_status_mask1)) {
-					if (info->read_status_mask1 & BRKD) {
-						tty_insert_flip_char(tty, 0, TTY_BREAK);
-						if (info->port.flags & ASYNC_SAK)
-							do_SAK(tty);
-					}
+			if (!(status & info->ignore_status_mask1)) {
+				if (info->read_status_mask1 & BRKD) {
+					tty_insert_flip_char(&info->port, 0, TTY_BREAK);
+					if (tty && (info->port.flags & ASYNC_SAK))
+						do_SAK(tty);
 				}
 			}
 		}
@@ -2202,26 +2200,22 @@ static void isr_rxrdy(SLMP_INFO * info)
 
 			status &= info->read_status_mask2;
 
-			if ( tty ) {
-				if (status & PE)
-					flag = TTY_PARITY;
-				else if (status & FRME)
-					flag = TTY_FRAME;
-				if (status & OVRN) {
-					/* Overrun is special, since it's
-					 * reported immediately, and doesn't
-					 * affect the current character
-					 */
-					over = true;
-				}
+			if (status & PE)
+				flag = TTY_PARITY;
+			else if (status & FRME)
+				flag = TTY_FRAME;
+			if (status & OVRN) {
+				/* Overrun is special, since it's
+				 * reported immediately, and doesn't
+				 * affect the current character
+				 */
+				over = true;
 			}
 		}	/* end of if (error) */
 
-		if ( tty ) {
-			tty_insert_flip_char(tty, DataByte, flag);
-			if (over)
-				tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
+		tty_insert_flip_char(&info->port, DataByte, flag);
+		if (over)
+			tty_insert_flip_char(&info->port, 0, TTY_OVERRUN);
 	}
 
 	if ( debug_level >= DEBUG_LEVEL_ISR ) {
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 681765baef6..5aace4d47cb 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -309,8 +309,8 @@ static void put_queue(struct vc_data *vc, int ch)
 {
 	struct tty_struct *tty = vc->port.tty;
 
+	tty_insert_flip_char(&vc->port, ch, 0);
 	if (tty) {
-		tty_insert_flip_char(tty, ch, 0);
 		tty_schedule_flip(tty);
 	}
 }
@@ -323,7 +323,7 @@ static void puts_queue(struct vc_data *vc, char *cp)
 		return;
 
 	while (*cp) {
-		tty_insert_flip_char(tty, *cp, 0);
+		tty_insert_flip_char(&vc->port, *cp, 0);
 		cp++;
 	}
 	tty_schedule_flip(tty);
@@ -586,7 +586,7 @@ static void fn_send_intr(struct vc_data *vc)
 
 	if (!tty)
 		return;
-	tty_insert_flip_char(tty, 0, TTY_BREAK);
+	tty_insert_flip_char(&vc->port, 0, TTY_BREAK);
 	tty_schedule_flip(tty);
 }
 
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 8fd89687d06..811f2505e9e 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1336,7 +1336,7 @@ static void csi_m(struct vc_data *vc)
 static void respond_string(const char *p, struct tty_struct *tty)
 {
 	while (*p) {
-		tty_insert_flip_char(tty, *p, 0);
+		tty_insert_flip_char(tty->port, *p, 0);
 		p++;
 	}
 	tty_schedule_flip(tty);