12 files changed, 2245 insertions, 2822 deletions

diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index 7d1749b0d378..80c4e5101c97 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -5,17 +5,10 @@ comment "S/390 character device drivers"
 config TN3270
 	def_tristate y
 	prompt "Support for locally attached 3270 terminals"
-	depends on CCW
+	depends on CCW && TTY
 	help
 	  Include support for IBM 3270 terminals.
 
-config TN3270_TTY
-	def_tristate y
-	prompt "Support for tty input/output on 3270 terminals"
-	depends on TN3270 && TTY
-	help
-	  Include support for using an IBM 3270 terminal as a Linux tty.
-
 config TN3270_FS
 	def_tristate m
 	prompt "Support for fullscreen applications on 3270 terminals"
@@ -26,7 +19,7 @@ config TN3270_FS
 config TN3270_CONSOLE
 	def_bool y
 	prompt "Support for console on 3270 terminal"
-	depends on TN3270=y && TN3270_TTY=y
+	depends on TN3270=y
 	help
 	  Include support for using an IBM 3270 terminal as a Linux system
 	  console.  Available only if 3270 support is compiled in statically.
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index ce32270082f5..b0f6b3201636 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -21,9 +21,7 @@ obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
 	 sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o sclp_ctl.o \
 	 sclp_early.o sclp_early_core.o sclp_sd.o
 
-obj-$(CONFIG_TN3270) += raw3270.o
-obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
-obj-$(CONFIG_TN3270_TTY) += tty3270.o
+obj-$(CONFIG_TN3270) += raw3270.o con3270.o
 obj-$(CONFIG_TN3270_FS) += fs3270.o
 
 obj-$(CONFIG_TN3215) += con3215.o
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 72ba83c1bc79..0b05cd76b7d0 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -629,7 +629,7 @@ static int raw3215_startup(struct raw3215_info *raw)
 	if (tty_port_initialized(&raw->port))
 		return 0;
 	raw->line_pos = 0;
-	tty_port_set_initialized(&raw->port, 1);
+	tty_port_set_initialized(&raw->port, true);
 	spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
 	raw3215_try_io(raw);
 	spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
@@ -659,7 +659,7 @@ static void raw3215_shutdown(struct raw3215_info *raw)
 		spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
 		remove_wait_queue(&raw->empty_wait, &wait);
 		set_current_state(TASK_RUNNING);
-		tty_port_set_initialized(&raw->port, 1);
+		tty_port_set_initialized(&raw->port, true);
 	}
 	spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
 }
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 10f6a37fb153..d9983550062d 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -1,518 +1,2075 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * IBM/3270 Driver - console view.
+ *    IBM/3270 Driver - tty functions.
  *
- * Author(s):
- *   Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
- *   Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com>
- *     Copyright IBM Corp. 2003, 2009
+ *  Author(s):
+ *    Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
+ *    Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *	-- Copyright IBM Corp. 2003
  */
 
 #include <linux/module.h>
-#include <linux/console.h>
+#include <linux/types.h>
+#include <linux/kdev_t.h>
+#include <linux/tty.h>
+#include <linux/vt_kern.h>
 #include <linux/init.h>
+#include <linux/console.h>
 #include <linux/interrupt.h>
-#include <linux/list.h>
+#include <linux/workqueue.h>
 #include <linux/panic_notifier.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/err.h>
 #include <linux/reboot.h>
+#include <linux/slab.h>
+#include <linux/memblock.h>
+#include <linux/compat.h>
 
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
-#include <asm/cpcmd.h>
 #include <asm/ebcdic.h>
+#include <asm/cpcmd.h>
+#include <linux/uaccess.h>
 
 #include "raw3270.h"
-#include "tty3270.h"
-#include "ctrlchar.h"
+#include "keyboard.h"
+
+#define TTY3270_CHAR_BUF_SIZE 256
+#define TTY3270_OUTPUT_BUFFER_SIZE 4096
+#define TTY3270_SCREEN_PAGES 8 /* has to be power-of-two */
+#define TTY3270_RECALL_SIZE 16 /* has to be power-of-two */
+#define TTY3270_STATUS_AREA_SIZE 40
+
+static struct tty_driver *tty3270_driver;
+static int tty3270_max_index;
+static struct raw3270_fn tty3270_fn;
+
+#define TTY3270_HIGHLIGHT_BLINK		1
+#define TTY3270_HIGHLIGHT_REVERSE	2
+#define TTY3270_HIGHLIGHT_UNDERSCORE	4
+
+struct tty3270_attribute {
+	unsigned char alternate_charset:1;	/* Graphics charset */
+	unsigned char highlight:3;		/* Blink/reverse/underscore */
+	unsigned char f_color:4;		/* Foreground color */
+	unsigned char b_color:4;		/* Background color */
+};
 
-#define CON3270_OUTPUT_BUFFER_SIZE 1024
-#define CON3270_STRING_PAGES 4
+struct tty3270_cell {
+	unsigned char character;
+	struct tty3270_attribute attributes;
+};
 
-static struct raw3270_fn con3270_fn;
+struct tty3270_line {
+	struct tty3270_cell *cells;
+	int len;
+	int dirty;
+};
 
-static bool auto_update = true;
-module_param(auto_update, bool, 0);
+static const unsigned char sfq_read_partition[] = {
+	0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81
+};
+
+#define ESCAPE_NPAR 8
 
 /*
- * Main 3270 console view data structure.
+ * The main tty view data structure.
+ * FIXME:
+ * 1) describe line orientation & lines list concept against screen
+ * 2) describe conversion of screen to lines
+ * 3) describe line format.
  */
-struct con3270 {
+struct tty3270 {
 	struct raw3270_view view;
-	struct list_head freemem;	/* list of free memory for strings. */
+	struct tty_port port;
 
 	/* Output stuff. */
-	struct list_head lines;		/* list of lines. */
-	struct list_head update;	/* list of lines to update. */
-	int line_nr;			/* line number for next update. */
-	int nr_lines;			/* # lines in list. */
+	unsigned char wcc;		/* Write control character. */
 	int nr_up;			/* # lines up in history. */
 	unsigned long update_flags;	/* Update indication bits. */
-	struct string *cline;		/* current output line. */
-	struct string *status;		/* last line of display. */
-	struct raw3270_request *write;	/* single write request. */
-	struct timer_list timer;
+	struct raw3270_request *write;	/* Single write request. */
+	struct timer_list timer;	/* Output delay timer. */
+	char *converted_line;		/* RAW 3270 data stream */
+	unsigned int line_view_start;	/* Start of visible area */
+	unsigned int line_write_start;	/* current write position */
+	unsigned int oops_line;		/* line counter used when print oops */
+
+	/* Current tty screen. */
+	unsigned int cx, cy;		/* Current output position. */
+	struct tty3270_attribute attributes;
+	struct tty3270_attribute saved_attributes;
+	int allocated_lines;
+	struct tty3270_line *screen;
 
 	/* Input stuff. */
-	struct string *input;		/* input string for read request. */
-	struct raw3270_request *read;	/* single read request. */
-	struct raw3270_request *kreset;	/* single keyboard reset request. */
-	struct tasklet_struct readlet;	/* tasklet to issue read request. */
+	char *prompt;			/* Output string for input area. */
+	char *input;			/* Input string for read request. */
+	struct raw3270_request *read;	/* Single read request. */
+	struct raw3270_request *kreset;	/* Single keyboard reset request. */
+	struct raw3270_request *readpartreq;
+	unsigned char inattr;		/* Visible/invisible input. */
+	int throttle, attn;		/* tty throttle/unthrottle. */
+	struct tasklet_struct readlet;	/* Tasklet to issue read request. */
+	struct tasklet_struct hanglet;	/* Tasklet to hang up the tty. */
+	struct kbd_data *kbd;		/* key_maps stuff. */
+
+	/* Escape sequence parsing. */
+	int esc_state, esc_ques, esc_npar;
+	int esc_par[ESCAPE_NPAR];
+	unsigned int saved_cx, saved_cy;
+
+	/* Command recalling. */
+	char **rcl_lines;		/* Array of recallable lines */
+	int rcl_write_index;		/* Write index of recallable items */
+	int rcl_read_index;		/* Read index of recallable items */
+
+	/* Character array for put_char/flush_chars. */
+	unsigned int char_count;
+	char char_buf[TTY3270_CHAR_BUF_SIZE];
 };
 
-static struct con3270 *condev;
-
-/* con3270->update_flags. See con3270_update for details. */
-#define CON_UPDATE_ERASE	1	/* Use EWRITEA instead of WRITE. */
-#define CON_UPDATE_LIST		2	/* Update lines in tty3270->update. */
-#define CON_UPDATE_STATUS	4	/* Update status line. */
-#define CON_UPDATE_ALL		8	/* Recreate screen. */
+/* tty3270->update_flags. See tty3270_update for details. */
+#define TTY_UPDATE_INPUT	0x1	/* Update input line. */
+#define TTY_UPDATE_STATUS	0x2	/* Update status line. */
+#define TTY_UPDATE_LINES	0x4	/* Update visible screen lines */
+#define TTY_UPDATE_ALL		0x7	/* Recreate screen. */
 
-static void con3270_update(struct timer_list *);
+#define TTY3270_INPUT_AREA_ROWS 2
 
 /*
  * Setup timeout for a device. On timeout trigger an update.
  */
-static void con3270_set_timer(struct con3270 *cp, int expires)
+static void tty3270_set_timer(struct tty3270 *tp, int expires)
 {
-	if (expires == 0)
-		del_timer(&cp->timer);
-	else
-		mod_timer(&cp->timer, jiffies + expires);
+	mod_timer(&tp->timer, jiffies + expires);
 }
 
-/*
- * The status line is the last line of the screen. It shows the string
- * "console view" in the lower left corner and "Running"/"More..."/"Holding"
- * in the lower right corner of the screen.
- */
-static void
-con3270_update_status(struct con3270 *cp)
+static int tty3270_tty_rows(struct tty3270 *tp)
 {
-	char *str;
+	return tp->view.rows - TTY3270_INPUT_AREA_ROWS;
+}
 
-	str = (cp->nr_up != 0) ? "History" : "Running";
-	memcpy(cp->status->string + 24, str, 7);
-	codepage_convert(cp->view.ascebc, cp->status->string + 24, 7);
-	cp->update_flags |= CON_UPDATE_STATUS;
+static char *tty3270_add_ba(struct tty3270 *tp, char *cp, char order, int x, int y)
+{
+	*cp++ = order;
+	raw3270_buffer_address(tp->view.dev, cp, x, y);
+	return cp + 2;
 }
 
-static void
-con3270_create_status(struct con3270 *cp)
+static char *tty3270_add_ra(struct tty3270 *tp, char *cp, int x, int y, char c)
+{
+	cp = tty3270_add_ba(tp, cp, TO_RA, x, y);
+	*cp++ = c;
+	return cp;
+}
+
+static char *tty3270_add_sa(struct tty3270 *tp, char *cp, char attr, char value)
+{
+	*cp++ = TO_SA;
+	*cp++ = attr;
+	*cp++ = value;
+	return cp;
+}
+
+static char *tty3270_add_ge(struct tty3270 *tp, char *cp, char c)
+{
+	*cp++ = TO_GE;
+	*cp++ = c;
+	return cp;
+}
+
+static char *tty3270_add_sf(struct tty3270 *tp, char *cp, char type)
+{
+	*cp++ = TO_SF;
+	*cp++ = type;
+	return cp;
+}
+
+static int tty3270_line_increment(struct tty3270 *tp, unsigned int line, unsigned int incr)
+{
+	return (line + incr) & (tp->allocated_lines - 1);
+}
+
+static struct tty3270_line *tty3270_get_write_line(struct tty3270 *tp, unsigned int num)
 {
-	static const unsigned char blueprint[] =
-		{ TO_SBA, 0, 0, TO_SF,TF_LOG,TO_SA,TAT_COLOR, TAC_GREEN,
-		  'c','o','n','s','o','l','e',' ','v','i','e','w',
-		  TO_RA,0,0,0,'R','u','n','n','i','n','g',TO_SF,TF_LOG };
+	return tp->screen + tty3270_line_increment(tp, tp->line_write_start, num);
+}
+
+static struct tty3270_line *tty3270_get_view_line(struct tty3270 *tp, unsigned int num)
+{
+	return tp->screen + tty3270_line_increment(tp, tp->line_view_start, num - tp->nr_up);
+}
 
-	cp->status = alloc_string(&cp->freemem, sizeof(blueprint));
-	/* Copy blueprint to status line */
-	memcpy(cp->status->string, blueprint, sizeof(blueprint));
-	/* Set TO_RA addresses. */
-	raw3270_buffer_address(cp->view.dev, cp->status->string + 1,
-			       cp->view.cols * (cp->view.rows - 1));
-	raw3270_buffer_address(cp->view.dev, cp->status->string + 21,
-			       cp->view.cols * cp->view.rows - 8);
-	/* Convert strings to ebcdic. */
-	codepage_convert(cp->view.ascebc, cp->status->string + 8, 12);
-	codepage_convert(cp->view.ascebc, cp->status->string + 24, 7);
+static int tty3270_input_size(int cols)
+{
+	return cols * 2 - 11;
+}
+
+static void tty3270_update_prompt(struct tty3270 *tp, char *input)
+{
+	strcpy(tp->prompt, input);
+	tp->update_flags |= TTY_UPDATE_INPUT;
+	tty3270_set_timer(tp, 1);
 }
 
 /*
- * Set output offsets to 3270 datastream fragment of a console string.
+ * The input line are the two last lines of the screen.
  */
-static void
-con3270_update_string(struct con3270 *cp, struct string *s, int nr)
+static int tty3270_add_prompt(struct tty3270 *tp)
 {
-	if (s->len < 4) {
-		/* This indicates a bug, but printing a warning would
-		 * cause a deadlock. */
-		return;
+	int count = 0;
+	char *cp;
+
+	cp = tp->converted_line;
+	cp = tty3270_add_ba(tp, cp, TO_SBA, 0, -2);
+	*cp++ = tp->view.ascebc['>'];
+
+	if (*tp->prompt) {
+		cp = tty3270_add_sf(tp, cp, TF_INMDT);
+		count = min_t(int, strlen(tp->prompt),
+			      tp->view.cols * 2 - TTY3270_STATUS_AREA_SIZE - 2);
+		memcpy(cp, tp->prompt, count);
+		cp += count;
+	} else {
+		cp = tty3270_add_sf(tp, cp, tp->inattr);
 	}
-	if (s->string[s->len - 4] != TO_RA)
-		return;
-	raw3270_buffer_address(cp->view.dev, s->string + s->len - 3,
-			       cp->view.cols * (nr + 1));
+	*cp++ = TO_IC;
+	/* Clear to end of input line. */
+	if (count < tp->view.cols * 2 - 11)
+		cp = tty3270_add_ra(tp, cp, -TTY3270_STATUS_AREA_SIZE, -1, 0);
+	return cp - tp->converted_line;
+}
+
+static char *tty3270_ebcdic_convert(struct tty3270 *tp, char *d, char *s)
+{
+	while (*s)
+		*d++ = tp->view.ascebc[(int)*s++];
+	return d;
 }
 
 /*
- * Rebuild update list to print all lines.
+ * The status line is the last line of the screen. It shows the string
+ * "Running"/"History X" in the lower right corner of the screen.
  */
-static void
-con3270_rebuild_update(struct con3270 *cp)
+static int tty3270_add_status(struct tty3270 *tp)
 {
-	struct string *s, *n;
-	int nr;
+	char *cp = tp->converted_line;
+	int len;
+
+	cp = tty3270_add_ba(tp, cp, TO_SBA, -TTY3270_STATUS_AREA_SIZE, -1);
+	cp = tty3270_add_sf(tp, cp, TF_LOG);
+	cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, TAC_GREEN);
+	cp = tty3270_ebcdic_convert(tp, cp, " 7");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_REVER);
+	cp = tty3270_ebcdic_convert(tp, cp, "PrevPg");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_RESET);
+	cp = tty3270_ebcdic_convert(tp, cp, " 8");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_REVER);
+	cp = tty3270_ebcdic_convert(tp, cp, "NextPg");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_RESET);
+	cp = tty3270_ebcdic_convert(tp, cp, " 12");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_REVER);
+	cp = tty3270_ebcdic_convert(tp, cp, "Recall");
+	cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_RESET);
+	cp = tty3270_ebcdic_convert(tp, cp, "  ");
+	if (tp->nr_up) {
+		len = sprintf(cp, "History %d", -tp->nr_up);
+		codepage_convert(tp->view.ascebc, cp, len);
+		cp += len;
+	} else {
+		cp = tty3270_ebcdic_convert(tp, cp, oops_in_progress ? "Crashed" : "Running");
+	}
+	cp = tty3270_add_sf(tp, cp, TF_LOG);
+	cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, TAC_RESET);
+	return cp - (char *)tp->converted_line;
+}
 
-	/* 
-	 * Throw away update list and create a new one,
-	 * containing all lines that will fit on the screen.
-	 */
-	list_for_each_entry_safe(s, n, &cp->update, update)
-		list_del_init(&s->update);
-	nr = cp->view.rows - 2 + cp->nr_up;
-	list_for_each_entry_reverse(s, &cp->lines, list) {
-		if (nr < cp->view.rows - 1)
-			list_add(&s->update, &cp->update);
-		if (--nr < 0)
-			break;
+static void tty3270_blank_screen(struct tty3270 *tp)
+{
+	struct tty3270_line *line;
+	int i;
+
+	for (i = 0; i < tty3270_tty_rows(tp); i++) {
+		line = tty3270_get_write_line(tp, i);
+		line->len = 0;
+		line->dirty = 1;
 	}
-	cp->line_nr = 0;
-	cp->update_flags |= CON_UPDATE_LIST;
+	tp->nr_up = 0;
 }
 
 /*
- * Alloc string for size bytes. Free strings from history if necessary.
+ * Write request completion callback.
  */
-static struct string *
-con3270_alloc_string(struct con3270 *cp, size_t size)
+static void tty3270_write_callback(struct raw3270_request *rq, void *data)
 {
-	struct string *s, *n;
+	struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
 
-	s = alloc_string(&cp->freemem, size);
-	if (s)
-		return s;
-	list_for_each_entry_safe(s, n, &cp->lines, list) {
-		list_del(&s->list);
-		if (!list_empty(&s->update))
-			list_del(&s->update);
-		cp->nr_lines--;
-		if (free_string(&cp->freemem, s) >= size)
-			break;
+	if (rq->rc != 0) {
+		/* Write wasn't successful. Refresh all. */
+		tp->update_flags = TTY_UPDATE_ALL;
+		tty3270_set_timer(tp, 1);
 	}
-	s = alloc_string(&cp->freemem, size);
-	BUG_ON(!s);
-	if (cp->nr_up != 0 && cp->nr_up + cp->view.rows > cp->nr_lines) {
-		cp->nr_up = cp->nr_lines - cp->view.rows + 1;
-		con3270_rebuild_update(cp);
-		con3270_update_status(cp);
+	raw3270_request_reset(rq);
+	xchg(&tp->write, rq);
+}
+
+static int tty3270_required_length(struct tty3270 *tp, struct tty3270_line *line)
+{
+	unsigned char f_color, b_color, highlight;
+	struct tty3270_cell *cell;
+	int i, flen = 3;		/* Prefix (TO_SBA). */
+
+	flen += line->len;
+	highlight = 0;
+	f_color = TAC_RESET;
+	b_color = TAC_RESET;
+
+	for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
+		if (cell->attributes.highlight != highlight) {
+			flen += 3;	/* TO_SA to switch highlight. */
+			highlight = cell->attributes.highlight;
+		}
+		if (cell->attributes.f_color != f_color) {
+			flen += 3;	/* TO_SA to switch color. */
+			f_color = cell->attributes.f_color;
+		}
+		if (cell->attributes.b_color != b_color) {
+			flen += 3;	/* TO_SA to switch color. */
+			b_color = cell->attributes.b_color;
+		}
+		if (cell->attributes.alternate_charset)
+			flen += 1;	/* TO_GE to switch to graphics extensions */
 	}
-	return s;
+	if (highlight)
+		flen += 3;	/* TO_SA to reset hightlight. */
+	if (f_color != TAC_RESET)
+		flen += 3;	/* TO_SA to reset color. */
+	if (b_color != TAC_RESET)
+		flen += 3;	/* TO_SA to reset color. */
+	if (line->len < tp->view.cols)
+		flen += 4;	/* Postfix (TO_RA). */
+
+	return flen;
+}
+
+static char *tty3270_add_reset_attributes(struct tty3270 *tp, struct tty3270_line *line,
+					  char *cp, struct tty3270_attribute *attr, int lineno)
+{
+	if (attr->highlight)
+		cp = tty3270_add_sa(tp, cp, TAT_EXTHI, TAX_RESET);
+	if (attr->f_color != TAC_RESET)
+		cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, TAX_RESET);
+	if (attr->b_color != TAC_RESET)
+		cp = tty3270_add_sa(tp, cp, TAT_BGCOLOR, TAX_RESET);
+	if (line->len < tp->view.cols)
+		cp = tty3270_add_ra(tp, cp, 0, lineno + 1, 0);
+	return cp;
+}
+
+static char tty3270_graphics_translate(struct tty3270 *tp, char ch)
+{
+	switch (ch) {
+	case 'q': /* - */
+		return 0xa2;
+	case 'x': /* '|' */
+		return 0x85;
+	case 'l': /* |- */
+		return 0xc5;
+	case 't': /* |_ */
+		return 0xc6;
+	case 'u': /* _| */
+		return 0xd6;
+	case 'k': /* -| */
+		return 0xd5;
+	case 'j':
+		return 0xd4;
+	case 'm':
+		return 0xc4;
+	case 'n': /* + */
+		return 0xd3;
+	case 'v':
+		return 0xc7;
+	case 'w':
+		return 0xd7;
+	default:
+		return ch;
+	}
+}
+
+static char *tty3270_add_attributes(struct tty3270 *tp, struct tty3270_line *line,
+				    struct tty3270_attribute *attr, char *cp, int lineno)
+{
+	const unsigned char colors[16] = {
+		[0] = TAC_DEFAULT,
+		[1] = TAC_RED,
+		[2] = TAC_GREEN,
+		[3] = TAC_YELLOW,
+		[4] = TAC_BLUE,
+		[5] = TAC_PINK,
+		[6] = TAC_TURQ,
+		[7] = TAC_WHITE,
+		[9] = TAC_DEFAULT
+	};
+
+	const unsigned char highlights[8] = {
+		[TTY3270_HIGHLIGHT_BLINK] = TAX_BLINK,
+		[TTY3270_HIGHLIGHT_REVERSE] = TAX_REVER,
+		[TTY3270_HIGHLIGHT_UNDERSCORE] = TAX_UNDER,
+	};
+
+	struct tty3270_cell *cell;
+	int c, i;
+
+	cp = tty3270_add_ba(tp, cp, TO_SBA, 0, lineno);
+
+	for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
+		if (cell->attributes.highlight != attr->highlight) {
+			attr->highlight = cell->attributes.highlight;
+			cp = tty3270_add_sa(tp, cp, TAT_EXTHI, highlights[attr->highlight]);
+		}
+		if (cell->attributes.f_color != attr->f_color) {
+			attr->f_color = cell->attributes.f_color;
+			cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, colors[attr->f_color]);
+		}
+		if (cell->attributes.b_color != attr->b_color) {
+			attr->b_color = cell->attributes.b_color;
+			cp = tty3270_add_sa(tp, cp, TAT_BGCOLOR, colors[attr->b_color]);
+		}
+		c = cell->character;
+		if (cell->attributes.alternate_charset)
+			cp = tty3270_add_ge(tp, cp, tty3270_graphics_translate(tp, c));
+		else
+			*cp++ = tp->view.ascebc[c];
+	}
+	return cp;
+}
+
+static void tty3270_reset_attributes(struct tty3270_attribute *attr)
+{
+	attr->highlight = TAX_RESET;
+	attr->f_color = TAC_RESET;
+	attr->b_color = TAC_RESET;
 }
 
 /*
- * Write completion callback.
+ * Convert a tty3270_line to a 3270 data fragment usable for output.
  */
-static void
-con3270_write_callback(struct raw3270_request *rq, void *data)
+static unsigned int tty3270_convert_line(struct tty3270 *tp, struct tty3270_line *line, int lineno)
 {
-	raw3270_request_reset(rq);
-	xchg(&((struct con3270 *) rq->view)->write, rq);
+	struct tty3270_attribute attr;
+	int flen;
+	char *cp;
+
+	/* Determine how long the fragment will be. */
+	flen = tty3270_required_length(tp, line);
+	if (flen > PAGE_SIZE)
+		return 0;
+	/* Write 3270 data fragment. */
+	tty3270_reset_attributes(&attr);
+	cp = tty3270_add_attributes(tp, line, &attr, tp->converted_line, lineno);
+	cp = tty3270_add_reset_attributes(tp, line, cp, &attr, lineno);
+	return cp - (char *)tp->converted_line;
+}
+
+static void tty3270_update_lines_visible(struct tty3270 *tp, struct raw3270_request *rq)
+{
+	struct tty3270_line *line;
+	int len, i;
+
+	for (i = 0; i < tty3270_tty_rows(tp); i++) {
+		line = tty3270_get_view_line(tp, i);
+		if (!line->dirty)
+			continue;
+		len = tty3270_convert_line(tp, line, i);
+		if (raw3270_request_add_data(rq, tp->converted_line, len))
+			break;
+		line->dirty = 0;
+	}
+	if (i == tty3270_tty_rows(tp)) {
+		for (i = 0; i < tp->allocated_lines; i++)
+			tp->screen[i].dirty = 0;
+		tp->update_flags &= ~TTY_UPDATE_LINES;
+	}
+}
+
+static void tty3270_update_lines_all(struct tty3270 *tp, struct raw3270_request *rq)
+{
+	struct tty3270_line *line;
+	char buf[4];
+	int len, i;
+
+	for (i = 0; i < tp->allocated_lines; i++) {
+		line = tty3270_get_write_line(tp, i + tp->cy + 1);
+		if (!line->dirty)
+			continue;
+		len = tty3270_convert_line(tp, line, tp->oops_line);
+		if (raw3270_request_add_data(rq, tp->converted_line, len))
+			break;
+		line->dirty = 0;
+		if (++tp->oops_line >= tty3270_tty_rows(tp))
+			tp->oops_line = 0;
+	}
+
+	if (i == tp->allocated_lines) {
+		if (tp->oops_line < tty3270_tty_rows(tp)) {
+			tty3270_add_ra(tp, buf, 0, tty3270_tty_rows(tp), 0);
+			if (raw3270_request_add_data(rq, buf, sizeof(buf)))
+				return;
+		}
+		tp->update_flags &= ~TTY_UPDATE_LINES;
+	}
 }
 
 /*
- * Update console display.
+ * Update 3270 display.
  */
-static void
-con3270_update(struct timer_list *t)
+static void tty3270_update(struct timer_list *t)
 {
-	struct con3270 *cp = from_timer(cp, t, timer);
+	struct tty3270 *tp = from_timer(tp, t, timer);
 	struct raw3270_request *wrq;
-	char wcc, prolog[6];
-	unsigned long flags;
-	unsigned long updated;
-	struct string *s, *n;
-	int rc;
+	u8 cmd = TC_WRITE;
+	int rc, len;
 
-	if (!auto_update && !raw3270_view_active(&cp->view))
-		return;
-	if (cp->view.dev)
-		raw3270_activate_view(&cp->view);
-
-	wrq = xchg(&cp->write, 0);
+	wrq = xchg(&tp->write, 0);
 	if (!wrq) {
-		con3270_set_timer(cp, 1);
+		tty3270_set_timer(tp, 1);
 		return;
 	}
 
-	spin_lock_irqsave(&cp->view.lock, flags);
-	updated = 0;
-	if (cp->update_flags & CON_UPDATE_ALL) {
-		con3270_rebuild_update(cp);
-		con3270_update_status(cp);
-		cp->update_flags = CON_UPDATE_ERASE | CON_UPDATE_LIST |
-			CON_UPDATE_STATUS;
-	}
-	if (cp->update_flags & CON_UPDATE_ERASE) {
-		/* Use erase write alternate to initialize display. */
-		raw3270_request_set_cmd(wrq, TC_EWRITEA);
-		updated |= CON_UPDATE_ERASE;
-	} else
-		raw3270_request_set_cmd(wrq, TC_WRITE);
+	spin_lock_irq(&tp->view.lock);
+	if (tp->update_flags == TTY_UPDATE_ALL)
+		cmd = TC_EWRITEA;
 
-	wcc = TW_NONE;
-	raw3270_request_add_data(wrq, &wcc, 1);
+	raw3270_request_set_cmd(wrq, cmd);
+	raw3270_request_add_data(wrq, &tp->wcc, 1);
+	tp->wcc = TW_NONE;
 
 	/*
 	 * Update status line.
 	 */
-	if (cp->update_flags & CON_UPDATE_STATUS)
-		if (raw3270_request_add_data(wrq, cp->status->string,
-					     cp->status->len) == 0)
-			updated |= CON_UPDATE_STATUS;
-
-	if (cp->update_flags & CON_UPDATE_LIST) {
-		prolog[0] = TO_SBA;
-		prolog[3] = TO_SA;
-		prolog[4] = TAT_COLOR;
-		prolog[5] = TAC_TURQ;
-		raw3270_buffer_address(cp->view.dev, prolog + 1,
-				       cp->view.cols * cp->line_nr);
-		raw3270_request_add_data(wrq, prolog, 6);
-		/* Write strings in the update list to the screen. */
-		list_for_each_entry_safe(s, n, &cp->update, update) {
-			if (s != cp->cline)
-				con3270_update_string(cp, s, cp->line_nr);
-			if (raw3270_request_add_data(wrq, s->string,
-						     s->len) != 0)
-				break;
-			list_del_init(&s->update);
-			if (s != cp->cline)
-				cp->line_nr++;
-		}
-		if (list_empty(&cp->update))
-			updated |= CON_UPDATE_LIST;
+	if (tp->update_flags & TTY_UPDATE_STATUS) {
+		len = tty3270_add_status(tp);
+		if (raw3270_request_add_data(wrq, tp->converted_line, len) == 0)
+			tp->update_flags &= ~TTY_UPDATE_STATUS;
+	}
+
+	/*
+	 * Write input line.
+	 */
+	if (tp->update_flags & TTY_UPDATE_INPUT) {
+		len = tty3270_add_prompt(tp);
+		if (raw3270_request_add_data(wrq, tp->converted_line, len) == 0)
+			tp->update_flags &= ~TTY_UPDATE_INPUT;
+	}
+
+	if (tp->update_flags & TTY_UPDATE_LINES) {
+		if (oops_in_progress)
+			tty3270_update_lines_all(tp, wrq);
+		else
+			tty3270_update_lines_visible(tp, wrq);
 	}
-	wrq->callback = con3270_write_callback;
-	rc = raw3270_start(&cp->view, wrq);
+
+	wrq->callback = tty3270_write_callback;
+	rc = raw3270_start(&tp->view, wrq);
 	if (rc == 0) {
-		cp->update_flags &= ~updated;
-		if (cp->update_flags)
-			con3270_set_timer(cp, 1);
+		if (tp->update_flags)
+			tty3270_set_timer(tp, 1);
 	} else {
 		raw3270_request_reset(wrq);
-		xchg(&cp->write, wrq);
+		xchg(&tp->write, wrq);
 	}
-	spin_unlock_irqrestore(&cp->view.lock, flags);
+	spin_unlock_irq(&tp->view.lock);
 }
 
 /*
- * Read tasklet.
+ * Command recalling.
  */
-static void
-con3270_read_tasklet(unsigned long data)
+static void tty3270_rcl_add(struct tty3270 *tp, char *input, int len)
+{
+	char *p;
+
+	if (len <= 0)
+		return;
+	p = tp->rcl_lines[tp->rcl_write_index++];
+	tp->rcl_write_index &= TTY3270_RECALL_SIZE - 1;
+	memcpy(p, input, len);
+	p[len] = '\0';
+	tp->rcl_read_index = tp->rcl_write_index;
+}
+
+static void tty3270_rcl_backward(struct kbd_data *kbd)
+{
+	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
+	int i = 0;
+
+	spin_lock_irq(&tp->view.lock);
+	if (tp->inattr == TF_INPUT) {
+		do {
+			tp->rcl_read_index--;
+			tp->rcl_read_index &= TTY3270_RECALL_SIZE - 1;
+		} while (!*tp->rcl_lines[tp->rcl_read_index] &&
+			 i++ < TTY3270_RECALL_SIZE - 1);
+		tty3270_update_prompt(tp, tp->rcl_lines[tp->rcl_read_index]);
+	}
+	spin_unlock_irq(&tp->view.lock);
+}
+
+/*
+ * Deactivate tty view.
+ */
+static void tty3270_exit_tty(struct kbd_data *kbd)
+{
+	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
+
+	raw3270_deactivate_view(&tp->view);
+}
+
+static void tty3270_redraw(struct tty3270 *tp)
+{
+	int i;
+
+	for (i = 0; i < tty3270_tty_rows(tp); i++)
+		tty3270_get_view_line(tp, i)->dirty = 1;
+	tp->update_flags = TTY_UPDATE_ALL;
+	tty3270_set_timer(tp, 1);
+}
+
+/*
+ * Scroll forward in history.
+ */
+static void tty3270_scroll_forward(struct kbd_data *kbd)
+{
+	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
+
+	spin_lock_irq(&tp->view.lock);
+
+	if (tp->nr_up >= tty3270_tty_rows(tp))
+		tp->nr_up -= tty3270_tty_rows(tp) / 2;
+	else
+		tp->nr_up = 0;
+	tty3270_redraw(tp);
+	spin_unlock_irq(&tp->view.lock);
+}
+
+/*
+ * Scroll backward in history.
+ */
+static void tty3270_scroll_backward(struct kbd_data *kbd)
+{
+	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
+
+	spin_lock_irq(&tp->view.lock);
+	tp->nr_up += tty3270_tty_rows(tp) / 2;
+	if (tp->nr_up > tp->allocated_lines - tty3270_tty_rows(tp))
+		tp->nr_up = tp->allocated_lines - tty3270_tty_rows(tp);
+	tty3270_redraw(tp);
+	spin_unlock_irq(&tp->view.lock);
+}
+
+/*
+ * Pass input line to tty.
+ */
+static void tty3270_read_tasklet(unsigned long data)
 {
+	struct raw3270_request *rrq = (struct raw3270_request *)data;
 	static char kreset_data = TW_KR;
-	struct raw3270_request *rrq;
-	struct con3270 *cp;
-	unsigned long flags;
-	int nr_up, deactivate;
-
-	rrq = (struct raw3270_request *)data;
-	cp = (struct con3270 *) rrq->view;
-	spin_lock_irqsave(&cp->view.lock, flags);
-	nr_up = cp->nr_up;
-	deactivate = 0;
-	/* Check aid byte. */
-	switch (cp->input->string[0]) {
-	case 0x7d:	/* enter: jump to bottom. */
-		nr_up = 0;
-		break;
-	case 0xf3:	/* PF3: deactivate the console view. */
-		deactivate = 1;
+	struct tty3270 *tp = container_of(rrq->view, struct tty3270, view);
+	char *input;
+	int len;
+
+	spin_lock_irq(&tp->view.lock);
+	/*
+	 * Two AID keys are special: For 0x7d (enter) the input line
+	 * has to be emitted to the tty and for 0x6d the screen
+	 * needs to be redrawn.
+	 */
+	input = NULL;
+	len = 0;
+	switch (tp->input[0]) {
+	case AID_ENTER:
+		/* Enter: write input to tty. */
+		input = tp->input + 6;
+		len = tty3270_input_size(tp->view.cols) - 6 - rrq->rescnt;
+		if (tp->inattr != TF_INPUTN)
+			tty3270_rcl_add(tp, input, len);
+		if (tp->nr_up > 0)
+			tp->nr_up = 0;
+		/* Clear input area. */
+		tty3270_update_prompt(tp, "");
+		tty3270_set_timer(tp, 1);
 		break;
-	case 0x6d:	/* clear: start from scratch. */
-		cp->update_flags = CON_UPDATE_ALL;
-		con3270_set_timer(cp, 1);
+	case AID_CLEAR:
+		/* Display has been cleared. Redraw. */
+		tp->update_flags = TTY_UPDATE_ALL;
+		tty3270_set_timer(tp, 1);
+		if (!list_empty(&tp->readpartreq->list))
+			break;
+		raw3270_start_request(&tp->view, tp->readpartreq, TC_WRITESF,
+				      (char *)sfq_read_partition, sizeof(sfq_read_partition));
 		break;
-	case 0xf7:	/* PF7: do a page up in the console log. */
-		nr_up += cp->view.rows - 2;
-		if (nr_up + cp->view.rows - 1 > cp->nr_lines) {
-			nr_up = cp->nr_lines - cp->view.rows + 1;
-			if (nr_up < 0)
-				nr_up = 0;
-		}
+	case AID_READ_PARTITION:
+		raw3270_read_modified_cb(tp->readpartreq, tp->input);
 		break;
-	case 0xf8:	/* PF8: do a page down in the console log. */
-		nr_up -= cp->view.rows - 2;
-		if (nr_up < 0)
-			nr_up = 0;
+	default:
 		break;
 	}
-	if (nr_up != cp->nr_up) {
-		cp->nr_up = nr_up;
-		con3270_rebuild_update(cp);
-		con3270_update_status(cp);
-		con3270_set_timer(cp, 1);
-	}
-	spin_unlock_irqrestore(&cp->view.lock, flags);
+	spin_unlock_irq(&tp->view.lock);
 
 	/* Start keyboard reset command. */
-	raw3270_request_reset(cp->kreset);
-	raw3270_request_set_cmd(cp->kreset, TC_WRITE);
-	raw3270_request_add_data(cp->kreset, &kreset_data, 1);
-	raw3270_start(&cp->view, cp->kreset);
+	raw3270_start_request(&tp->view, tp->kreset, TC_WRITE, &kreset_data, 1);
 
-	if (deactivate)
-		raw3270_deactivate_view(&cp->view);
+	while (len-- > 0)
+		kbd_keycode(tp->kbd, *input++);
+	/* Emit keycode for AID byte. */
+	kbd_keycode(tp->kbd, 256 + tp->input[0]);
 
 	raw3270_request_reset(rrq);
-	xchg(&cp->read, rrq);
-	raw3270_put_view(&cp->view);
+	xchg(&tp->read, rrq);
+	raw3270_put_view(&tp->view);
 }
 
 /*
  * Read request completion callback.
  */
-static void
-con3270_read_callback(struct raw3270_request *rq, void *data)
+static void tty3270_read_callback(struct raw3270_request *rq, void *data)
 {
+	struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
+
 	raw3270_get_view(rq->view);
 	/* Schedule tasklet to pass input to tty. */
-	tasklet_schedule(&((struct con3270 *) rq->view)->readlet);
+	tasklet_schedule(&tp->readlet);
 }
 
 /*
- * Issue a read request. Called only from interrupt function.
+ * Issue a read request. Call with device lock.
  */
-static void
-con3270_issue_read(struct con3270 *cp)
+static void tty3270_issue_read(struct tty3270 *tp, int lock)
 {
 	struct raw3270_request *rrq;
 	int rc;
 
-	rrq = xchg(&cp->read, 0);
+	rrq = xchg(&tp->read, 0);
 	if (!rrq)
 		/* Read already scheduled. */
 		return;
-	rrq->callback = con3270_read_callback;
-	rrq->callback_data = cp;
+	rrq->callback = tty3270_read_callback;
+	rrq->callback_data = tp;
 	raw3270_request_set_cmd(rrq, TC_READMOD);
-	raw3270_request_set_data(rrq, cp->input->string, cp->input->len);
+	raw3270_request_set_data(rrq, tp->input, tty3270_input_size(tp->view.cols));
 	/* Issue the read modified request. */
-	rc = raw3270_start_irq(&cp->view, rrq);
-	if (rc)
+	if (lock)
+		rc = raw3270_start(&tp->view, rrq);
+	else
+		rc = raw3270_start_irq(&tp->view, rrq);
+	if (rc) {
 		raw3270_request_reset(rrq);
+		xchg(&tp->read, rrq);
+	}
 }
 
 /*
- * Switch to the console view.
+ * Hang up the tty
  */
-static int
-con3270_activate(struct raw3270_view *view)
+static void tty3270_hangup_tasklet(unsigned long data)
 {
-	struct con3270 *cp;
+	struct tty3270 *tp = (struct tty3270 *)data;
+
+	tty_port_tty_hangup(&tp->port, true);
+	raw3270_put_view(&tp->view);
+}
 
-	cp = (struct con3270 *) view;
-	cp->update_flags = CON_UPDATE_ALL;
-	con3270_set_timer(cp, 1);
+/*
+ * Switch to the tty view.
+ */
+static int tty3270_activate(struct raw3270_view *view)
+{
+	struct tty3270 *tp = container_of(view, struct tty3270, view);
+
+	tp->update_flags = TTY_UPDATE_ALL;
+	tty3270_set_timer(tp, 1);
 	return 0;
 }
 
-static void
-con3270_deactivate(struct raw3270_view *view)
+static void tty3270_deactivate(struct raw3270_view *view)
 {
-	struct con3270 *cp;
+	struct tty3270 *tp = container_of(view, struct tty3270, view);
 
-	cp = (struct con3270 *) view;
-	del_timer(&cp->timer);
+	del_timer(&tp->timer);
 }
 
-static void
-con3270_irq(struct con3270 *cp, struct raw3270_request *rq, struct irb *irb)
+static void tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb)
 {
 	/* Handle ATTN. Schedule tasklet to read aid. */
-	if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION)
-		con3270_issue_read(cp);
+	if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
+		if (!tp->throttle)
+			tty3270_issue_read(tp, 0);
+		else
+			tp->attn = 1;
+	}
 
 	if (rq) {
-		if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
+		if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
 			rq->rc = -EIO;
-		else
+			raw3270_get_view(&tp->view);
+			tasklet_schedule(&tp->hanglet);
+		} else {
 			/* Normal end. Copy residual count. */
 			rq->rescnt = irb->scsw.cmd.count;
+		}
 	} else if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
 		/* Interrupt without an outstanding request -> update all */
-		cp->update_flags = CON_UPDATE_ALL;
-		con3270_set_timer(cp, 1);
+		tp->update_flags = TTY_UPDATE_ALL;
+		tty3270_set_timer(tp, 1);
+	}
+}
+
+/*
+ * Allocate tty3270 structure.
+ */
+static struct tty3270 *tty3270_alloc_view(void)
+{
+	struct tty3270 *tp;
+
+	tp = kzalloc(sizeof(*tp), GFP_KERNEL);
+	if (!tp)
+		goto out_err;
+
+	tp->write = raw3270_request_alloc(TTY3270_OUTPUT_BUFFER_SIZE);
+	if (IS_ERR(tp->write))
+		goto out_tp;
+	tp->read = raw3270_request_alloc(0);
+	if (IS_ERR(tp->read))
+		goto out_write;
+	tp->kreset = raw3270_request_alloc(1);
+	if (IS_ERR(tp->kreset))
+		goto out_read;
+	tp->readpartreq = raw3270_request_alloc(sizeof(sfq_read_partition));
+	if (IS_ERR(tp->readpartreq))
+		goto out_reset;
+	tp->kbd = kbd_alloc();
+	if (!tp->kbd)
+		goto out_readpartreq;
+
+	tty_port_init(&tp->port);
+	timer_setup(&tp->timer, tty3270_update, 0);
+	tasklet_init(&tp->readlet, tty3270_read_tasklet,
+		     (unsigned long)tp->read);
+	tasklet_init(&tp->hanglet, tty3270_hangup_tasklet,
+		     (unsigned long)tp);
+	return tp;
+
+out_readpartreq:
+	raw3270_request_free(tp->readpartreq);
+out_reset:
+	raw3270_request_free(tp->kreset);
+out_read:
+	raw3270_request_free(tp->read);
+out_write:
+	raw3270_request_free(tp->write);
+out_tp:
+	kfree(tp);
+out_err:
+	return ERR_PTR(-ENOMEM);
+}
+
+/*
+ * Free tty3270 structure.
+ */
+static void tty3270_free_view(struct tty3270 *tp)
+{
+	kbd_free(tp->kbd);
+	raw3270_request_free(tp->kreset);
+	raw3270_request_free(tp->read);
+	raw3270_request_free(tp->write);
+	free_page((unsigned long)tp->converted_line);
+	tty_port_destroy(&tp->port);
+	kfree(tp);
+}
+
+/*
+ * Allocate tty3270 screen.
+ */
+static struct tty3270_line *tty3270_alloc_screen(struct tty3270 *tp, unsigned int rows,
+						 unsigned int cols, int *allocated_out)
+{
+	struct tty3270_line *screen;
+	int allocated, lines;
+
+	allocated = __roundup_pow_of_two(rows) * TTY3270_SCREEN_PAGES;
+	screen = kcalloc(allocated, sizeof(struct tty3270_line), GFP_KERNEL);
+	if (!screen)
+		goto out_err;
+	for (lines = 0; lines < allocated; lines++) {
+		screen[lines].cells = kcalloc(cols, sizeof(struct tty3270_cell), GFP_KERNEL);
+		if (!screen[lines].cells)
+			goto out_screen;
+	}
+	*allocated_out = allocated;
+	return screen;
+out_screen:
+	while (lines--)
+		kfree(screen[lines].cells);
+	kfree(screen);
+out_err:
+	return ERR_PTR(-ENOMEM);
+}
+
+static char **tty3270_alloc_recall(int cols)
+{
+	char **lines;
+	int i;
+
+	lines = kmalloc_array(TTY3270_RECALL_SIZE, sizeof(char *), GFP_KERNEL);
+	if (!lines)
+		return NULL;
+	for (i = 0; i < TTY3270_RECALL_SIZE; i++) {
+		lines[i] = kcalloc(1, tty3270_input_size(cols) + 1, GFP_KERNEL);
+		if (!lines[i])
+			break;
 	}
+
+	if (i == TTY3270_RECALL_SIZE)
+		return lines;
+
+	while (i--)
+		kfree(lines[i]);
+	kfree(lines);
+	return NULL;
 }
 
-/* Console view to a 3270 device. */
-static struct raw3270_fn con3270_fn = {
-	.activate = con3270_activate,
-	.deactivate = con3270_deactivate,
-	.intv = (void *) con3270_irq
+static void tty3270_free_recall(char **lines)
+{
+	int i;
+
+	for (i = 0; i < TTY3270_RECALL_SIZE; i++)
+		kfree(lines[i]);
+	kfree(lines);
+}
+
+/*
+ * Free tty3270 screen.
+ */
+static void tty3270_free_screen(struct tty3270_line *screen, int old_lines)
+{
+	int lines;
+
+	for (lines = 0; lines < old_lines; lines++)
+		kfree(screen[lines].cells);
+	kfree(screen);
+}
+
+/*
+ * Resize tty3270 screen
+ */
+static void tty3270_resize(struct raw3270_view *view,
+			   int new_model, int new_rows, int new_cols,
+			   int old_model, int old_rows, int old_cols)
+{
+	struct tty3270 *tp = container_of(view, struct tty3270, view);
+	struct tty3270_line *screen, *oscreen;
+	char **old_rcl_lines, **new_rcl_lines;
+	char *old_prompt, *new_prompt;
+	char *old_input, *new_input;
+	struct tty_struct *tty;
+	struct winsize ws;
+	int new_allocated, old_allocated = tp->allocated_lines;
+
+	if (old_model == new_model &&
+	    old_cols == new_cols &&
+	    old_rows == new_rows) {
+		spin_lock_irq(&tp->view.lock);
+		tty3270_redraw(tp);
+		spin_unlock_irq(&tp->view.lock);
+		return;
+	}
+
+	new_input = kzalloc(tty3270_input_size(new_cols), GFP_KERNEL | GFP_DMA);
+	if (!new_input)
+		return;
+	new_prompt = kzalloc(tty3270_input_size(new_cols), GFP_KERNEL);
+	if (!new_prompt)
+		goto out_input;
+	screen = tty3270_alloc_screen(tp, new_rows, new_cols, &new_allocated);
+	if (IS_ERR(screen))
+		goto out_prompt;
+	new_rcl_lines = tty3270_alloc_recall(new_cols);
+	if (!new_rcl_lines)
+		goto out_screen;
+
+	/* Switch to new output size */
+	spin_lock_irq(&tp->view.lock);
+	tty3270_blank_screen(tp);
+	oscreen = tp->screen;
+	tp->screen = screen;
+	tp->allocated_lines = new_allocated;
+	tp->view.rows = new_rows;
+	tp->view.cols = new_cols;
+	tp->view.model = new_model;
+	tp->update_flags = TTY_UPDATE_ALL;
+	old_input = tp->input;
+	old_prompt = tp->prompt;
+	old_rcl_lines = tp->rcl_lines;
+	tp->input = new_input;
+	tp->prompt = new_prompt;
+	tp->rcl_lines = new_rcl_lines;
+	tp->rcl_read_index = 0;
+	tp->rcl_write_index = 0;
+	spin_unlock_irq(&tp->view.lock);
+	tty3270_free_screen(oscreen, old_allocated);
+	kfree(old_input);
+	kfree(old_prompt);
+	tty3270_free_recall(old_rcl_lines);
+	tty3270_set_timer(tp, 1);
+	/* Informat tty layer about new size */
+	tty = tty_port_tty_get(&tp->port);
+	if (!tty)
+		return;
+	ws.ws_row = tty3270_tty_rows(tp);
+	ws.ws_col = tp->view.cols;
+	tty_do_resize(tty, &ws);
+	tty_kref_put(tty);
+	return;
+out_screen:
+	tty3270_free_screen(screen, new_rows);
+out_prompt:
+	kfree(new_prompt);
+out_input:
+	kfree(new_input);
+}
+
+/*
+ * Unlink tty3270 data structure from tty.
+ */
+static void tty3270_release(struct raw3270_view *view)
+{
+	struct tty3270 *tp = container_of(view, struct tty3270, view);
+	struct tty_struct *tty = tty_port_tty_get(&tp->port);
+
+	if (tty) {
+		tty->driver_data = NULL;
+		tty_port_tty_set(&tp->port, NULL);
+		tty_hangup(tty);
+		raw3270_put_view(&tp->view);
+		tty_kref_put(tty);
+	}
+}
+
+/*
+ * Free tty3270 data structure
+ */
+static void tty3270_free(struct raw3270_view *view)
+{
+	struct tty3270 *tp = container_of(view, struct tty3270, view);
+
+	del_timer_sync(&tp->timer);
+	tty3270_free_screen(tp->screen, tp->allocated_lines);
+	free_page((unsigned long)tp->converted_line);
+	kfree(tp->input);
+	kfree(tp->prompt);
+	tty3270_free_view(tp);
+}
+
+/*
+ * Delayed freeing of tty3270 views.
+ */
+static void tty3270_del_views(void)
+{
+	int i;
+
+	for (i = RAW3270_FIRSTMINOR; i <= tty3270_max_index; i++) {
+		struct raw3270_view *view = raw3270_find_view(&tty3270_fn, i);
+
+		if (!IS_ERR(view))
+			raw3270_del_view(view);
+	}
+}
+
+static struct raw3270_fn tty3270_fn = {
+	.activate = tty3270_activate,
+	.deactivate = tty3270_deactivate,
+	.intv = (void *)tty3270_irq,
+	.release = tty3270_release,
+	.free = tty3270_free,
+	.resize = tty3270_resize
 };
 
-static inline void
-con3270_cline_add(struct con3270 *cp)
+static int
+tty3270_create_view(int index, struct tty3270 **newtp)
+{
+	struct tty3270 *tp;
+	int rc;
+
+	if (tty3270_max_index < index + 1)
+		tty3270_max_index = index + 1;
+
+	/* Allocate tty3270 structure on first open. */
+	tp = tty3270_alloc_view();
+	if (IS_ERR(tp))
+		return PTR_ERR(tp);
+
+	rc = raw3270_add_view(&tp->view, &tty3270_fn,
+			      index + RAW3270_FIRSTMINOR,
+			      RAW3270_VIEW_LOCK_IRQ);
+	if (rc)
+		goto out_free_view;
+
+	tp->screen = tty3270_alloc_screen(tp, tp->view.rows, tp->view.cols,
+					  &tp->allocated_lines);
+	if (IS_ERR(tp->screen)) {
+		rc = PTR_ERR(tp->screen);
+		goto out_put_view;
+	}
+
+	tp->converted_line = (void *)__get_free_page(GFP_KERNEL);
+	if (!tp->converted_line) {
+		rc = -ENOMEM;
+		goto out_free_screen;
+	}
+
+	tp->input = kzalloc(tty3270_input_size(tp->view.cols), GFP_KERNEL | GFP_DMA);
+	if (!tp->input) {
+		rc = -ENOMEM;
+		goto out_free_converted_line;
+	}
+
+	tp->prompt = kzalloc(tty3270_input_size(tp->view.cols), GFP_KERNEL);
+	if (!tp->prompt) {
+		rc = -ENOMEM;
+		goto out_free_input;
+	}
+
+	tp->rcl_lines = tty3270_alloc_recall(tp->view.cols);
+	if (!tp->rcl_lines) {
+		rc = -ENOMEM;
+		goto out_free_prompt;
+	}
+
+	/* Create blank line for every line in the tty output area. */
+	tty3270_blank_screen(tp);
+
+	tp->kbd->port = &tp->port;
+	tp->kbd->fn_handler[KVAL(K_INCRCONSOLE)] = tty3270_exit_tty;
+	tp->kbd->fn_handler[KVAL(K_SCROLLBACK)] = tty3270_scroll_backward;
+	tp->kbd->fn_handler[KVAL(K_SCROLLFORW)] = tty3270_scroll_forward;
+	tp->kbd->fn_handler[KVAL(K_CONS)] = tty3270_rcl_backward;
+	kbd_ascebc(tp->kbd, tp->view.ascebc);
+
+	raw3270_activate_view(&tp->view);
+	raw3270_put_view(&tp->view);
+	*newtp = tp;
+	return 0;
+
+out_free_prompt:
+	kfree(tp->prompt);
+out_free_input:
+	kfree(tp->input);
+out_free_converted_line:
+	free_page((unsigned long)tp->converted_line);
+out_free_screen:
+	tty3270_free_screen(tp->screen, tp->view.rows);
+out_put_view:
+	raw3270_put_view(&tp->view);
+	raw3270_del_view(&tp->view);
+out_free_view:
+	tty3270_free_view(tp);
+	return rc;
+}
+
+/*
+ * This routine is called whenever a 3270 tty is opened first time.
+ */
+static int
+tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+	struct raw3270_view *view;
+	struct tty3270 *tp;
+	int rc;
+
+	/* Check if the tty3270 is already there. */
+	view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
+	if (IS_ERR(view)) {
+		rc = tty3270_create_view(tty->index, &tp);
+		if (rc)
+			return rc;
+	} else {
+		tp = container_of(view, struct tty3270, view);
+		tty->driver_data = tp;
+		tp->inattr = TF_INPUT;
+	}
+
+	tty->winsize.ws_row = tty3270_tty_rows(tp);
+	tty->winsize.ws_col = tp->view.cols;
+	rc = tty_port_install(&tp->port, driver, tty);
+	if (rc) {
+		raw3270_put_view(&tp->view);
+		return rc;
+	}
+	tty->driver_data = tp;
+	return 0;
+}
+
+/*
+ * This routine is called whenever a 3270 tty is opened.
+ */
+static int tty3270_open(struct tty_struct *tty, struct file *filp)
+{
+	struct tty3270 *tp = tty->driver_data;
+	struct tty_port *port = &tp->port;
+
+	port->count++;
+	tty_port_tty_set(port, tty);
+	return 0;
+}
+
+/*
+ * This routine is called when the 3270 tty is closed. We wait
+ * for the remaining request to be completed. Then we clean up.
+ */
+static void tty3270_close(struct tty_struct *tty, struct file *filp)
 {
-	if (!list_empty(&cp->cline->list))
-		/* Already added. */
+	struct tty3270 *tp = tty->driver_data;
+
+	if (tty->count > 1)
 		return;
-	list_add_tail(&cp->cline->list, &cp->lines);
-	cp->nr_lines++;
-	con3270_rebuild_update(cp);
+	if (tp)
+		tty_port_tty_set(&tp->port, NULL);
+}
+
+static void tty3270_cleanup(struct tty_struct *tty)
+{
+	struct tty3270 *tp = tty->driver_data;
+
+	if (tp) {
+		tty->driver_data = NULL;
+		raw3270_put_view(&tp->view);
+	}
+}
+
+/*
+ * We always have room.
+ */
+static unsigned int tty3270_write_room(struct tty_struct *tty)
+{
+	return INT_MAX;
 }
 
-static inline void
-con3270_cline_insert(struct con3270 *cp, unsigned char c)
+/*
+ * Insert character into the screen at the current position with the
+ * current color and highlight. This function does NOT do cursor movement.
+ */
+static void tty3270_put_character(struct tty3270 *tp, char ch)
 {
-	cp->cline->string[cp->cline->len++] = 
-		cp->view.ascebc[(c < ' ') ? ' ' : c];
-	if (list_empty(&cp->cline->update)) {
-		list_add_tail(&cp->cline->update, &cp->update);
-		cp->update_flags |= CON_UPDATE_LIST;
+	struct tty3270_line *line;
+	struct tty3270_cell *cell;
+
+	line = tty3270_get_write_line(tp, tp->cy);
+	if (line->len <= tp->cx) {
+		while (line->len < tp->cx) {
+			cell = line->cells + line->len;
+			cell->character = ' ';
+			cell->attributes = tp->attributes;
+			line->len++;
+		}
+		line->len++;
 	}
+	cell = line->cells + tp->cx;
+	cell->character = ch;
+	cell->attributes = tp->attributes;
+	line->dirty = 1;
+}
+
+/*
+ * Do carriage return.
+ */
+static void tty3270_cr(struct tty3270 *tp)
+{
+	tp->cx = 0;
 }
 
-static inline void
-con3270_cline_end(struct con3270 *cp)
+/*
+ * Do line feed.
+ */
+static void tty3270_lf(struct tty3270 *tp)
 {
-	struct string *s;
-	unsigned int size;
+	struct tty3270_line *line;
+	int i;
 
-	/* Copy cline. */
-	size = (cp->cline->len < cp->view.cols - 5) ?
-		cp->cline->len + 4 : cp->view.cols;
-	s = con3270_alloc_string(cp, size);
-	memcpy(s->string, cp->cline->string, cp->cline->len);
-	if (cp->cline->len < cp->view.cols - 5) {
-		s->string[s->len - 4] = TO_RA;
-		s->string[s->len - 1] = 0;
+	if (tp->cy < tty3270_tty_rows(tp) - 1) {
+		tp->cy++;
 	} else {
-		while (--size >= cp->cline->len)
-			s->string[size] = cp->view.ascebc[' '];
+		tp->line_view_start = tty3270_line_increment(tp, tp->line_view_start, 1);
+		tp->line_write_start = tty3270_line_increment(tp, tp->line_write_start, 1);
+		for (i = 0; i < tty3270_tty_rows(tp); i++)
+			tty3270_get_view_line(tp, i)->dirty = 1;
+	}
+
+	line = tty3270_get_write_line(tp, tp->cy);
+	line->len = 0;
+	line->dirty = 1;
+}
+
+static void tty3270_ri(struct tty3270 *tp)
+{
+	if (tp->cy > 0)
+		tp->cy--;
+}
+
+static void tty3270_reset_cell(struct tty3270 *tp, struct tty3270_cell *cell)
+{
+	cell->character = ' ';
+	tty3270_reset_attributes(&cell->attributes);
+}
+
+/*
+ * Insert characters at current position.
+ */
+static void tty3270_insert_characters(struct tty3270 *tp, int n)
+{
+	struct tty3270_line *line;
+	int k;
+
+	line = tty3270_get_write_line(tp, tp->cy);
+	while (line->len < tp->cx)
+		tty3270_reset_cell(tp, &line->cells[line->len++]);
+	if (n > tp->view.cols - tp->cx)
+		n = tp->view.cols - tp->cx;
+	k = min_t(int, line->len - tp->cx, tp->view.cols - tp->cx - n);
+	while (k--)
+		line->cells[tp->cx + n + k] = line->cells[tp->cx + k];
+	line->len += n;
+	if (line->len > tp->view.cols)
+		line->len = tp->view.cols;
+	while (n-- > 0) {
+		line->cells[tp->cx + n].character = ' ';
+		line->cells[tp->cx + n].attributes = tp->attributes;
+	}
+}
+
+/*
+ * Delete characters at current position.
+ */
+static void tty3270_delete_characters(struct tty3270 *tp, int n)
+{
+	struct tty3270_line *line;
+	int i;
+
+	line = tty3270_get_write_line(tp, tp->cy);
+	if (line->len <= tp->cx)
+		return;
+	if (line->len - tp->cx <= n) {
+		line->len = tp->cx;
+		return;
+	}
+	for (i = tp->cx; i + n < line->len; i++)
+		line->cells[i] = line->cells[i + n];
+	line->len -= n;
+}
+
+/*
+ * Erase characters at current position.
+ */
+static void tty3270_erase_characters(struct tty3270 *tp, int n)
+{
+	struct tty3270_line *line;
+	struct tty3270_cell *cell;
+
+	line = tty3270_get_write_line(tp, tp->cy);
+	while (line->len > tp->cx && n-- > 0) {
+		cell = line->cells + tp->cx++;
+		tty3270_reset_cell(tp, cell);
+	}
+	tp->cx += n;
+	tp->cx = min_t(int, tp->cx, tp->view.cols - 1);
+}
+
+/*
+ * Erase line, 3 different cases:
+ *  Esc [ 0 K	Erase from current position to end of line inclusive
+ *  Esc [ 1 K	Erase from beginning of line to current position inclusive
+ *  Esc [ 2 K	Erase entire line (without moving cursor)
+ */
+static void tty3270_erase_line(struct tty3270 *tp, int mode)
+{
+	struct tty3270_line *line;
+	struct tty3270_cell *cell;
+	int i, start, end;
+
+	line = tty3270_get_write_line(tp, tp->cy);
+
+	switch (mode) {
+	case 0:
+		start = tp->cx;
+		end = tp->view.cols;
+		break;
+	case 1:
+		start = 0;
+		end = tp->cx;
+		break;
+	case 2:
+		start = 0;
+		end = tp->view.cols;
+		break;
+	default:
+		return;
+	}
+
+	for (i = start; i < end; i++) {
+		cell = line->cells + i;
+		tty3270_reset_cell(tp, cell);
+		cell->attributes.b_color = tp->attributes.b_color;
+	}
+
+	if (line->len <= end)
+		line->len = end;
+}
+
+/*
+ * Erase display, 3 different cases:
+ *  Esc [ 0 J	Erase from current position to bottom of screen inclusive
+ *  Esc [ 1 J	Erase from top of screen to current position inclusive
+ *  Esc [ 2 J	Erase entire screen (without moving the cursor)
+ */
+static void tty3270_erase_display(struct tty3270 *tp, int mode)
+{
+	struct tty3270_line *line;
+	int i, start, end;
+
+	switch (mode) {
+	case 0:
+		tty3270_erase_line(tp, 0);
+		start = tp->cy + 1;
+		end = tty3270_tty_rows(tp);
+		break;
+	case 1:
+		start = 0;
+		end = tp->cy;
+		tty3270_erase_line(tp, 1);
+		break;
+	case 2:
+		start = 0;
+		end = tty3270_tty_rows(tp);
+		break;
+	default:
+		return;
+	}
+	for (i = start; i < end; i++) {
+		line = tty3270_get_write_line(tp, i);
+		line->len = 0;
+		line->dirty = 1;
+	}
+}
+
+/*
+ * Set attributes found in an escape sequence.
+ *  Esc [ <attr> ; <attr> ; ... m
+ */
+static void tty3270_set_attributes(struct tty3270 *tp)
+{
+	int i, attr;
+
+	for (i = 0; i <= tp->esc_npar; i++) {
+		attr = tp->esc_par[i];
+		switch (attr) {
+		case 0:		/* Reset */
+			tty3270_reset_attributes(&tp->attributes);
+			break;
+		/* Highlight. */
+		case 4:		/* Start underlining. */
+			tp->attributes.highlight = TTY3270_HIGHLIGHT_UNDERSCORE;
+			break;
+		case 5:		/* Start blink. */
+			tp->attributes.highlight = TTY3270_HIGHLIGHT_BLINK;
+			break;
+		case 7:		/* Start reverse. */
+			tp->attributes.highlight = TTY3270_HIGHLIGHT_REVERSE;
+			break;
+		case 24:	/* End underlining */
+			tp->attributes.highlight &= ~TTY3270_HIGHLIGHT_UNDERSCORE;
+			break;
+		case 25:	/* End blink. */
+			tp->attributes.highlight &= ~TTY3270_HIGHLIGHT_BLINK;
+			break;
+		case 27:	/* End reverse. */
+			tp->attributes.highlight &= ~TTY3270_HIGHLIGHT_REVERSE;
+			break;
+		/* Foreground color. */
+		case 30:	/* Black */
+		case 31:	/* Red */
+		case 32:	/* Green */
+		case 33:	/* Yellow */
+		case 34:	/* Blue */
+		case 35:	/* Magenta */
+		case 36:	/* Cyan */
+		case 37:	/* White */
+		case 39:	/* Black */
+			tp->attributes.f_color = attr - 30;
+			break;
+		/* Background color. */
+		case 40:	/* Black */
+		case 41:	/* Red */
+		case 42:	/* Green */
+		case 43:	/* Yellow */
+		case 44:	/* Blue */
+		case 45:	/* Magenta */
+		case 46:	/* Cyan */
+		case 47:	/* White */
+		case 49:	/* Black */
+			tp->attributes.b_color = attr - 40;
+			break;
+		}
+	}
+}
+
+static inline int tty3270_getpar(struct tty3270 *tp, int ix)
+{
+	return (tp->esc_par[ix] > 0) ? tp->esc_par[ix] : 1;
+}
+
+static void tty3270_goto_xy(struct tty3270 *tp, int cx, int cy)
+{
+	struct tty3270_line *line;
+	struct tty3270_cell *cell;
+	int max_cx = max(0, cx);
+	int max_cy = max(0, cy);
+
+	tp->cx = min_t(int, tp->view.cols - 1, max_cx);
+	line = tty3270_get_write_line(tp, tp->cy);
+	while (line->len < tp->cx) {
+		cell = line->cells + line->len;
+		cell->character = ' ';
+		cell->attributes = tp->attributes;
+		line->len++;
+	}
+	tp->cy = min_t(int, tty3270_tty_rows(tp) - 1, max_cy);
+}
+
+/*
+ * Process escape sequences. Known sequences:
+ *  Esc 7			Save Cursor Position
+ *  Esc 8			Restore Cursor Position
+ *  Esc [ Pn ; Pn ; .. m	Set attributes
+ *  Esc [ Pn ; Pn H		Cursor Position
+ *  Esc [ Pn ; Pn f		Cursor Position
+ *  Esc [ Pn A			Cursor Up
+ *  Esc [ Pn B			Cursor Down
+ *  Esc [ Pn C			Cursor Forward
+ *  Esc [ Pn D			Cursor Backward
+ *  Esc [ Pn G			Cursor Horizontal Absolute
+ *  Esc [ Pn X			Erase Characters
+ *  Esc [ Ps J			Erase in Display
+ *  Esc [ Ps K			Erase in Line
+ * // FIXME: add all the new ones.
+ *
+ *  Pn is a numeric parameter, a string of zero or more decimal digits.
+ *  Ps is a selective parameter.
+ */
+static void tty3270_escape_sequence(struct tty3270 *tp, char ch)
+{
+	enum { ES_NORMAL, ES_ESC, ES_SQUARE, ES_PAREN, ES_GETPARS };
+
+	if (tp->esc_state == ES_NORMAL) {
+		if (ch == 0x1b)
+			/* Starting new escape sequence. */
+			tp->esc_state = ES_ESC;
+		return;
+	}
+	if (tp->esc_state == ES_ESC) {
+		tp->esc_state = ES_NORMAL;
+		switch (ch) {
+		case '[':
+			tp->esc_state = ES_SQUARE;
+			break;
+		case '(':
+			tp->esc_state = ES_PAREN;
+			break;
+		case 'E':
+			tty3270_cr(tp);
+			tty3270_lf(tp);
+			break;
+		case 'M':
+			tty3270_ri(tp);
+			break;
+		case 'D':
+			tty3270_lf(tp);
+			break;
+		case 'Z':		/* Respond ID. */
+			kbd_puts_queue(&tp->port, "\033[?6c");
+			break;
+		case '7':		/* Save cursor position. */
+			tp->saved_cx = tp->cx;
+			tp->saved_cy = tp->cy;
+			tp->saved_attributes = tp->attributes;
+			break;
+		case '8':		/* Restore cursor position. */
+			tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
+			tp->attributes = tp->saved_attributes;
+			break;
+		case 'c':		/* Reset terminal. */
+			tp->cx = 0;
+			tp->cy = 0;
+			tp->saved_cx = 0;
+			tp->saved_cy = 0;
+			tty3270_reset_attributes(&tp->attributes);
+			tty3270_reset_attributes(&tp->saved_attributes);
+			tty3270_erase_display(tp, 2);
+			break;
+		}
+		return;
+	}
+
+	switch (tp->esc_state) {
+	case ES_PAREN:
+		tp->esc_state = ES_NORMAL;
+		switch (ch) {
+		case 'B':
+			tp->attributes.alternate_charset = 0;
+			break;
+		case '0':
+			tp->attributes.alternate_charset = 1;
+			break;
+		}
+		return;
+	case ES_SQUARE:
+		tp->esc_state = ES_GETPARS;
+		memset(tp->esc_par, 0, sizeof(tp->esc_par));
+		tp->esc_npar = 0;
+		tp->esc_ques = (ch == '?');
+		if (tp->esc_ques)
+			return;
+		fallthrough;
+	case ES_GETPARS:
+		if (ch == ';' && tp->esc_npar < ESCAPE_NPAR - 1) {
+			tp->esc_npar++;
+			return;
+		}
+		if (ch >= '0' && ch <= '9') {
+			tp->esc_par[tp->esc_npar] *= 10;
+			tp->esc_par[tp->esc_npar] += ch - '0';
+			return;
+		}
+		break;
+	default:
+		break;
+	}
+	tp->esc_state = ES_NORMAL;
+	if (ch == 'n' && !tp->esc_ques) {
+		if (tp->esc_par[0] == 5)		/* Status report. */
+			kbd_puts_queue(&tp->port, "\033[0n");
+		else if (tp->esc_par[0] == 6) {	/* Cursor report. */
+			char buf[40];
+
+			sprintf(buf, "\033[%d;%dR", tp->cy + 1, tp->cx + 1);
+			kbd_puts_queue(&tp->port, buf);
+		}
+		return;
+	}
+	if (tp->esc_ques)
+		return;
+	switch (ch) {
+	case 'm':
+		tty3270_set_attributes(tp);
+		break;
+	case 'H':	/* Set cursor position. */
+	case 'f':
+		tty3270_goto_xy(tp, tty3270_getpar(tp, 1) - 1,
+				tty3270_getpar(tp, 0) - 1);
+		break;
+	case 'd':	/* Set y position. */
+		tty3270_goto_xy(tp, tp->cx, tty3270_getpar(tp, 0) - 1);
+		break;
+	case 'A':	/* Cursor up. */
+	case 'F':
+		tty3270_goto_xy(tp, tp->cx, tp->cy - tty3270_getpar(tp, 0));
+		break;
+	case 'B':	/* Cursor down. */
+	case 'e':
+	case 'E':
+		tty3270_goto_xy(tp, tp->cx, tp->cy + tty3270_getpar(tp, 0));
+		break;
+	case 'C':	/* Cursor forward. */
+	case 'a':
+		tty3270_goto_xy(tp, tp->cx + tty3270_getpar(tp, 0), tp->cy);
+		break;
+	case 'D':	/* Cursor backward. */
+		tty3270_goto_xy(tp, tp->cx - tty3270_getpar(tp, 0), tp->cy);
+		break;
+	case 'G':	/* Set x position. */
+	case '`':
+		tty3270_goto_xy(tp, tty3270_getpar(tp, 0), tp->cy);
+		break;
+	case 'X':	/* Erase Characters. */
+		tty3270_erase_characters(tp, tty3270_getpar(tp, 0));
+		break;
+	case 'J':	/* Erase display. */
+		tty3270_erase_display(tp, tp->esc_par[0]);
+		break;
+	case 'K':	/* Erase line. */
+		tty3270_erase_line(tp, tp->esc_par[0]);
+		break;
+	case 'P':	/* Delete characters. */
+		tty3270_delete_characters(tp, tty3270_getpar(tp, 0));
+		break;
+	case '@':	/* Insert characters. */
+		tty3270_insert_characters(tp, tty3270_getpar(tp, 0));
+		break;
+	case 's':	/* Save cursor position. */
+		tp->saved_cx = tp->cx;
+		tp->saved_cy = tp->cy;
+		tp->saved_attributes = tp->attributes;
+		break;
+	case 'u':	/* Restore cursor position. */
+		tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
+		tp->attributes = tp->saved_attributes;
+		break;
+	}
+}
+
+/*
+ * String write routine for 3270 ttys
+ */
+static void tty3270_do_write(struct tty3270 *tp, struct tty_struct *tty,
+			     const unsigned char *buf, int count)
+{
+	int i_msg, i;
+
+	spin_lock_irq(&tp->view.lock);
+	for (i_msg = 0; !tty->flow.stopped && i_msg < count; i_msg++) {
+		if (tp->esc_state != 0) {
+			/* Continue escape sequence. */
+			tty3270_escape_sequence(tp, buf[i_msg]);
+			continue;
+		}
+
+		switch (buf[i_msg]) {
+		case 0x00:
+			break;
+		case 0x07:		/* '\a' -- Alarm */
+			tp->wcc |= TW_PLUSALARM;
+			break;
+		case 0x08:		/* Backspace. */
+			if (tp->cx > 0) {
+				tp->cx--;
+				tty3270_put_character(tp, ' ');
+			}
+			break;
+		case 0x09:		/* '\t' -- Tabulate */
+			for (i = tp->cx % 8; i < 8; i++) {
+				if (tp->cx >= tp->view.cols) {
+					tty3270_cr(tp);
+					tty3270_lf(tp);
+					break;
+				}
+				tty3270_put_character(tp, ' ');
+				tp->cx++;
+			}
+			break;
+		case 0x0a:		/* '\n' -- New Line */
+			tty3270_cr(tp);
+			tty3270_lf(tp);
+			break;
+		case 0x0c:		/* '\f' -- Form Feed */
+			tty3270_erase_display(tp, 2);
+			tp->cx = 0;
+			tp->cy = 0;
+			break;
+		case 0x0d:		/* '\r' -- Carriage Return */
+			tp->cx = 0;
+			break;
+		case 0x0e:
+			tp->attributes.alternate_charset = 1;
+			break;
+		case 0x0f:		/* SuSE "exit alternate mode" */
+			tp->attributes.alternate_charset = 0;
+			break;
+		case 0x1b:		/* Start escape sequence. */
+			tty3270_escape_sequence(tp, buf[i_msg]);
+			break;
+		default:		/* Insert normal character. */
+			if (tp->cx >= tp->view.cols) {
+				tty3270_cr(tp);
+				tty3270_lf(tp);
+			}
+			tty3270_put_character(tp, buf[i_msg]);
+			tp->cx++;
+			break;
+		}
+	}
+	/* Setup timer to update display after 1/10 second */
+	tp->update_flags |= TTY_UPDATE_LINES;
+	if (!timer_pending(&tp->timer))
+		tty3270_set_timer(tp, msecs_to_jiffies(100));
+
+	spin_unlock_irq(&tp->view.lock);
+}
+
+/*
+ * String write routine for 3270 ttys
+ */
+static int tty3270_write(struct tty_struct *tty,
+			 const unsigned char *buf, int count)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return 0;
+	if (tp->char_count > 0) {
+		tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
+		tp->char_count = 0;
+	}
+	tty3270_do_write(tp, tty, buf, count);
+	return count;
+}
+
+/*
+ * Put single characters to the ttys character buffer
+ */
+static int tty3270_put_char(struct tty_struct *tty, unsigned char ch)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp || tp->char_count >= TTY3270_CHAR_BUF_SIZE)
+		return 0;
+	tp->char_buf[tp->char_count++] = ch;
+	return 1;
+}
+
+/*
+ * Flush all characters from the ttys characeter buffer put there
+ * by tty3270_put_char.
+ */
+static void tty3270_flush_chars(struct tty_struct *tty)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return;
+	if (tp->char_count > 0) {
+		tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
+		tp->char_count = 0;
 	}
-	/* Replace cline with allocated line s and reset cline. */
-	list_add(&s->list, &cp->cline->list);
-	list_del_init(&cp->cline->list);
-	if (!list_empty(&cp->cline->update)) {
-		list_add(&s->update, &cp->cline->update);
-		list_del_init(&cp->cline->update);
+}
+
+/*
+ * Check for visible/invisible input switches
+ */
+static void tty3270_set_termios(struct tty_struct *tty, const struct ktermios *old)
+{
+	struct tty3270 *tp;
+	int new;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return;
+	spin_lock_irq(&tp->view.lock);
+	if (L_ICANON(tty)) {
+		new = L_ECHO(tty) ? TF_INPUT : TF_INPUTN;
+		if (new != tp->inattr) {
+			tp->inattr = new;
+			tty3270_update_prompt(tp, "");
+			tty3270_set_timer(tp, 1);
+		}
 	}
-	cp->cline->len = 0;
+	spin_unlock_irq(&tp->view.lock);
 }
 
 /*
- * Write a string to the 3270 console
+ * Disable reading from a 3270 tty
  */
+static void tty3270_throttle(struct tty_struct *tty)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return;
+	tp->throttle = 1;
+}
+
+/*
+ * Enable reading from a 3270 tty
+ */
+static void tty3270_unthrottle(struct tty_struct *tty)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return;
+	tp->throttle = 0;
+	if (tp->attn)
+		tty3270_issue_read(tp, 1);
+}
+
+/*
+ * Hang up the tty device.
+ */
+static void tty3270_hangup(struct tty_struct *tty)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return;
+	spin_lock_irq(&tp->view.lock);
+	tp->cx = 0;
+	tp->cy = 0;
+	tp->saved_cx = 0;
+	tp->saved_cy = 0;
+	tty3270_reset_attributes(&tp->attributes);
+	tty3270_reset_attributes(&tp->saved_attributes);
+	tty3270_blank_screen(tp);
+	tp->update_flags = TTY_UPDATE_ALL;
+	spin_unlock_irq(&tp->view.lock);
+	tty3270_set_timer(tp, 1);
+}
+
+static void tty3270_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+}
+
+static int tty3270_ioctl(struct tty_struct *tty, unsigned int cmd,
+			 unsigned long arg)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return -ENODEV;
+	if (tty_io_error(tty))
+		return -EIO;
+	return kbd_ioctl(tp->kbd, cmd, arg);
+}
+
+#ifdef CONFIG_COMPAT
+static long tty3270_compat_ioctl(struct tty_struct *tty,
+				 unsigned int cmd, unsigned long arg)
+{
+	struct tty3270 *tp;
+
+	tp = tty->driver_data;
+	if (!tp)
+		return -ENODEV;
+	if (tty_io_error(tty))
+		return -EIO;
+	return kbd_ioctl(tp->kbd, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
+
+static const struct tty_operations tty3270_ops = {
+	.install = tty3270_install,
+	.cleanup = tty3270_cleanup,
+	.open = tty3270_open,
+	.close = tty3270_close,
+	.write = tty3270_write,
+	.put_char = tty3270_put_char,
+	.flush_chars = tty3270_flush_chars,
+	.write_room = tty3270_write_room,
+	.throttle = tty3270_throttle,
+	.unthrottle = tty3270_unthrottle,
+	.hangup = tty3270_hangup,
+	.wait_until_sent = tty3270_wait_until_sent,
+	.ioctl = tty3270_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = tty3270_compat_ioctl,
+#endif
+	.set_termios = tty3270_set_termios
+};
+
+static void tty3270_create_cb(int minor)
+{
+	tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
+}
+
+static void tty3270_destroy_cb(int minor)
+{
+	tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
+}
+
+static struct raw3270_notifier tty3270_notifier = {
+	.create = tty3270_create_cb,
+	.destroy = tty3270_destroy_cb,
+};
+
+/*
+ * 3270 tty registration code called from tty_init().
+ * Most kernel services (incl. kmalloc) are available at this poimt.
+ */
+static int __init tty3270_init(void)
+{
+	struct tty_driver *driver;
+	int ret;
+
+	driver = tty_alloc_driver(RAW3270_MAXDEVS,
+				  TTY_DRIVER_REAL_RAW |
+				  TTY_DRIVER_DYNAMIC_DEV |
+				  TTY_DRIVER_RESET_TERMIOS);
+	if (IS_ERR(driver))
+		return PTR_ERR(driver);
+
+	/*
+	 * Initialize the tty_driver structure
+	 * Entries in tty3270_driver that are NOT initialized:
+	 * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc
+	 */
+	driver->driver_name = "tty3270";
+	driver->name = "3270/tty";
+	driver->major = IBM_TTY3270_MAJOR;
+	driver->minor_start = RAW3270_FIRSTMINOR;
+	driver->name_base = RAW3270_FIRSTMINOR;
+	driver->type = TTY_DRIVER_TYPE_SYSTEM;
+	driver->subtype = SYSTEM_TYPE_TTY;
+	driver->init_termios = tty_std_termios;
+	tty_set_operations(driver, &tty3270_ops);
+	ret = tty_register_driver(driver);
+	if (ret) {
+		tty_driver_kref_put(driver);
+		return ret;
+	}
+	tty3270_driver = driver;
+	raw3270_register_notifier(&tty3270_notifier);
+	return 0;
+}
+
+static void __exit tty3270_exit(void)
+{
+	struct tty_driver *driver;
+
+	raw3270_unregister_notifier(&tty3270_notifier);
+	driver = tty3270_driver;
+	tty3270_driver = NULL;
+	tty_unregister_driver(driver);
+	tty_driver_kref_put(driver);
+	tty3270_del_views();
+}
+
+#if IS_ENABLED(CONFIG_TN3270_CONSOLE)
+
+static struct tty3270 *condev;
+
 static void
 con3270_write(struct console *co, const char *str, unsigned int count)
 {
-	struct con3270 *cp;
+	struct tty3270 *tp = co->data;
 	unsigned long flags;
-	unsigned char c;
+	char c;
 
-	cp = condev;
-	spin_lock_irqsave(&cp->view.lock, flags);
-	while (count-- > 0) {
+	spin_lock_irqsave(&tp->view.lock, flags);
+	while (count--) {
 		c = *str++;
-		if (cp->cline->len == 0)
-			con3270_cline_add(cp);
-		if (c != '\n')
-			con3270_cline_insert(cp, c);
-		if (c == '\n' || cp->cline->len >= cp->view.cols)
-			con3270_cline_end(cp);
+		if (c == 0x0a) {
+			tty3270_cr(tp);
+			tty3270_lf(tp);
+		} else {
+			if (tp->cx >= tp->view.cols) {
+				tty3270_cr(tp);
+				tty3270_lf(tp);
+			}
+			tty3270_put_character(tp, c);
+			tp->cx++;
+		}
 	}
-	/* Setup timer to output current console buffer after 1/10 second */
-	cp->nr_up = 0;
-	if (cp->view.dev && !timer_pending(&cp->timer))
-		con3270_set_timer(cp, HZ/10);
-	spin_unlock_irqrestore(&cp->view.lock,flags);
+	spin_unlock_irqrestore(&tp->view.lock, flags);
 }
 
 static struct tty_driver *
@@ -522,14 +2079,11 @@ con3270_device(struct console *c, int *index)
 	return tty3270_driver;
 }
 
-/*
- * Wait for end of write request.
- */
 static void
-con3270_wait_write(struct con3270 *cp)
+con3270_wait_write(struct tty3270 *tp)
 {
-	while (!cp->write) {
-		raw3270_wait_cons_dev(cp->view.dev);
+	while (!tp->write) {
+		raw3270_wait_cons_dev(tp->view.dev);
 		barrier();
 	}
 }
@@ -545,28 +2099,30 @@ con3270_wait_write(struct con3270 *cp)
 static int con3270_notify(struct notifier_block *self,
 			  unsigned long event, void *data)
 {
-	struct con3270 *cp;
+	struct tty3270 *tp;
 	unsigned long flags;
+	int rc;
 
-	cp = condev;
-	if (!cp->view.dev)
+	tp = condev;
+	if (!tp->view.dev)
 		return NOTIFY_DONE;
-	if (!raw3270_view_lock_unavailable(&cp->view))
-		raw3270_activate_view(&cp->view);
-	if (!spin_trylock_irqsave(&cp->view.lock, flags))
+	if (!raw3270_view_lock_unavailable(&tp->view)) {
+		rc = raw3270_activate_view(&tp->view);
+		if (rc)
+			return NOTIFY_DONE;
+	}
+	if (!spin_trylock_irqsave(&tp->view.lock, flags))
 		return NOTIFY_DONE;
-	con3270_wait_write(cp);
-	cp->nr_up = 0;
-	con3270_rebuild_update(cp);
-	con3270_update_status(cp);
-	while (cp->update_flags != 0) {
-		spin_unlock_irqrestore(&cp->view.lock, flags);
-		con3270_update(&cp->timer);
-		spin_lock_irqsave(&cp->view.lock, flags);
-		con3270_wait_write(cp);
-	}
-	spin_unlock_irqrestore(&cp->view.lock, flags);
-
+	con3270_wait_write(tp);
+	tp->nr_up = 0;
+	tp->update_flags = TTY_UPDATE_ALL;
+	while (tp->update_flags != 0) {
+		spin_unlock_irqrestore(&tp->view.lock, flags);
+		tty3270_update(&tp->timer);
+		spin_lock_irqsave(&tp->view.lock, flags);
+		con3270_wait_write(tp);
+	}
+	spin_unlock_irqrestore(&tp->view.lock, flags);
 	return NOTIFY_DONE;
 }
 
@@ -580,9 +2136,6 @@ static struct notifier_block on_reboot_nb = {
 	.priority = INT_MIN + 1, /* run the callback late */
 };
 
-/*
- *  The console structure for the 3270 console
- */
 static struct console con3270 = {
 	.name	 = "tty3270",
 	.write	 = con3270_write,
@@ -590,15 +2143,13 @@ static struct console con3270 = {
 	.flags	 = CON_PRINTBUFFER,
 };
 
-/*
- * 3270 console initialization code called from console_init().
- */
 static int __init
 con3270_init(void)
 {
+	struct raw3270_view *view;
 	struct raw3270 *rp;
-	void *cbuf;
-	int i;
+	struct tty3270 *tp;
+	int rc;
 
 	/* Check if 3270 is to be the console */
 	if (!CONSOLE_IS_3270)
@@ -614,38 +2165,28 @@ con3270_init(void)
 	if (IS_ERR(rp))
 		return PTR_ERR(rp);
 
-	condev = kzalloc(sizeof(struct con3270), GFP_KERNEL | GFP_DMA);
-	if (!condev)
-		return -ENOMEM;
-	condev->view.dev = rp;
-
-	condev->read = raw3270_request_alloc(0);
-	condev->read->callback = con3270_read_callback;
-	condev->read->callback_data = condev;
-	condev->write = raw3270_request_alloc(CON3270_OUTPUT_BUFFER_SIZE);
-	condev->kreset = raw3270_request_alloc(1);
-
-	INIT_LIST_HEAD(&condev->lines);
-	INIT_LIST_HEAD(&condev->update);
-	timer_setup(&condev->timer, con3270_update, 0);
-	tasklet_init(&condev->readlet, con3270_read_tasklet,
-		     (unsigned long) condev->read);
-
-	raw3270_add_view(&condev->view, &con3270_fn, 1, RAW3270_VIEW_LOCK_IRQ);
-
-	INIT_LIST_HEAD(&condev->freemem);
-	for (i = 0; i < CON3270_STRING_PAGES; i++) {
-		cbuf = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
-		add_string_memory(&condev->freemem, cbuf, PAGE_SIZE);
-	}
-	condev->cline = alloc_string(&condev->freemem, condev->view.cols);
-	condev->cline->len = 0;
-	con3270_create_status(condev);
-	condev->input = alloc_string(&condev->freemem, 80);
+	/* Check if the tty3270 is already there. */
+	view = raw3270_find_view(&tty3270_fn, RAW3270_FIRSTMINOR);
+	if (IS_ERR(view)) {
+		rc = tty3270_create_view(0, &tp);
+		if (rc)
+			return rc;
+	} else {
+		tp = container_of(view, struct tty3270, view);
+		tp->inattr = TF_INPUT;
+	}
+	con3270.data = tp;
+	condev = tp;
 	atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
 	register_reboot_notifier(&on_reboot_nb);
 	register_console(&con3270);
 	return 0;
 }
-
 console_initcall(con3270_init);
+#endif
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CHARDEV_MAJOR(IBM_TTY3270_MAJOR);
+
+module_init(tty3270_init);
+module_exit(tty3270_exit);
diff --git a/drivers/s390/char/diag_ftp.c b/drivers/s390/char/diag_ftp.c
index 36bbd6b6e210..65c7f2d565d8 100644
--- a/drivers/s390/char/diag_ftp.c
+++ b/drivers/s390/char/diag_ftp.c
@@ -159,8 +159,8 @@ ssize_t diag_ftp_cmd(const struct hmcdrv_ftp_cmdspec *ftp, size_t *fsize)
 		goto out;
 	}
 
-	len = strlcpy(ldfpl->fident, ftp->fname, sizeof(ldfpl->fident));
-	if (len >= HMCDRV_FTP_FIDENT_MAX) {
+	len = strscpy(ldfpl->fident, ftp->fname, sizeof(ldfpl->fident));
+	if (len < 0) {
 		len = -EINVAL;
 		goto out_free;
 	}
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 4c4683d8784a..4f26b0a55620 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -19,6 +19,7 @@
 #include <linux/slab.h>
 #include <linux/types.h>
 
+#include <uapi/asm/fs3270.h>
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
 #include <asm/ebcdic.h>
@@ -44,14 +45,12 @@ struct fs3270 {
 
 static DEFINE_MUTEX(fs3270_mutex);
 
-static void
-fs3270_wake_up(struct raw3270_request *rq, void *data)
+static void fs3270_wake_up(struct raw3270_request *rq, void *data)
 {
-	wake_up((wait_queue_head_t *) data);
+	wake_up((wait_queue_head_t *)data);
 }
 
-static inline int
-fs3270_working(struct fs3270 *fp)
+static inline int fs3270_working(struct fs3270 *fp)
 {
 	/*
 	 * The fullscreen view is in working order if the view
@@ -60,13 +59,12 @@ fs3270_working(struct fs3270 *fp)
 	return fp->active && raw3270_request_final(fp->init);
 }
 
-static int
-fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq)
+static int fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq)
 {
 	struct fs3270 *fp;
 	int rc;
 
-	fp = (struct fs3270 *) view;
+	fp = (struct fs3270 *)view;
 	rq->callback = fs3270_wake_up;
 	rq->callback_data = &fp->wait;
 
@@ -90,22 +88,20 @@ fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq)
 /*
  * Switch to the fullscreen view.
  */
-static void
-fs3270_reset_callback(struct raw3270_request *rq, void *data)
+static void fs3270_reset_callback(struct raw3270_request *rq, void *data)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) rq->view;
+	fp = (struct fs3270 *)rq->view;
 	raw3270_request_reset(rq);
 	wake_up(&fp->wait);
 }
 
-static void
-fs3270_restore_callback(struct raw3270_request *rq, void *data)
+static void fs3270_restore_callback(struct raw3270_request *rq, void *data)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) rq->view;
+	fp = (struct fs3270 *)rq->view;
 	if (rq->rc != 0 || rq->rescnt != 0) {
 		if (fp->fs_pid)
 			kill_pid(fp->fs_pid, SIGHUP, 1);
@@ -115,29 +111,31 @@ fs3270_restore_callback(struct raw3270_request *rq, void *data)
 	wake_up(&fp->wait);
 }
 
-static int
-fs3270_activate(struct raw3270_view *view)
+static int fs3270_activate(struct raw3270_view *view)
 {
 	struct fs3270 *fp;
 	char *cp;
 	int rc;
 
-	fp = (struct fs3270 *) view;
+	fp = (struct fs3270 *)view;
 
 	/* If an old init command is still running just return. */
 	if (!raw3270_request_final(fp->init))
 		return 0;
 
+	raw3270_request_set_cmd(fp->init, TC_EWRITEA);
+	raw3270_request_set_idal(fp->init, fp->rdbuf);
+	fp->init->rescnt = 0;
+	cp = fp->rdbuf->data[0];
 	if (fp->rdbuf_size == 0) {
 		/* No saved buffer. Just clear the screen. */
-		raw3270_request_set_cmd(fp->init, TC_EWRITEA);
+		fp->init->ccw.count = 1;
 		fp->init->callback = fs3270_reset_callback;
+		cp[0] = 0;
 	} else {
 		/* Restore fullscreen buffer saved by fs3270_deactivate. */
-		raw3270_request_set_cmd(fp->init, TC_EWRITEA);
-		raw3270_request_set_idal(fp->init, fp->rdbuf);
 		fp->init->ccw.count = fp->rdbuf_size;
-		cp = fp->rdbuf->data[0];
+		fp->init->callback = fs3270_restore_callback;
 		cp[0] = TW_KR;
 		cp[1] = TO_SBA;
 		cp[2] = cp[6];
@@ -146,10 +144,9 @@ fs3270_activate(struct raw3270_view *view)
 		cp[5] = TO_SBA;
 		cp[6] = 0x40;
 		cp[7] = 0x40;
-		fp->init->rescnt = 0;
-		fp->init->callback = fs3270_restore_callback;
 	}
-	rc = fp->init->rc = raw3270_start_locked(view, fp->init);
+	rc = raw3270_start_locked(view, fp->init);
+	fp->init->rc = rc;
 	if (rc)
 		fp->init->callback(fp->init, NULL);
 	else
@@ -160,12 +157,11 @@ fs3270_activate(struct raw3270_view *view)
 /*
  * Shutdown fullscreen view.
  */
-static void
-fs3270_save_callback(struct raw3270_request *rq, void *data)
+static void fs3270_save_callback(struct raw3270_request *rq, void *data)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) rq->view;
+	fp = (struct fs3270 *)rq->view;
 
 	/* Correct idal buffer element 0 address. */
 	fp->rdbuf->data[0] -= 5;
@@ -181,18 +177,18 @@ fs3270_save_callback(struct raw3270_request *rq, void *data)
 		if (fp->fs_pid)
 			kill_pid(fp->fs_pid, SIGHUP, 1);
 		fp->rdbuf_size = 0;
-	} else
+	} else {
 		fp->rdbuf_size = fp->rdbuf->size - rq->rescnt;
+	}
 	raw3270_request_reset(rq);
 	wake_up(&fp->wait);
 }
 
-static void
-fs3270_deactivate(struct raw3270_view *view)
+static void fs3270_deactivate(struct raw3270_view *view)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) view;
+	fp = (struct fs3270 *)view;
 	fp->active = 0;
 
 	/* If an old init command is still running just return. */
@@ -218,8 +214,8 @@ fs3270_deactivate(struct raw3270_view *view)
 		fp->init->callback(fp->init, NULL);
 }
 
-static void
-fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
+static void fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq,
+		       struct irb *irb)
 {
 	/* Handle ATTN. Set indication and wake waiters for attention. */
 	if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
@@ -239,14 +235,14 @@ fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
 /*
  * Process reads from fullscreen 3270.
  */
-static ssize_t
-fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
+static ssize_t fs3270_read(struct file *filp, char __user *data,
+			   size_t count, loff_t *off)
 {
 	struct fs3270 *fp;
 	struct raw3270_request *rq;
 	struct idal_buffer *ib;
 	ssize_t rc;
-	
+
 	if (count == 0 || count > 65535)
 		return -EINVAL;
 	fp = filp->private_data;
@@ -271,12 +267,12 @@ fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
 					rc = -EFAULT;
 				else
 					rc = count;
-
 			}
 		}
 		raw3270_request_free(rq);
-	} else
+	} else {
 		rc = PTR_ERR(rq);
+	}
 	idal_buffer_free(ib);
 	return rc;
 }
@@ -284,8 +280,8 @@ fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
 /*
  * Process writes to fullscreen 3270.
  */
-static ssize_t
-fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *off)
+static ssize_t fs3270_write(struct file *filp, const char __user *data,
+			    size_t count, loff_t *off)
 {
 	struct fs3270 *fp;
 	struct raw3270_request *rq;
@@ -310,11 +306,13 @@ fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *o
 			rc = fs3270_do_io(&fp->view, rq);
 			if (rc == 0)
 				rc = count - rq->rescnt;
-		} else
+		} else {
 			rc = -EFAULT;
+		}
 		raw3270_request_free(rq);
-	} else
+	} else {
 		rc = PTR_ERR(rq);
+	}
 	idal_buffer_free(ib);
 	return rc;
 }
@@ -322,8 +320,7 @@ fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *o
 /*
  * process ioctl commands for the tube driver
  */
-static long
-fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+static long fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	char __user *argp;
 	struct fs3270 *fp;
@@ -370,12 +367,11 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 /*
  * Allocate fs3270 structure.
  */
-static struct fs3270 *
-fs3270_alloc_view(void)
+static struct fs3270 *fs3270_alloc_view(void)
 {
 	struct fs3270 *fp;
 
-	fp = kzalloc(sizeof(struct fs3270),GFP_KERNEL);
+	fp = kzalloc(sizeof(*fp), GFP_KERNEL);
 	if (!fp)
 		return ERR_PTR(-ENOMEM);
 	fp->init = raw3270_request_alloc(0);
@@ -389,27 +385,25 @@ fs3270_alloc_view(void)
 /*
  * Free fs3270 structure.
  */
-static void
-fs3270_free_view(struct raw3270_view *view)
+static void fs3270_free_view(struct raw3270_view *view)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) view;
+	fp = (struct fs3270 *)view;
 	if (fp->rdbuf)
 		idal_buffer_free(fp->rdbuf);
-	raw3270_request_free(((struct fs3270 *) view)->init);
+	raw3270_request_free(((struct fs3270 *)view)->init);
 	kfree(view);
 }
 
 /*
  * Unlink fs3270 data structure from filp.
  */
-static void
-fs3270_release(struct raw3270_view *view)
+static void fs3270_release(struct raw3270_view *view)
 {
 	struct fs3270 *fp;
 
-	fp = (struct fs3270 *) view;
+	fp = (struct fs3270 *)view;
 	if (fp->fs_pid)
 		kill_pid(fp->fs_pid, SIGHUP, 1);
 }
@@ -418,7 +412,7 @@ fs3270_release(struct raw3270_view *view)
 static struct raw3270_fn fs3270_fn = {
 	.activate = fs3270_activate,
 	.deactivate = fs3270_deactivate,
-	.intv = (void *) fs3270_irq,
+	.intv = (void *)fs3270_irq,
 	.release = fs3270_release,
 	.free = fs3270_free_view
 };
@@ -426,8 +420,7 @@ static struct raw3270_fn fs3270_fn = {
 /*
  * This routine is called whenever a 3270 fullscreen device is opened.
  */
-static int
-fs3270_open(struct inode *inode, struct file *filp)
+static int fs3270_open(struct inode *inode, struct file *filp)
 {
 	struct fs3270 *fp;
 	struct idal_buffer *ib;
@@ -439,6 +432,7 @@ fs3270_open(struct inode *inode, struct file *filp)
 	/* Check for minor 0 multiplexer. */
 	if (minor == 0) {
 		struct tty_struct *tty = get_current_tty();
+
 		if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) {
 			tty_kref_put(tty);
 			return -ENODEV;
@@ -448,7 +442,7 @@ fs3270_open(struct inode *inode, struct file *filp)
 	}
 	mutex_lock(&fs3270_mutex);
 	/* Check if some other program is already using fullscreen mode. */
-	fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor);
+	fp = (struct fs3270 *)raw3270_find_view(&fs3270_fn, minor);
 	if (!IS_ERR(fp)) {
 		raw3270_put_view(&fp->view);
 		rc = -EBUSY;
@@ -471,7 +465,7 @@ fs3270_open(struct inode *inode, struct file *filp)
 	}
 
 	/* Allocate idal-buffer. */
-	ib = idal_buffer_alloc(2*fp->view.rows*fp->view.cols + 5, 0);
+	ib = idal_buffer_alloc(2 * fp->view.rows * fp->view.cols + 5, 0);
 	if (IS_ERR(ib)) {
 		raw3270_put_view(&fp->view);
 		raw3270_del_view(&fp->view);
@@ -497,8 +491,7 @@ out:
  * This routine is called when the 3270 tty is closed. We wait
  * for the remaining request to be completed. Then we clean up.
  */
-static int
-fs3270_close(struct inode *inode, struct file *filp)
+static int fs3270_close(struct inode *inode, struct file *filp)
 {
 	struct fs3270 *fp;
 
@@ -538,8 +531,7 @@ static void fs3270_destroy_cb(int minor)
 	__unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub");
 }
 
-static struct raw3270_notifier fs3270_notifier =
-{
+static struct raw3270_notifier fs3270_notifier = {
 	.create = fs3270_create_cb,
 	.destroy = fs3270_destroy_cb,
 };
@@ -547,8 +539,7 @@ static struct raw3270_notifier fs3270_notifier =
 /*
  * 3270 fullscreen driver initialization.
  */
-static int __init
-fs3270_init(void)
+static int __init fs3270_init(void)
 {
 	int rc;
 
@@ -561,8 +552,7 @@ fs3270_init(void)
 	return 0;
 }
 
-static void __exit
-fs3270_exit(void)
+static void __exit fs3270_exit(void)
 {
 	raw3270_unregister_notifier(&fs3270_notifier);
 	device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, 0));
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index fb3f62ac8be4..09d7570d3b7d 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -30,6 +30,7 @@
 #include <linux/mutex.h>
 
 struct class *class3270;
+EXPORT_SYMBOL(class3270);
 
 /* The main 3270 data structure. */
 struct raw3270 {
@@ -37,7 +38,8 @@ struct raw3270 {
 	struct ccw_device *cdev;
 	int minor;
 
-	short model, rows, cols;
+	int model, rows, cols;
+	int old_model, old_rows, old_cols;
 	unsigned int state;
 	unsigned long flags;
 
@@ -54,6 +56,7 @@ struct raw3270 {
 	struct raw3270_request init_readpart;
 	struct raw3270_request init_readmod;
 	unsigned char init_data[256];
+	struct work_struct resize_work;
 };
 
 /* raw3270->state */
@@ -89,6 +92,7 @@ module_param(tubxcorrect, bool, 0);
  * Wait queue for device init/delete, view delete.
  */
 DECLARE_WAIT_QUEUE_HEAD(raw3270_wait_queue);
+EXPORT_SYMBOL(raw3270_wait_queue);
 
 static void __raw3270_disconnect(struct raw3270 *rp);
 
@@ -111,9 +115,15 @@ static inline int raw3270_state_ready(struct raw3270 *rp)
 	return rp->state == RAW3270_STATE_READY;
 }
 
-void
-raw3270_buffer_address(struct raw3270 *rp, char *cp, unsigned short addr)
+void raw3270_buffer_address(struct raw3270 *rp, char *cp, int x, int y)
 {
+	int addr;
+
+	if (x < 0)
+		x = max_t(int, 0, rp->view->cols + x);
+	if (y < 0)
+		y = max_t(int, 0, rp->view->rows + y);
+	addr = (y * rp->view->cols) + x;
 	if (test_bit(RAW3270_FLAGS_14BITADDR, &rp->flags)) {
 		cp[0] = (addr >> 8) & 0x3f;
 		cp[1] = addr & 0xff;
@@ -122,17 +132,17 @@ raw3270_buffer_address(struct raw3270 *rp, char *cp, unsigned short addr)
 		cp[1] = raw3270_ebcgraf[addr & 0x3f];
 	}
 }
+EXPORT_SYMBOL(raw3270_buffer_address);
 
 /*
  * Allocate a new 3270 ccw request
  */
-struct raw3270_request *
-raw3270_request_alloc(size_t size)
+struct raw3270_request *raw3270_request_alloc(size_t size)
 {
 	struct raw3270_request *rq;
 
 	/* Allocate request structure */
-	rq = kzalloc(sizeof(struct raw3270_request), GFP_KERNEL | GFP_DMA);
+	rq = kzalloc(sizeof(*rq), GFP_KERNEL | GFP_DMA);
 	if (!rq)
 		return ERR_PTR(-ENOMEM);
 
@@ -155,46 +165,48 @@ raw3270_request_alloc(size_t size)
 
 	return rq;
 }
+EXPORT_SYMBOL(raw3270_request_alloc);
 
 /*
  * Free 3270 ccw request
  */
-void
-raw3270_request_free (struct raw3270_request *rq)
+void raw3270_request_free(struct raw3270_request *rq)
 {
 	kfree(rq->buffer);
 	kfree(rq);
 }
+EXPORT_SYMBOL(raw3270_request_free);
 
 /*
  * Reset request to initial state.
  */
-void
-raw3270_request_reset(struct raw3270_request *rq)
+int raw3270_request_reset(struct raw3270_request *rq)
 {
-	BUG_ON(!list_empty(&rq->list));
+	if (WARN_ON_ONCE(!list_empty(&rq->list)))
+		return -EBUSY;
 	rq->ccw.cmd_code = 0;
 	rq->ccw.count = 0;
 	rq->ccw.cda = __pa(rq->buffer);
 	rq->ccw.flags = CCW_FLAG_SLI;
 	rq->rescnt = 0;
 	rq->rc = 0;
+	return 0;
 }
+EXPORT_SYMBOL(raw3270_request_reset);
 
 /*
  * Set command code to ccw of a request.
  */
-void
-raw3270_request_set_cmd(struct raw3270_request *rq, u8 cmd)
+void raw3270_request_set_cmd(struct raw3270_request *rq, u8 cmd)
 {
 	rq->ccw.cmd_code = cmd;
 }
+EXPORT_SYMBOL(raw3270_request_set_cmd);
 
 /*
  * Add data fragment to output buffer.
  */
-int
-raw3270_request_add_data(struct raw3270_request *rq, void *data, size_t size)
+int raw3270_request_add_data(struct raw3270_request *rq, void *data, size_t size)
 {
 	if (size + rq->ccw.count > rq->size)
 		return -E2BIG;
@@ -202,35 +214,35 @@ raw3270_request_add_data(struct raw3270_request *rq, void *data, size_t size)
 	rq->ccw.count += size;
 	return 0;
 }
+EXPORT_SYMBOL(raw3270_request_add_data);
 
 /*
  * Set address/length pair to ccw of a request.
  */
-void
-raw3270_request_set_data(struct raw3270_request *rq, void *data, size_t size)
+void raw3270_request_set_data(struct raw3270_request *rq, void *data, size_t size)
 {
 	rq->ccw.cda = __pa(data);
 	rq->ccw.count = size;
 }
+EXPORT_SYMBOL(raw3270_request_set_data);
 
 /*
  * Set idal buffer to ccw of a request.
  */
-void
-raw3270_request_set_idal(struct raw3270_request *rq, struct idal_buffer *ib)
+void raw3270_request_set_idal(struct raw3270_request *rq, struct idal_buffer *ib)
 {
 	rq->ccw.cda = __pa(ib->data);
 	rq->ccw.count = ib->size;
 	rq->ccw.flags |= CCW_FLAG_IDA;
 }
+EXPORT_SYMBOL(raw3270_request_set_idal);
 
 /*
  * Add the request to the request queue, try to start it if the
  * 3270 device is idle. Return without waiting for end of i/o.
  */
-static int
-__raw3270_start(struct raw3270 *rp, struct raw3270_view *view,
-		struct raw3270_request *rq)
+static int __raw3270_start(struct raw3270 *rp, struct raw3270_view *view,
+			   struct raw3270_request *rq)
 {
 	rq->view = view;
 	raw3270_get_view(view);
@@ -238,7 +250,7 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view,
 	    !test_bit(RAW3270_FLAGS_BUSY, &rp->flags)) {
 		/* No other requests are on the queue. Start this one. */
 		rq->rc = ccw_device_start(rp->cdev, &rq->ccw,
-					       (unsigned long) rq, 0, 0);
+					  (unsigned long)rq, 0, 0);
 		if (rq->rc) {
 			raw3270_put_view(view);
 			return rq->rc;
@@ -248,16 +260,14 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view,
 	return 0;
 }
 
-int
-raw3270_view_active(struct raw3270_view *view)
+int raw3270_view_active(struct raw3270_view *view)
 {
 	struct raw3270 *rp = view->dev;
 
 	return rp && rp->view == view;
 }
 
-int
-raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
+int raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
 {
 	unsigned long flags;
 	struct raw3270 *rp;
@@ -274,9 +284,25 @@ raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
 	spin_unlock_irqrestore(get_ccwdev_lock(view->dev->cdev), flags);
 	return rc;
 }
+EXPORT_SYMBOL(raw3270_start);
 
-int
-raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq)
+int raw3270_start_request(struct raw3270_view *view, struct raw3270_request *rq,
+			  int cmd, void *data, size_t len)
+{
+	int rc;
+
+	rc = raw3270_request_reset(rq);
+	if (rc)
+		return rc;
+	raw3270_request_set_cmd(rq, cmd);
+	rc = raw3270_request_add_data(rq, data, len);
+	if (rc)
+		return rc;
+	return raw3270_start(view, rq);
+}
+EXPORT_SYMBOL(raw3270_start_request);
+
+int raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq)
 {
 	struct raw3270 *rp;
 	int rc;
@@ -290,9 +316,9 @@ raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq)
 		rc =  __raw3270_start(rp, view, rq);
 	return rc;
 }
+EXPORT_SYMBOL(raw3270_start_locked);
 
-int
-raw3270_start_irq(struct raw3270_view *view, struct raw3270_request *rq)
+int raw3270_start_irq(struct raw3270_view *view, struct raw3270_request *rq)
 {
 	struct raw3270 *rp;
 
@@ -302,12 +328,12 @@ raw3270_start_irq(struct raw3270_view *view, struct raw3270_request *rq)
 	list_add_tail(&rq->list, &rp->req_queue);
 	return 0;
 }
+EXPORT_SYMBOL(raw3270_start_irq);
 
 /*
  * 3270 interrupt routine, called from the ccw_device layer
  */
-static void
-raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
+static void raw3270_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 {
 	struct raw3270 *rp;
 	struct raw3270_view *view;
@@ -316,7 +342,7 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 	rp = dev_get_drvdata(&cdev->dev);
 	if (!rp)
 		return;
-	rq = (struct raw3270_request *) intparm;
+	rq = (struct raw3270_request *)intparm;
 	view = rq ? rq->view : rp->view;
 
 	if (!IS_ERR(irb)) {
@@ -357,9 +383,9 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 	 * started successful.
 	 */
 	while (!list_empty(&rp->req_queue)) {
-		rq = list_entry(rp->req_queue.next,struct raw3270_request,list);
+		rq = list_entry(rp->req_queue.next, struct raw3270_request, list);
 		rq->rc = ccw_device_start(rp->cdev, &rq->ccw,
-					  (unsigned long) rq, 0, 0);
+					  (unsigned long)rq, 0, 0);
 		if (rq->rc == 0)
 			break;
 		/* Start failed. Remove request and do callback. */
@@ -399,7 +425,7 @@ struct raw3270_ua {	/* Query Reply structure for Usable Area */
 		char  ymin;
 		char  xmax;
 		char  ymax;
-	} __attribute__ ((packed)) uab;
+	} __packed uab;
 	struct {	/* Alternate Usable Area Self-Defining Parameter */
 		char  l;	/* Length of this Self-Defining Parm */
 		char  sdpid;	/* 0x02 if Alternate Usable Area */
@@ -412,17 +438,27 @@ struct raw3270_ua {	/* Query Reply structure for Usable Area */
 		int   auayr;
 		char  awauai;
 		char  ahauai;
-	} __attribute__ ((packed)) aua;
-} __attribute__ ((packed));
+	} __packed aua;
+} __packed;
 
-static void
-raw3270_size_device_vm(struct raw3270 *rp)
+static void raw3270_size_device_vm(struct raw3270 *rp)
 {
 	int rc, model;
 	struct ccw_dev_id dev_id;
 	struct diag210 diag_data;
+	struct diag8c diag8c_data;
 
 	ccw_device_get_id(rp->cdev, &dev_id);
+	rc = diag8c(&diag8c_data, &dev_id);
+	if (!rc) {
+		rp->model = 2;
+		rp->rows = diag8c_data.height;
+		rp->cols = diag8c_data.width;
+		if (diag8c_data.flags & 1)
+			set_bit(RAW3270_FLAGS_14BITADDR, &rp->flags);
+		return;
+	}
+
 	diag_data.vrdcdvno = dev_id.devno;
 	diag_data.vrdclen = sizeof(struct diag210);
 	rc = diag210(&diag_data);
@@ -454,16 +490,14 @@ raw3270_size_device_vm(struct raw3270 *rp)
 	}
 }
 
-static void
-raw3270_size_device(struct raw3270 *rp)
+static void raw3270_size_device(struct raw3270 *rp, char *init_data)
 {
 	struct raw3270_ua *uap;
 
 	/* Got a Query Reply */
-	uap = (struct raw3270_ua *) (rp->init_data + 1);
+	uap = (struct raw3270_ua *)(init_data + 1);
 	/* Paranoia check. */
-	if (rp->init_readmod.rc || rp->init_data[0] != 0x88 ||
-	    uap->uab.qcode != 0x81) {
+	if (init_data[0] != 0x88 || uap->uab.qcode != 0x81) {
 		/* Couldn't detect size. Use default model 2. */
 		rp->model = 2;
 		rp->rows = 24;
@@ -494,17 +528,20 @@ raw3270_size_device(struct raw3270 *rp)
 		rp->model = 5;
 }
 
-static void
-raw3270_size_device_done(struct raw3270 *rp)
+static void raw3270_resize_work(struct work_struct *work)
 {
+	struct raw3270 *rp = container_of(work, struct raw3270, resize_work);
 	struct raw3270_view *view;
 
-	rp->view = NULL;
-	rp->state = RAW3270_STATE_READY;
 	/* Notify views about new size */
-	list_for_each_entry(view, &rp->view_list, list)
+	list_for_each_entry(view, &rp->view_list, list) {
 		if (view->fn->resize)
-			view->fn->resize(view, rp->model, rp->rows, rp->cols);
+			view->fn->resize(view, rp->model, rp->rows, rp->cols,
+					 rp->old_model, rp->old_rows, rp->old_cols);
+	}
+	rp->old_cols = rp->cols;
+	rp->old_rows = rp->rows;
+	rp->old_model = rp->model;
 	/* Setup processing done, now activate a view */
 	list_for_each_entry(view, &rp->view_list, list) {
 		rp->view = view;
@@ -514,17 +551,23 @@ raw3270_size_device_done(struct raw3270 *rp)
 	}
 }
 
-static void
-raw3270_read_modified_cb(struct raw3270_request *rq, void *data)
+static void raw3270_size_device_done(struct raw3270 *rp)
+{
+	rp->view = NULL;
+	rp->state = RAW3270_STATE_READY;
+	schedule_work(&rp->resize_work);
+}
+
+void raw3270_read_modified_cb(struct raw3270_request *rq, void *data)
 {
 	struct raw3270 *rp = rq->view->dev;
 
-	raw3270_size_device(rp);
+	raw3270_size_device(rp, data);
 	raw3270_size_device_done(rp);
 }
+EXPORT_SYMBOL(raw3270_read_modified_cb);
 
-static void
-raw3270_read_modified(struct raw3270 *rp)
+static void raw3270_read_modified(struct raw3270 *rp)
 {
 	if (rp->state != RAW3270_STATE_W4ATTN)
 		return;
@@ -534,17 +577,18 @@ raw3270_read_modified(struct raw3270 *rp)
 	rp->init_readmod.ccw.cmd_code = TC_READMOD;
 	rp->init_readmod.ccw.flags = CCW_FLAG_SLI;
 	rp->init_readmod.ccw.count = sizeof(rp->init_data);
-	rp->init_readmod.ccw.cda = (__u32) __pa(rp->init_data);
+	rp->init_readmod.ccw.cda = (__u32)__pa(rp->init_data);
 	rp->init_readmod.callback = raw3270_read_modified_cb;
+	rp->init_readmod.callback_data = rp->init_data;
 	rp->state = RAW3270_STATE_READMOD;
 	raw3270_start_irq(&rp->init_view, &rp->init_readmod);
 }
 
-static void
-raw3270_writesf_readpart(struct raw3270 *rp)
+static void raw3270_writesf_readpart(struct raw3270 *rp)
 {
-	static const unsigned char wbuf[] =
-		{ 0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81 };
+	static const unsigned char wbuf[] = {
+		0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81
+	};
 
 	/* Store 'read partition' data stream to init_data */
 	memset(&rp->init_readpart, 0, sizeof(rp->init_readpart));
@@ -553,7 +597,7 @@ raw3270_writesf_readpart(struct raw3270 *rp)
 	rp->init_readpart.ccw.cmd_code = TC_WRITESF;
 	rp->init_readpart.ccw.flags = CCW_FLAG_SLI;
 	rp->init_readpart.ccw.count = sizeof(wbuf);
-	rp->init_readpart.ccw.cda = (__u32) __pa(&rp->init_data);
+	rp->init_readpart.ccw.cda = (__u32)__pa(&rp->init_data);
 	rp->state = RAW3270_STATE_W4ATTN;
 	raw3270_start_irq(&rp->init_view, &rp->init_readpart);
 }
@@ -561,8 +605,7 @@ raw3270_writesf_readpart(struct raw3270 *rp)
 /*
  * Device reset
  */
-static void
-raw3270_reset_device_cb(struct raw3270_request *rq, void *data)
+static void raw3270_reset_device_cb(struct raw3270_request *rq, void *data)
 {
 	struct raw3270 *rp = rq->view->dev;
 
@@ -574,13 +617,13 @@ raw3270_reset_device_cb(struct raw3270_request *rq, void *data)
 	} else if (MACHINE_IS_VM) {
 		raw3270_size_device_vm(rp);
 		raw3270_size_device_done(rp);
-	} else
+	} else {
 		raw3270_writesf_readpart(rp);
+	}
 	memset(&rp->init_reset, 0, sizeof(rp->init_reset));
 }
 
-static int
-__raw3270_reset_device(struct raw3270 *rp)
+static int __raw3270_reset_device(struct raw3270 *rp)
 {
 	int rc;
 
@@ -592,7 +635,7 @@ __raw3270_reset_device(struct raw3270 *rp)
 	rp->init_reset.ccw.cmd_code = TC_EWRITEA;
 	rp->init_reset.ccw.flags = CCW_FLAG_SLI;
 	rp->init_reset.ccw.count = 1;
-	rp->init_reset.ccw.cda = (__u32) __pa(rp->init_data);
+	rp->init_reset.ccw.cda = (__u32)__pa(rp->init_data);
 	rp->init_reset.callback = raw3270_reset_device_cb;
 	rc = __raw3270_start(rp, &rp->init_view, &rp->init_reset);
 	if (rc == 0 && rp->state == RAW3270_STATE_INIT)
@@ -600,8 +643,7 @@ __raw3270_reset_device(struct raw3270 *rp)
 	return rc;
 }
 
-static int
-raw3270_reset_device(struct raw3270 *rp)
+static int raw3270_reset_device(struct raw3270 *rp)
 {
 	unsigned long flags;
 	int rc;
@@ -612,8 +654,7 @@ raw3270_reset_device(struct raw3270 *rp)
 	return rc;
 }
 
-int
-raw3270_reset(struct raw3270_view *view)
+int raw3270_reset(struct raw3270_view *view)
 {
 	struct raw3270 *rp;
 	int rc;
@@ -627,9 +668,9 @@ raw3270_reset(struct raw3270_view *view)
 		rc = raw3270_reset_device(view->dev);
 	return rc;
 }
+EXPORT_SYMBOL(raw3270_reset);
 
-static void
-__raw3270_disconnect(struct raw3270 *rp)
+static void __raw3270_disconnect(struct raw3270 *rp)
 {
 	struct raw3270_request *rq;
 	struct raw3270_view *view;
@@ -638,7 +679,7 @@ __raw3270_disconnect(struct raw3270 *rp)
 	rp->view = &rp->init_view;
 	/* Cancel all queued requests */
 	while (!list_empty(&rp->req_queue)) {
-		rq = list_entry(rp->req_queue.next,struct raw3270_request,list);
+		rq = list_entry(rp->req_queue.next, struct raw3270_request, list);
 		view = rq->view;
 		rq->rc = -EACCES;
 		list_del_init(&rq->list);
@@ -650,9 +691,8 @@ __raw3270_disconnect(struct raw3270 *rp)
 	__raw3270_reset_device(rp);
 }
 
-static void
-raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
-		 struct irb *irb)
+static void raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq,
+			     struct irb *irb)
 {
 	struct raw3270 *rp;
 
@@ -678,8 +718,8 @@ static struct raw3270_fn raw3270_init_fn = {
 /*
  * Setup new 3270 device.
  */
-static int
-raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc)
+static int raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp,
+				char *ascebc)
 {
 	struct list_head *l;
 	struct raw3270 *tmp;
@@ -699,6 +739,8 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc)
 	/* Set defaults. */
 	rp->rows = 24;
 	rp->cols = 80;
+	rp->old_rows = rp->rows;
+	rp->old_cols = rp->cols;
 
 	INIT_LIST_HEAD(&rp->req_queue);
 	INIT_LIST_HEAD(&rp->view_list);
@@ -706,6 +748,7 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc)
 	rp->init_view.dev = rp;
 	rp->init_view.fn = &raw3270_init_fn;
 	rp->view = &rp->init_view;
+	INIT_WORK(&rp->resize_work, raw3270_resize_work);
 
 	/*
 	 * Add device to list and find the smallest unused minor
@@ -764,7 +807,7 @@ struct raw3270 __init *raw3270_setup_console(void)
 	if (IS_ERR(cdev))
 		return ERR_CAST(cdev);
 
-	rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
+	rp = kzalloc(sizeof(*rp), GFP_KERNEL | GFP_DMA);
 	ascebc = kzalloc(256, GFP_KERNEL);
 	rc = raw3270_setup_device(cdev, rp, ascebc);
 	if (rc)
@@ -789,8 +832,7 @@ struct raw3270 __init *raw3270_setup_console(void)
 	return rp;
 }
 
-void
-raw3270_wait_cons_dev(struct raw3270 *rp)
+void raw3270_wait_cons_dev(struct raw3270 *rp)
 {
 	unsigned long flags;
 
@@ -804,14 +846,13 @@ raw3270_wait_cons_dev(struct raw3270 *rp)
 /*
  * Create a 3270 device structure.
  */
-static struct raw3270 *
-raw3270_create_device(struct ccw_device *cdev)
+static struct raw3270 *raw3270_create_device(struct ccw_device *cdev)
 {
 	struct raw3270 *rp;
 	char *ascebc;
 	int rc;
 
-	rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
+	rp = kzalloc(sizeof(*rp), GFP_KERNEL | GFP_DMA);
 	if (!rp)
 		return ERR_PTR(-ENOMEM);
 	ascebc = kmalloc(256, GFP_KERNEL);
@@ -845,14 +886,57 @@ int raw3270_view_lock_unavailable(struct raw3270_view *view)
 	return 0;
 }
 
+static int raw3270_assign_activate_view(struct raw3270 *rp, struct raw3270_view *view)
+{
+	rp->view = view;
+	return view->fn->activate(view);
+}
+
+static int __raw3270_activate_view(struct raw3270 *rp, struct raw3270_view *view)
+{
+	struct raw3270_view *oldview = NULL, *nv;
+	int rc;
+
+	if (rp->view == view)
+		return 0;
+
+	if (!raw3270_state_ready(rp))
+		return -EBUSY;
+
+	if (rp->view && rp->view->fn->deactivate) {
+		oldview = rp->view;
+		oldview->fn->deactivate(oldview);
+	}
+
+	rc = raw3270_assign_activate_view(rp, view);
+	if (!rc)
+		return 0;
+
+	/* Didn't work. Try to reactivate the old view. */
+	if (oldview) {
+		rc = raw3270_assign_activate_view(rp, oldview);
+		if (!rc)
+			return 0;
+	}
+
+	/* Didn't work as well. Try any other view. */
+	list_for_each_entry(nv, &rp->view_list, list) {
+		if (nv == view || nv == oldview)
+			continue;
+		rc = raw3270_assign_activate_view(rp, nv);
+		if (!rc)
+			break;
+		rp->view = NULL;
+	}
+	return rc;
+}
+
 /*
  * Activate a view.
  */
-int
-raw3270_activate_view(struct raw3270_view *view)
+int raw3270_activate_view(struct raw3270_view *view)
 {
 	struct raw3270 *rp;
-	struct raw3270_view *oldview, *nv;
 	unsigned long flags;
 	int rc;
 
@@ -860,42 +944,16 @@ raw3270_activate_view(struct raw3270_view *view)
 	if (!rp)
 		return -ENODEV;
 	spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
-	if (rp->view == view)
-		rc = 0;
-	else if (!raw3270_state_ready(rp))
-		rc = -EBUSY;
-	else {
-		oldview = NULL;
-		if (rp->view && rp->view->fn->deactivate) {
-			oldview = rp->view;
-			oldview->fn->deactivate(oldview);
-		}
-		rp->view = view;
-		rc = view->fn->activate(view);
-		if (rc) {
-			/* Didn't work. Try to reactivate the old view. */
-			rp->view = oldview;
-			if (!oldview || oldview->fn->activate(oldview) != 0) {
-				/* Didn't work as well. Try any other view. */
-				list_for_each_entry(nv, &rp->view_list, list)
-					if (nv != view && nv != oldview) {
-						rp->view = nv;
-						if (nv->fn->activate(nv) == 0)
-							break;
-						rp->view = NULL;
-					}
-			}
-		}
-	}
+	rc = __raw3270_activate_view(rp, view);
 	spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags);
 	return rc;
 }
+EXPORT_SYMBOL(raw3270_activate_view);
 
 /*
  * Deactivate current view.
  */
-void
-raw3270_deactivate_view(struct raw3270_view *view)
+void raw3270_deactivate_view(struct raw3270_view *view)
 {
 	unsigned long flags;
 	struct raw3270 *rp;
@@ -922,12 +980,13 @@ raw3270_deactivate_view(struct raw3270_view *view)
 	}
 	spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags);
 }
+EXPORT_SYMBOL(raw3270_deactivate_view);
 
 /*
  * Add view to device with minor "minor".
  */
-int
-raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor, int subclass)
+int raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn,
+		     int minor, int subclass)
 {
 	unsigned long flags;
 	struct raw3270 *rp;
@@ -958,12 +1017,12 @@ raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor, in
 	mutex_unlock(&raw3270_mutex);
 	return rc;
 }
+EXPORT_SYMBOL(raw3270_add_view);
 
 /*
  * Find specific view of device with minor "minor".
  */
-struct raw3270_view *
-raw3270_find_view(struct raw3270_fn *fn, int minor)
+struct raw3270_view *raw3270_find_view(struct raw3270_fn *fn, int minor)
 {
 	struct raw3270 *rp;
 	struct raw3270_view *view, *tmp;
@@ -988,12 +1047,12 @@ raw3270_find_view(struct raw3270_fn *fn, int minor)
 	mutex_unlock(&raw3270_mutex);
 	return view;
 }
+EXPORT_SYMBOL(raw3270_find_view);
 
 /*
  * Remove view from device and free view structure via call to view->fn->free.
  */
-void
-raw3270_del_view(struct raw3270_view *view)
+void raw3270_del_view(struct raw3270_view *view)
 {
 	unsigned long flags;
 	struct raw3270 *rp;
@@ -1022,12 +1081,12 @@ raw3270_del_view(struct raw3270_view *view)
 	if (view->fn->free)
 		view->fn->free(view);
 }
+EXPORT_SYMBOL(raw3270_del_view);
 
 /*
  * Remove a 3270 device structure.
  */
-static void
-raw3270_delete_device(struct raw3270 *rp)
+static void raw3270_delete_device(struct raw3270 *rp)
 {
 	struct ccw_device *cdev;
 
@@ -1050,8 +1109,7 @@ raw3270_delete_device(struct raw3270 *rp)
 	kfree(rp);
 }
 
-static int
-raw3270_probe (struct ccw_device *cdev)
+static int raw3270_probe(struct ccw_device *cdev)
 {
 	return 0;
 }
@@ -1059,31 +1117,32 @@ raw3270_probe (struct ccw_device *cdev)
 /*
  * Additional attributes for a 3270 device
  */
-static ssize_t
-raw3270_model_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t model_show(struct device *dev, struct device_attribute *attr,
+			  char *buf)
 {
 	return sysfs_emit(buf, "%i\n",
 			  ((struct raw3270 *)dev_get_drvdata(dev))->model);
 }
-static DEVICE_ATTR(model, 0444, raw3270_model_show, NULL);
+static DEVICE_ATTR_RO(model);
 
-static ssize_t
-raw3270_rows_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t rows_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
 {
 	return sysfs_emit(buf, "%i\n",
 			  ((struct raw3270 *)dev_get_drvdata(dev))->rows);
 }
-static DEVICE_ATTR(rows, 0444, raw3270_rows_show, NULL);
+static DEVICE_ATTR_RO(rows);
 
 static ssize_t
-raw3270_columns_show(struct device *dev, struct device_attribute *attr, char *buf)
+columns_show(struct device *dev, struct device_attribute *attr,
+	     char *buf)
 {
 	return sysfs_emit(buf, "%i\n",
 			  ((struct raw3270 *)dev_get_drvdata(dev))->cols);
 }
-static DEVICE_ATTR(columns, 0444, raw3270_columns_show, NULL);
+static DEVICE_ATTR_RO(columns);
 
-static struct attribute * raw3270_attrs[] = {
+static struct attribute *raw3270_attrs[] = {
 	&dev_attr_model.attr,
 	&dev_attr_rows.attr,
 	&dev_attr_columns.attr,
@@ -1115,6 +1174,7 @@ int raw3270_register_notifier(struct raw3270_notifier *notifier)
 	mutex_unlock(&raw3270_mutex);
 	return 0;
 }
+EXPORT_SYMBOL(raw3270_register_notifier);
 
 void raw3270_unregister_notifier(struct raw3270_notifier *notifier)
 {
@@ -1126,12 +1186,12 @@ void raw3270_unregister_notifier(struct raw3270_notifier *notifier)
 	list_del(&notifier->list);
 	mutex_unlock(&raw3270_mutex);
 }
+EXPORT_SYMBOL(raw3270_unregister_notifier);
 
 /*
  * Set 3270 device online.
  */
-static int
-raw3270_set_online (struct ccw_device *cdev)
+static int raw3270_set_online(struct ccw_device *cdev)
 {
 	struct raw3270_notifier *np;
 	struct raw3270 *rp;
@@ -1158,8 +1218,7 @@ failure:
 /*
  * Remove 3270 device structure.
  */
-static void
-raw3270_remove (struct ccw_device *cdev)
+static void raw3270_remove(struct ccw_device *cdev)
 {
 	unsigned long flags;
 	struct raw3270 *rp;
@@ -1173,7 +1232,7 @@ raw3270_remove (struct ccw_device *cdev)
 	 * devices even if they haven't been varied online.
 	 * Thus, rp may validly be NULL here.
 	 */
-	if (rp == NULL)
+	if (!rp)
 		return;
 
 	sysfs_remove_group(&cdev->dev.kobj, &raw3270_attr_group);
@@ -1209,8 +1268,7 @@ raw3270_remove (struct ccw_device *cdev)
 /*
  * Set 3270 device offline.
  */
-static int
-raw3270_set_offline (struct ccw_device *cdev)
+static int raw3270_set_offline(struct ccw_device *cdev)
 {
 	struct raw3270 *rp;
 
@@ -1249,8 +1307,7 @@ static struct ccw_driver raw3270_ccw_driver = {
 	.int_class	= IRQIO_C70,
 };
 
-static int
-raw3270_init(void)
+static int raw3270_init(void)
 {
 	struct raw3270 *rp;
 	int rc;
@@ -1272,8 +1329,7 @@ raw3270_init(void)
 	return rc;
 }
 
-static void
-raw3270_exit(void)
+static void raw3270_exit(void)
 {
 	ccw_driver_unregister(&raw3270_ccw_driver);
 	class_destroy(class3270);
@@ -1283,25 +1339,3 @@ MODULE_LICENSE("GPL");
 
 module_init(raw3270_init);
 module_exit(raw3270_exit);
-
-EXPORT_SYMBOL(class3270);
-EXPORT_SYMBOL(raw3270_request_alloc);
-EXPORT_SYMBOL(raw3270_request_free);
-EXPORT_SYMBOL(raw3270_request_reset);
-EXPORT_SYMBOL(raw3270_request_set_cmd);
-EXPORT_SYMBOL(raw3270_request_add_data);
-EXPORT_SYMBOL(raw3270_request_set_data);
-EXPORT_SYMBOL(raw3270_request_set_idal);
-EXPORT_SYMBOL(raw3270_buffer_address);
-EXPORT_SYMBOL(raw3270_add_view);
-EXPORT_SYMBOL(raw3270_del_view);
-EXPORT_SYMBOL(raw3270_find_view);
-EXPORT_SYMBOL(raw3270_activate_view);
-EXPORT_SYMBOL(raw3270_deactivate_view);
-EXPORT_SYMBOL(raw3270_start);
-EXPORT_SYMBOL(raw3270_start_locked);
-EXPORT_SYMBOL(raw3270_start_irq);
-EXPORT_SYMBOL(raw3270_reset);
-EXPORT_SYMBOL(raw3270_register_notifier);
-EXPORT_SYMBOL(raw3270_unregister_notifier);
-EXPORT_SYMBOL(raw3270_wait_queue);
diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
index 4cb6b5ee44ca..b1beecc7a0a9 100644
--- a/drivers/s390/char/raw3270.h
+++ b/drivers/s390/char/raw3270.h
@@ -8,88 +8,10 @@
  *     Copyright IBM Corp. 2003, 2009
  */
 
+#include <uapi/asm/raw3270.h>
 #include <asm/idals.h>
 #include <asm/ioctl.h>
 
-/* ioctls for fullscreen 3270 */
-#define TUBICMD		_IO('3', 3)	/* set ccw command for fs reads. */
-#define TUBOCMD		_IO('3', 4)	/* set ccw command for fs writes. */
-#define TUBGETI		_IO('3', 7)	/* get ccw command for fs reads. */
-#define TUBGETO		_IO('3', 8)	/* get ccw command for fs writes. */
-#define TUBSETMOD	_IO('3',12)	/* FIXME: what does it do ?*/
-#define TUBGETMOD	_IO('3',13)	/* FIXME: what does it do ?*/
-
-/* Local Channel Commands */
-#define TC_WRITE	0x01		/* Write */
-#define TC_RDBUF	0x02		/* Read Buffer */
-#define TC_EWRITE	0x05		/* Erase write */
-#define TC_READMOD	0x06		/* Read modified */
-#define TC_EWRITEA	0x0d		/* Erase write alternate */
-#define TC_WRITESF	0x11		/* Write structured field */
-
-/* Buffer Control Orders */
-#define TO_SF		0x1d		/* Start field */
-#define TO_SBA		0x11		/* Set buffer address */
-#define TO_IC		0x13		/* Insert cursor */
-#define TO_PT		0x05		/* Program tab */
-#define TO_RA		0x3c		/* Repeat to address */
-#define TO_SFE		0x29		/* Start field extended */
-#define TO_EUA		0x12		/* Erase unprotected to address */
-#define TO_MF		0x2c		/* Modify field */
-#define TO_SA		0x28		/* Set attribute */
-
-/* Field Attribute Bytes */
-#define TF_INPUT	0x40		/* Visible input */
-#define TF_INPUTN	0x4c		/* Invisible input */
-#define TF_INMDT	0xc1		/* Visible, Set-MDT */
-#define TF_LOG		0x60
-
-/* Character Attribute Bytes */
-#define TAT_RESET	0x00
-#define TAT_FIELD	0xc0
-#define TAT_EXTHI	0x41
-#define TAT_COLOR	0x42
-#define TAT_CHARS	0x43
-#define TAT_TRANS	0x46
-
-/* Extended-Highlighting Bytes */
-#define TAX_RESET	0x00
-#define TAX_BLINK	0xf1
-#define TAX_REVER	0xf2
-#define TAX_UNDER	0xf4
-
-/* Reset value */
-#define TAR_RESET	0x00
-
-/* Color values */
-#define TAC_RESET	0x00
-#define TAC_BLUE	0xf1
-#define TAC_RED		0xf2
-#define TAC_PINK	0xf3
-#define TAC_GREEN	0xf4
-#define TAC_TURQ	0xf5
-#define TAC_YELLOW	0xf6
-#define TAC_WHITE	0xf7
-#define TAC_DEFAULT	0x00
-
-/* Write Control Characters */
-#define TW_NONE		0x40		/* No particular action */
-#define TW_KR		0xc2		/* Keyboard restore */
-#define TW_PLUSALARM	0x04		/* Add this bit for alarm */
-
-#define RAW3270_FIRSTMINOR	1	/* First minor number */
-#define RAW3270_MAXDEVS		255	/* Max number of 3270 devices */
-
-/* For TUBGETMOD and TUBSETMOD. Should include. */
-struct raw3270_iocb {
-	short model;
-	short line_cnt;
-	short col_cnt;
-	short pf_cnt;
-	short re_cnt;
-	short map;
-};
-
 struct raw3270;
 struct raw3270_view;
 extern struct class *class3270;
@@ -105,17 +27,17 @@ struct raw3270_request {
 	int rc;				/* return code for this request. */
 
 	/* Callback for delivering final status. */
-	void (*callback)(struct raw3270_request *, void *);
+	void (*callback)(struct raw3270_request *rq, void *data);
 	void *callback_data;
 };
 
 struct raw3270_request *raw3270_request_alloc(size_t size);
-void raw3270_request_free(struct raw3270_request *);
-void raw3270_request_reset(struct raw3270_request *);
-void raw3270_request_set_cmd(struct raw3270_request *, u8 cmd);
-int  raw3270_request_add_data(struct raw3270_request *, void *, size_t);
-void raw3270_request_set_data(struct raw3270_request *, void *, size_t);
-void raw3270_request_set_idal(struct raw3270_request *, struct idal_buffer *);
+void raw3270_request_free(struct raw3270_request *rq);
+int raw3270_request_reset(struct raw3270_request *rq);
+void raw3270_request_set_cmd(struct raw3270_request *rq, u8 cmd);
+int  raw3270_request_add_data(struct raw3270_request *rq, void *data, size_t size);
+void raw3270_request_set_data(struct raw3270_request *rq, void *data, size_t size);
+void raw3270_request_set_idal(struct raw3270_request *rq, struct idal_buffer *ib);
 
 static inline int
 raw3270_request_final(struct raw3270_request *rq)
@@ -123,19 +45,21 @@ raw3270_request_final(struct raw3270_request *rq)
 	return list_empty(&rq->list);
 }
 
-void raw3270_buffer_address(struct raw3270 *, char *, unsigned short);
+void raw3270_buffer_address(struct raw3270 *, char *, int, int);
 
 /*
  * Functions of a 3270 view.
  */
 struct raw3270_fn {
-	int  (*activate)(struct raw3270_view *);
-	void (*deactivate)(struct raw3270_view *);
-	void (*intv)(struct raw3270_view *,
-		     struct raw3270_request *, struct irb *);
-	void (*release)(struct raw3270_view *);
-	void (*free)(struct raw3270_view *);
-	void (*resize)(struct raw3270_view *, int, int, int);
+	int  (*activate)(struct raw3270_view *rq);
+	void (*deactivate)(struct raw3270_view *rq);
+	void (*intv)(struct raw3270_view *view,
+		     struct raw3270_request *rq, struct irb *ib);
+	void (*release)(struct raw3270_view *view);
+	void (*free)(struct raw3270_view *view);
+	void (*resize)(struct raw3270_view *view,
+		       int new_model, int new_cols, int new_rows,
+		       int old_model, int old_cols, int old_rows);
 };
 
 /*
@@ -148,7 +72,7 @@ struct raw3270_fn {
  */
 struct raw3270_view {
 	struct list_head list;
-	spinlock_t lock;
+	spinlock_t lock; /* protects members of view */
 #define RAW3270_VIEW_LOCK_IRQ	0
 #define RAW3270_VIEW_LOCK_BH	1
 	atomic_t ref_count;
@@ -159,18 +83,21 @@ struct raw3270_view {
 	unsigned char *ascebc;		/* ascii -> ebcdic table */
 };
 
-int raw3270_add_view(struct raw3270_view *, struct raw3270_fn *, int, int);
+int raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor, int subclass);
 int raw3270_view_lock_unavailable(struct raw3270_view *view);
-int raw3270_activate_view(struct raw3270_view *);
-void raw3270_del_view(struct raw3270_view *);
-void raw3270_deactivate_view(struct raw3270_view *);
-struct raw3270_view *raw3270_find_view(struct raw3270_fn *, int);
-int raw3270_start(struct raw3270_view *, struct raw3270_request *);
-int raw3270_start_locked(struct raw3270_view *, struct raw3270_request *);
-int raw3270_start_irq(struct raw3270_view *, struct raw3270_request *);
-int raw3270_reset(struct raw3270_view *);
-struct raw3270_view *raw3270_view(struct raw3270_view *);
-int raw3270_view_active(struct raw3270_view *);
+int raw3270_activate_view(struct raw3270_view *view);
+void raw3270_del_view(struct raw3270_view *view);
+void raw3270_deactivate_view(struct raw3270_view *view);
+struct raw3270_view *raw3270_find_view(struct raw3270_fn *fn, int minor);
+int raw3270_start(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_start_irq(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_reset(struct raw3270_view *view);
+struct raw3270_view *raw3270_view(struct raw3270_view *view);
+int raw3270_view_active(struct raw3270_view *view);
+int raw3270_start_request(struct raw3270_view *view, struct raw3270_request *rq,
+			  int cmd, void *data, size_t len);
+void raw3270_read_modified_cb(struct raw3270_request *rq, void *data);
 
 /* Reference count inliner for view structures. */
 static inline void
@@ -189,7 +116,7 @@ raw3270_put_view(struct raw3270_view *view)
 }
 
 struct raw3270 *raw3270_setup_console(void);
-void raw3270_wait_cons_dev(struct raw3270 *);
+void raw3270_wait_cons_dev(struct raw3270 *rp);
 
 /* Notifier for device addition/removal */
 struct raw3270_notifier {
@@ -198,87 +125,5 @@ struct raw3270_notifier {
 	void (*destroy)(int minor);
 };
 
-int raw3270_register_notifier(struct raw3270_notifier *);
-void raw3270_unregister_notifier(struct raw3270_notifier *);
-
-/*
- * Little memory allocator for string objects. 
- */
-struct string
-{
-	struct list_head list;
-	struct list_head update;
-	unsigned long size;
-	unsigned long len;
-	char string[];
-} __attribute__ ((aligned(8)));
-
-static inline struct string *
-alloc_string(struct list_head *free_list, unsigned long len)
-{
-	struct string *cs, *tmp;
-	unsigned long size;
-
-	size = (len + 7L) & -8L;
-	list_for_each_entry(cs, free_list, list) {
-		if (cs->size < size)
-			continue;
-		if (cs->size > size + sizeof(struct string)) {
-			char *endaddr = (char *) (cs + 1) + cs->size;
-			tmp = (struct string *) (endaddr - size) - 1;
-			tmp->size = size;
-			cs->size -= size + sizeof(struct string);
-			cs = tmp;
-		} else
-			list_del(&cs->list);
-		cs->len = len;
-		INIT_LIST_HEAD(&cs->list);
-		INIT_LIST_HEAD(&cs->update);
-		return cs;
-	}
-	return NULL;
-}
-
-static inline unsigned long
-free_string(struct list_head *free_list, struct string *cs)
-{
-	struct string *tmp;
-	struct list_head *p, *left;
-
-	/* Find out the left neighbour in free memory list. */
-	left = free_list;
-	list_for_each(p, free_list) {
-		if (list_entry(p, struct string, list) > cs)
-			break;
-		left = p;
-	}
-	/* Try to merge with right neighbour = next element from left. */
-	if (left->next != free_list) {
-		tmp = list_entry(left->next, struct string, list);
-		if ((char *) (cs + 1) + cs->size == (char *) tmp) {
-			list_del(&tmp->list);
-			cs->size += tmp->size + sizeof(struct string);
-		}
-	}
-	/* Try to merge with left neighbour. */
-	if (left != free_list) {
-		tmp = list_entry(left, struct string, list);
-		if ((char *) (tmp + 1) + tmp->size == (char *) cs) {
-			tmp->size += cs->size + sizeof(struct string);
-			return tmp->size;
-		}
-	}
-	__list_add(&cs->list, left, left->next);
-	return cs->size;
-}
-
-static inline void
-add_string_memory(struct list_head *free_list, void *mem, unsigned long size)
-{
-	struct string *cs;
-
-	cs = (struct string *) mem;
-	cs->size = size - sizeof(struct string);
-	free_string(free_list, cs);
-}
-
+int raw3270_register_notifier(struct raw3270_notifier *notifier);
+void raw3270_unregister_notifier(struct raw3270_notifier *notifier);
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index c1c70a161c0e..f480d6c7fd39 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -163,7 +163,7 @@ static void __init sclp_early_console_detect(struct init_sccb *sccb)
 		sclp.has_linemode = 1;
 }
 
-void __init sclp_early_adjust_va(void)
+void __init __no_sanitize_address sclp_early_adjust_va(void)
 {
 	sclp_early_sccb = __va((unsigned long)sclp_early_sccb);
 }
diff --git a/drivers/s390/char/sclp_ftp.c b/drivers/s390/char/sclp_ftp.c
index ec5a0e2b9255..d27e2cbfbccb 100644
--- a/drivers/s390/char/sclp_ftp.c
+++ b/drivers/s390/char/sclp_ftp.c
@@ -90,7 +90,7 @@ static int sclp_ftp_et7(const struct hmcdrv_ftp_cmdspec *ftp)
 	struct completion completion;
 	struct sclp_diag_sccb *sccb;
 	struct sclp_req *req;
-	size_t len;
+	ssize_t len;
 	int rc;
 
 	req = kzalloc(sizeof(*req), GFP_KERNEL);
@@ -117,9 +117,9 @@ static int sclp_ftp_et7(const struct hmcdrv_ftp_cmdspec *ftp)
 	sccb->evbuf.mdd.ftp.length = ftp->len;
 	sccb->evbuf.mdd.ftp.bufaddr = virt_to_phys(ftp->buf);
 
-	len = strlcpy(sccb->evbuf.mdd.ftp.fident, ftp->fname,
+	len = strscpy(sccb->evbuf.mdd.ftp.fident, ftp->fname,
 		      HMCDRV_FTP_FIDENT_MAX);
-	if (len >= HMCDRV_FTP_FIDENT_MAX) {
+	if (len < 0) {
 		rc = -EINVAL;
 		goto out_free;
 	}
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
deleted file mode 100644
index 26e3995ac062..000000000000
--- a/drivers/s390/char/tty3270.c
+++ /dev/null
@@ -1,1963 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *    IBM/3270 Driver - tty functions.
- *
- *  Author(s):
- *    Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
- *    Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com>
- *	-- Copyright IBM Corp. 2003
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kdev_t.h>
-#include <linux/tty.h>
-#include <linux/vt_kern.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-
-#include <linux/slab.h>
-#include <linux/memblock.h>
-#include <linux/compat.h>
-
-#include <asm/ccwdev.h>
-#include <asm/cio.h>
-#include <asm/ebcdic.h>
-#include <linux/uaccess.h>
-
-#include "raw3270.h"
-#include "tty3270.h"
-#include "keyboard.h"
-
-#define TTY3270_CHAR_BUF_SIZE 256
-#define TTY3270_OUTPUT_BUFFER_SIZE 1024
-#define TTY3270_STRING_PAGES 5
-
-struct tty_driver *tty3270_driver;
-static int tty3270_max_index;
-
-static struct raw3270_fn tty3270_fn;
-
-struct tty3270_cell {
-	unsigned char character;
-	unsigned char highlight;
-	unsigned char f_color;
-};
-
-struct tty3270_line {
-	struct tty3270_cell *cells;
-	int len;
-};
-
-#define ESCAPE_NPAR 8
-
-/*
- * The main tty view data structure.
- * FIXME:
- * 1) describe line orientation & lines list concept against screen
- * 2) describe conversion of screen to lines
- * 3) describe line format.
- */
-struct tty3270 {
-	struct raw3270_view view;
-	struct tty_port port;
-	void **freemem_pages;		/* Array of pages used for freemem. */
-	struct list_head freemem;	/* List of free memory for strings. */
-
-	/* Output stuff. */
-	struct list_head lines;		/* List of lines. */
-	struct list_head update;	/* List of lines to update. */
-	unsigned char wcc;		/* Write control character. */
-	int nr_lines;			/* # lines in list. */
-	int nr_up;			/* # lines up in history. */
-	unsigned long update_flags;	/* Update indication bits. */
-	struct string *status;		/* Lower right of display. */
-	struct raw3270_request *write;	/* Single write request. */
-	struct timer_list timer;	/* Output delay timer. */
-
-	/* Current tty screen. */
-	unsigned int cx, cy;		/* Current output position. */
-	unsigned int highlight;		/* Blink/reverse/underscore */
-	unsigned int f_color;		/* Foreground color */
-	struct tty3270_line *screen;
-	unsigned int n_model, n_cols, n_rows;	/* New model & size */
-	struct work_struct resize_work;
-
-	/* Input stuff. */
-	struct string *prompt;		/* Output string for input area. */
-	struct string *input;		/* Input string for read request. */
-	struct raw3270_request *read;	/* Single read request. */
-	struct raw3270_request *kreset;	/* Single keyboard reset request. */
-	unsigned char inattr;		/* Visible/invisible input. */
-	int throttle, attn;		/* tty throttle/unthrottle. */
-	struct tasklet_struct readlet;	/* Tasklet to issue read request. */
-	struct tasklet_struct hanglet;	/* Tasklet to hang up the tty. */
-	struct kbd_data *kbd;		/* key_maps stuff. */
-
-	/* Escape sequence parsing. */
-	int esc_state, esc_ques, esc_npar;
-	int esc_par[ESCAPE_NPAR];
-	unsigned int saved_cx, saved_cy;
-	unsigned int saved_highlight, saved_f_color;
-
-	/* Command recalling. */
-	struct list_head rcl_lines;	/* List of recallable lines. */
-	struct list_head *rcl_walk;	/* Point in rcl_lines list. */
-	int rcl_nr, rcl_max;		/* Number/max number of rcl_lines. */
-
-	/* Character array for put_char/flush_chars. */
-	unsigned int char_count;
-	char char_buf[TTY3270_CHAR_BUF_SIZE];
-};
-
-/* tty3270->update_flags. See tty3270_update for details. */
-#define TTY_UPDATE_ERASE	1	/* Use EWRITEA instead of WRITE. */
-#define TTY_UPDATE_LIST		2	/* Update lines in tty3270->update. */
-#define TTY_UPDATE_INPUT	4	/* Update input line. */
-#define TTY_UPDATE_STATUS	8	/* Update status line. */
-#define TTY_UPDATE_ALL		16	/* Recreate screen. */
-
-static void tty3270_update(struct timer_list *);
-static void tty3270_resize_work(struct work_struct *work);
-
-/*
- * Setup timeout for a device. On timeout trigger an update.
- */
-static void tty3270_set_timer(struct tty3270 *tp, int expires)
-{
-	mod_timer(&tp->timer, jiffies + expires);
-}
-
-/*
- * The input line are the two last lines of the screen.
- */
-static void
-tty3270_update_prompt(struct tty3270 *tp, char *input, int count)
-{
-	struct string *line;
-	unsigned int off;
-
-	line = tp->prompt;
-	if (count != 0)
-		line->string[5] = TF_INMDT;
-	else
-		line->string[5] = tp->inattr;
-	if (count > tp->view.cols * 2 - 11)
-		count = tp->view.cols * 2 - 11;
-	memcpy(line->string + 6, input, count);
-	line->string[6 + count] = TO_IC;
-	/* Clear to end of input line. */
-	if (count < tp->view.cols * 2 - 11) {
-		line->string[7 + count] = TO_RA;
-		line->string[10 + count] = 0;
-		off = tp->view.cols * tp->view.rows - 9;
-		raw3270_buffer_address(tp->view.dev, line->string+count+8, off);
-		line->len = 11 + count;
-	} else
-		line->len = 7 + count;
-	tp->update_flags |= TTY_UPDATE_INPUT;
-}
-
-static void
-tty3270_create_prompt(struct tty3270 *tp)
-{
-	static const unsigned char blueprint[] =
-		{ TO_SBA, 0, 0, 0x6e, TO_SF, TF_INPUT,
-		  /* empty input string */
-		  TO_IC, TO_RA, 0, 0, 0 };
-	struct string *line;
-	unsigned int offset;
-
-	line = alloc_string(&tp->freemem,
-			    sizeof(blueprint) + tp->view.cols * 2 - 9);
-	tp->prompt = line;
-	tp->inattr = TF_INPUT;
-	/* Copy blueprint to status line */
-	memcpy(line->string, blueprint, sizeof(blueprint));
-	line->len = sizeof(blueprint);
-	/* Set output offsets. */
-	offset = tp->view.cols * (tp->view.rows - 2);
-	raw3270_buffer_address(tp->view.dev, line->string + 1, offset);
-	offset = tp->view.cols * tp->view.rows - 9;
-	raw3270_buffer_address(tp->view.dev, line->string + 8, offset);
-
-	/* Allocate input string for reading. */
-	tp->input = alloc_string(&tp->freemem, tp->view.cols * 2 - 9 + 6);
-}
-
-/*
- * The status line is the last line of the screen. It shows the string
- * "Running"/"Holding" in the lower right corner of the screen.
- */
-static void
-tty3270_update_status(struct tty3270 * tp)
-{
-	char *str;
-
-	str = (tp->nr_up != 0) ? "History" : "Running";
-	memcpy(tp->status->string + 8, str, 7);
-	codepage_convert(tp->view.ascebc, tp->status->string + 8, 7);
-	tp->update_flags |= TTY_UPDATE_STATUS;
-}
-
-static void
-tty3270_create_status(struct tty3270 * tp)
-{
-	static const unsigned char blueprint[] =
-		{ TO_SBA, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR, TAC_GREEN,
-		  0, 0, 0, 0, 0, 0, 0, TO_SF, TF_LOG, TO_SA, TAT_COLOR,
-		  TAC_RESET };
-	struct string *line;
-	unsigned int offset;
-
-	line = alloc_string(&tp->freemem,sizeof(blueprint));
-	tp->status = line;
-	/* Copy blueprint to status line */
-	memcpy(line->string, blueprint, sizeof(blueprint));
-	/* Set address to start of status string (= last 9 characters). */
-	offset = tp->view.cols * tp->view.rows - 9;
-	raw3270_buffer_address(tp->view.dev, line->string + 1, offset);
-}
-
-/*
- * Set output offsets to 3270 datastream fragment of a tty string.
- * (TO_SBA offset at the start and TO_RA offset at the end of the string)
- */
-static void
-tty3270_update_string(struct tty3270 *tp, struct string *line, int nr)
-{
-	unsigned char *cp;
-
-	raw3270_buffer_address(tp->view.dev, line->string + 1,
-			       tp->view.cols * nr);
-	cp = line->string + line->len - 4;
-	if (*cp == TO_RA)
-		raw3270_buffer_address(tp->view.dev, cp + 1,
-				       tp->view.cols * (nr + 1));
-}
-
-/*
- * Rebuild update list to print all lines.
- */
-static void
-tty3270_rebuild_update(struct tty3270 *tp)
-{
-	struct string *s, *n;
-	int line, nr_up;
-
-	/* 
-	 * Throw away update list and create a new one,
-	 * containing all lines that will fit on the screen.
-	 */
-	list_for_each_entry_safe(s, n, &tp->update, update)
-		list_del_init(&s->update);
-	line = tp->view.rows - 3;
-	nr_up = tp->nr_up;
-	list_for_each_entry_reverse(s, &tp->lines, list) {
-		if (nr_up > 0) {
-			nr_up--;
-			continue;
-		}
-		tty3270_update_string(tp, s, line);
-		list_add(&s->update, &tp->update);
-		if (--line < 0)
-			break;
-	}
-	tp->update_flags |= TTY_UPDATE_LIST;
-}
-
-/*
- * Alloc string for size bytes. If there is not enough room in
- * freemem, free strings until there is room.
- */
-static struct string *
-tty3270_alloc_string(struct tty3270 *tp, size_t size)
-{
-	struct string *s, *n;
-
-	s = alloc_string(&tp->freemem, size);
-	if (s)
-		return s;
-	list_for_each_entry_safe(s, n, &tp->lines, list) {
-		BUG_ON(tp->nr_lines <= tp->view.rows - 2);
-		list_del(&s->list);
-		if (!list_empty(&s->update))
-			list_del(&s->update);
-		tp->nr_lines--;
-		if (free_string(&tp->freemem, s) >= size)
-			break;
-	}
-	s = alloc_string(&tp->freemem, size);
-	BUG_ON(!s);
-	if (tp->nr_up != 0 &&
-	    tp->nr_up + tp->view.rows - 2 >= tp->nr_lines) {
-		tp->nr_up = tp->nr_lines - tp->view.rows + 2;
-		tty3270_rebuild_update(tp);
-		tty3270_update_status(tp);
-	}
-	return s;
-}
-
-/*
- * Add an empty line to the list.
- */
-static void
-tty3270_blank_line(struct tty3270 *tp)
-{
-	static const unsigned char blueprint[] =
-		{ TO_SBA, 0, 0, TO_SA, TAT_EXTHI, TAX_RESET,
-		  TO_SA, TAT_COLOR, TAC_RESET, TO_RA, 0, 0, 0 };
-	struct string *s;
-
-	s = tty3270_alloc_string(tp, sizeof(blueprint));
-	memcpy(s->string, blueprint, sizeof(blueprint));
-	s->len = sizeof(blueprint);
-	list_add_tail(&s->list, &tp->lines);
-	tp->nr_lines++;
-	if (tp->nr_up != 0)
-		tp->nr_up++;
-}
-
-/*
- * Create a blank screen and remove all lines from the history.
- */
-static void
-tty3270_blank_screen(struct tty3270 *tp)
-{
-	struct string *s, *n;
-	int i;
-
-	for (i = 0; i < tp->view.rows - 2; i++)
-		tp->screen[i].len = 0;
-	tp->nr_up = 0;
-	list_for_each_entry_safe(s, n, &tp->lines, list) {
-		list_del(&s->list);
-		if (!list_empty(&s->update))
-			list_del(&s->update);
-		tp->nr_lines--;
-		free_string(&tp->freemem, s);
-	}
-}
-
-/*
- * Write request completion callback.
- */
-static void
-tty3270_write_callback(struct raw3270_request *rq, void *data)
-{
-	struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
-
-	if (rq->rc != 0) {
-		/* Write wasn't successful. Refresh all. */
-		tp->update_flags = TTY_UPDATE_ALL;
-		tty3270_set_timer(tp, 1);
-	}
-	raw3270_request_reset(rq);
-	xchg(&tp->write, rq);
-}
-
-/*
- * Update 3270 display.
- */
-static void
-tty3270_update(struct timer_list *t)
-{
-	struct tty3270 *tp = from_timer(tp, t, timer);
-	static char invalid_sba[2] = { 0xff, 0xff };
-	struct raw3270_request *wrq;
-	unsigned long updated;
-	struct string *s, *n;
-	char *sba, *str;
-	int rc, len;
-
-	wrq = xchg(&tp->write, 0);
-	if (!wrq) {
-		tty3270_set_timer(tp, 1);
-		return;
-	}
-
-	spin_lock(&tp->view.lock);
-	updated = 0;
-	if (tp->update_flags & TTY_UPDATE_ALL) {
-		tty3270_rebuild_update(tp);
-		tty3270_update_status(tp);
-		tp->update_flags = TTY_UPDATE_ERASE | TTY_UPDATE_LIST |
-			TTY_UPDATE_INPUT | TTY_UPDATE_STATUS;
-	}
-	if (tp->update_flags & TTY_UPDATE_ERASE) {
-		/* Use erase write alternate to erase display. */
-		raw3270_request_set_cmd(wrq, TC_EWRITEA);
-		updated |= TTY_UPDATE_ERASE;
-	} else
-		raw3270_request_set_cmd(wrq, TC_WRITE);
-
-	raw3270_request_add_data(wrq, &tp->wcc, 1);
-	tp->wcc = TW_NONE;
-
-	/*
-	 * Update status line.
-	 */
-	if (tp->update_flags & TTY_UPDATE_STATUS)
-		if (raw3270_request_add_data(wrq, tp->status->string,
-					     tp->status->len) == 0)
-			updated |= TTY_UPDATE_STATUS;
-
-	/*
-	 * Write input line.
-	 */
-	if (tp->update_flags & TTY_UPDATE_INPUT)
-		if (raw3270_request_add_data(wrq, tp->prompt->string,
-					     tp->prompt->len) == 0)
-			updated |= TTY_UPDATE_INPUT;
-
-	sba = invalid_sba;
-	
-	if (tp->update_flags & TTY_UPDATE_LIST) {
-		/* Write strings in the update list to the screen. */
-		list_for_each_entry_safe(s, n, &tp->update, update) {
-			str = s->string;
-			len = s->len;
-			/*
-			 * Skip TO_SBA at the start of the string if the
-			 * last output position matches the start address
-			 * of this line.
-			 */
-			if (s->string[1] == sba[0] && s->string[2] == sba[1]) {
-				str += 3;
-				len -= 3;
-			}
-			if (raw3270_request_add_data(wrq, str, len) != 0)
-				break;
-			list_del_init(&s->update);
-			if (s->string[s->len - 4] == TO_RA)
-				sba = s->string + s->len - 3;
-			else
-				sba = invalid_sba;
-		}
-		if (list_empty(&tp->update))
-			updated |= TTY_UPDATE_LIST;
-	}
-	wrq->callback = tty3270_write_callback;
-	rc = raw3270_start(&tp->view, wrq);
-	if (rc == 0) {
-		tp->update_flags &= ~updated;
-		if (tp->update_flags)
-			tty3270_set_timer(tp, 1);
-	} else {
-		raw3270_request_reset(wrq);
-		xchg(&tp->write, wrq);
-	}
-	spin_unlock(&tp->view.lock);
-}
-
-/*
- * Command recalling.
- */
-static void
-tty3270_rcl_add(struct tty3270 *tp, char *input, int len)
-{
-	struct string *s;
-
-	tp->rcl_walk = NULL;
-	if (len <= 0)
-		return;
-	if (tp->rcl_nr >= tp->rcl_max) {
-		s = list_entry(tp->rcl_lines.next, struct string, list);
-		list_del(&s->list);
-		free_string(&tp->freemem, s);
-		tp->rcl_nr--;
-	}
-	s = tty3270_alloc_string(tp, len);
-	memcpy(s->string, input, len);
-	list_add_tail(&s->list, &tp->rcl_lines);
-	tp->rcl_nr++;
-}
-
-static void
-tty3270_rcl_backward(struct kbd_data *kbd)
-{
-	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
-	struct string *s;
-
-	spin_lock_bh(&tp->view.lock);
-	if (tp->inattr == TF_INPUT) {
-		if (tp->rcl_walk && tp->rcl_walk->prev != &tp->rcl_lines)
-			tp->rcl_walk = tp->rcl_walk->prev;
-		else if (!list_empty(&tp->rcl_lines))
-			tp->rcl_walk = tp->rcl_lines.prev;
-		s = tp->rcl_walk ? 
-			list_entry(tp->rcl_walk, struct string, list) : NULL;
-		if (tp->rcl_walk) {
-			s = list_entry(tp->rcl_walk, struct string, list);
-			tty3270_update_prompt(tp, s->string, s->len);
-		} else
-			tty3270_update_prompt(tp, NULL, 0);
-		tty3270_set_timer(tp, 1);
-	}
-	spin_unlock_bh(&tp->view.lock);
-}
-
-/*
- * Deactivate tty view.
- */
-static void
-tty3270_exit_tty(struct kbd_data *kbd)
-{
-	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
-
-	raw3270_deactivate_view(&tp->view);
-}
-
-/*
- * Scroll forward in history.
- */
-static void
-tty3270_scroll_forward(struct kbd_data *kbd)
-{
-	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
-	int nr_up;
-
-	spin_lock_bh(&tp->view.lock);
-	nr_up = tp->nr_up - tp->view.rows + 2;
-	if (nr_up < 0)
-		nr_up = 0;
-	if (nr_up != tp->nr_up) {
-		tp->nr_up = nr_up;
-		tty3270_rebuild_update(tp);
-		tty3270_update_status(tp);
-		tty3270_set_timer(tp, 1);
-	}
-	spin_unlock_bh(&tp->view.lock);
-}
-
-/*
- * Scroll backward in history.
- */
-static void
-tty3270_scroll_backward(struct kbd_data *kbd)
-{
-	struct tty3270 *tp = container_of(kbd->port, struct tty3270, port);
-	int nr_up;
-
-	spin_lock_bh(&tp->view.lock);
-	nr_up = tp->nr_up + tp->view.rows - 2;
-	if (nr_up + tp->view.rows - 2 > tp->nr_lines)
-		nr_up = tp->nr_lines - tp->view.rows + 2;
-	if (nr_up != tp->nr_up) {
-		tp->nr_up = nr_up;
-		tty3270_rebuild_update(tp);
-		tty3270_update_status(tp);
-		tty3270_set_timer(tp, 1);
-	}
-	spin_unlock_bh(&tp->view.lock);
-}
-
-/*
- * Pass input line to tty.
- */
-static void
-tty3270_read_tasklet(unsigned long data)
-{
-	struct raw3270_request *rrq = (struct raw3270_request *)data;
-	static char kreset_data = TW_KR;
-	struct tty3270 *tp = container_of(rrq->view, struct tty3270, view);
-	char *input;
-	int len;
-
-	spin_lock_bh(&tp->view.lock);
-	/*
-	 * Two AID keys are special: For 0x7d (enter) the input line
-	 * has to be emitted to the tty and for 0x6d the screen
-	 * needs to be redrawn.
-	 */
-	input = NULL;
-	len = 0;
-	if (tp->input->string[0] == 0x7d) {
-		/* Enter: write input to tty. */
-		input = tp->input->string + 6;
-		len = tp->input->len - 6 - rrq->rescnt;
-		if (tp->inattr != TF_INPUTN)
-			tty3270_rcl_add(tp, input, len);
-		if (tp->nr_up > 0) {
-			tp->nr_up = 0;
-			tty3270_rebuild_update(tp);
-			tty3270_update_status(tp);
-		}
-		/* Clear input area. */
-		tty3270_update_prompt(tp, NULL, 0);
-		tty3270_set_timer(tp, 1);
-	} else if (tp->input->string[0] == 0x6d) {
-		/* Display has been cleared. Redraw. */
-		tp->update_flags = TTY_UPDATE_ALL;
-		tty3270_set_timer(tp, 1);
-	}
-	spin_unlock_bh(&tp->view.lock);
-
-	/* Start keyboard reset command. */
-	raw3270_request_reset(tp->kreset);
-	raw3270_request_set_cmd(tp->kreset, TC_WRITE);
-	raw3270_request_add_data(tp->kreset, &kreset_data, 1);
-	raw3270_start(&tp->view, tp->kreset);
-
-	while (len-- > 0)
-		kbd_keycode(tp->kbd, *input++);
-	/* Emit keycode for AID byte. */
-	kbd_keycode(tp->kbd, 256 + tp->input->string[0]);
-
-	raw3270_request_reset(rrq);
-	xchg(&tp->read, rrq);
-	raw3270_put_view(&tp->view);
-}
-
-/*
- * Read request completion callback.
- */
-static void
-tty3270_read_callback(struct raw3270_request *rq, void *data)
-{
-	struct tty3270 *tp = container_of(rq->view, struct tty3270, view);
-	raw3270_get_view(rq->view);
-	/* Schedule tasklet to pass input to tty. */
-	tasklet_schedule(&tp->readlet);
-}
-
-/*
- * Issue a read request. Call with device lock.
- */
-static void
-tty3270_issue_read(struct tty3270 *tp, int lock)
-{
-	struct raw3270_request *rrq;
-	int rc;
-
-	rrq = xchg(&tp->read, 0);
-	if (!rrq)
-		/* Read already scheduled. */
-		return;
-	rrq->callback = tty3270_read_callback;
-	rrq->callback_data = tp;
-	raw3270_request_set_cmd(rrq, TC_READMOD);
-	raw3270_request_set_data(rrq, tp->input->string, tp->input->len);
-	/* Issue the read modified request. */
-	if (lock) {
-		rc = raw3270_start(&tp->view, rrq);
-	} else
-		rc = raw3270_start_irq(&tp->view, rrq);
-	if (rc) {
-		raw3270_request_reset(rrq);
-		xchg(&tp->read, rrq);
-	}
-}
-
-/*
- * Hang up the tty
- */
-static void
-tty3270_hangup_tasklet(unsigned long data)
-{
-	struct tty3270 *tp = (struct tty3270 *)data;
-	tty_port_tty_hangup(&tp->port, true);
-	raw3270_put_view(&tp->view);
-}
-
-/*
- * Switch to the tty view.
- */
-static int
-tty3270_activate(struct raw3270_view *view)
-{
-	struct tty3270 *tp = container_of(view, struct tty3270, view);
-
-	tp->update_flags = TTY_UPDATE_ALL;
-	tty3270_set_timer(tp, 1);
-	return 0;
-}
-
-static void
-tty3270_deactivate(struct raw3270_view *view)
-{
-	struct tty3270 *tp = container_of(view, struct tty3270, view);
-
-	del_timer(&tp->timer);
-}
-
-static void
-tty3270_irq(struct tty3270 *tp, struct raw3270_request *rq, struct irb *irb)
-{
-	/* Handle ATTN. Schedule tasklet to read aid. */
-	if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
-		if (!tp->throttle)
-			tty3270_issue_read(tp, 0);
-		else
-			tp->attn = 1;
-	}
-
-	if (rq) {
-		if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
-			rq->rc = -EIO;
-			raw3270_get_view(&tp->view);
-			tasklet_schedule(&tp->hanglet);
-		} else {
-			/* Normal end. Copy residual count. */
-			rq->rescnt = irb->scsw.cmd.count;
-		}
-	} else if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
-		/* Interrupt without an outstanding request -> update all */
-		tp->update_flags = TTY_UPDATE_ALL;
-		tty3270_set_timer(tp, 1);
-	}
-}
-
-/*
- * Allocate tty3270 structure.
- */
-static struct tty3270 *
-tty3270_alloc_view(void)
-{
-	struct tty3270 *tp;
-	int pages;
-
-	tp = kzalloc(sizeof(struct tty3270), GFP_KERNEL);
-	if (!tp)
-		goto out_err;
-	tp->freemem_pages =
-		kmalloc_array(TTY3270_STRING_PAGES, sizeof(void *),
-			      GFP_KERNEL);
-	if (!tp->freemem_pages)
-		goto out_tp;
-	INIT_LIST_HEAD(&tp->freemem);
-	INIT_LIST_HEAD(&tp->lines);
-	INIT_LIST_HEAD(&tp->update);
-	INIT_LIST_HEAD(&tp->rcl_lines);
-	tp->rcl_max = 20;
-
-	for (pages = 0; pages < TTY3270_STRING_PAGES; pages++) {
-		tp->freemem_pages[pages] = (void *)
-			__get_free_pages(GFP_KERNEL|GFP_DMA, 0);
-		if (!tp->freemem_pages[pages])
-			goto out_pages;
-		add_string_memory(&tp->freemem,
-				  tp->freemem_pages[pages], PAGE_SIZE);
-	}
-	tp->write = raw3270_request_alloc(TTY3270_OUTPUT_BUFFER_SIZE);
-	if (IS_ERR(tp->write))
-		goto out_pages;
-	tp->read = raw3270_request_alloc(0);
-	if (IS_ERR(tp->read))
-		goto out_write;
-	tp->kreset = raw3270_request_alloc(1);
-	if (IS_ERR(tp->kreset))
-		goto out_read;
-	tp->kbd = kbd_alloc();
-	if (!tp->kbd)
-		goto out_reset;
-
-	tty_port_init(&tp->port);
-	timer_setup(&tp->timer, tty3270_update, 0);
-	tasklet_init(&tp->readlet, tty3270_read_tasklet,
-		     (unsigned long) tp->read);
-	tasklet_init(&tp->hanglet, tty3270_hangup_tasklet,
-		     (unsigned long) tp);
-	INIT_WORK(&tp->resize_work, tty3270_resize_work);
-
-	return tp;
-
-out_reset:
-	raw3270_request_free(tp->kreset);
-out_read:
-	raw3270_request_free(tp->read);
-out_write:
-	raw3270_request_free(tp->write);
-out_pages:
-	while (pages--)
-		free_pages((unsigned long) tp->freemem_pages[pages], 0);
-	kfree(tp->freemem_pages);
-	tty_port_destroy(&tp->port);
-out_tp:
-	kfree(tp);
-out_err:
-	return ERR_PTR(-ENOMEM);
-}
-
-/*
- * Free tty3270 structure.
- */
-static void
-tty3270_free_view(struct tty3270 *tp)
-{
-	int pages;
-
-	kbd_free(tp->kbd);
-	raw3270_request_free(tp->kreset);
-	raw3270_request_free(tp->read);
-	raw3270_request_free(tp->write);
-	for (pages = 0; pages < TTY3270_STRING_PAGES; pages++)
-		free_pages((unsigned long) tp->freemem_pages[pages], 0);
-	kfree(tp->freemem_pages);
-	tty_port_destroy(&tp->port);
-	kfree(tp);
-}
-
-/*
- * Allocate tty3270 screen.
- */
-static struct tty3270_line *
-tty3270_alloc_screen(unsigned int rows, unsigned int cols)
-{
-	struct tty3270_line *screen;
-	unsigned long size;
-	int lines;
-
-	size = sizeof(struct tty3270_line) * (rows - 2);
-	screen = kzalloc(size, GFP_KERNEL);
-	if (!screen)
-		goto out_err;
-	for (lines = 0; lines < rows - 2; lines++) {
-		size = sizeof(struct tty3270_cell) * cols;
-		screen[lines].cells = kzalloc(size, GFP_KERNEL);
-		if (!screen[lines].cells)
-			goto out_screen;
-	}
-	return screen;
-out_screen:
-	while (lines--)
-		kfree(screen[lines].cells);
-	kfree(screen);
-out_err:
-	return ERR_PTR(-ENOMEM);
-}
-
-/*
- * Free tty3270 screen.
- */
-static void
-tty3270_free_screen(struct tty3270_line *screen, unsigned int rows)
-{
-	int lines;
-
-	for (lines = 0; lines < rows - 2; lines++)
-		kfree(screen[lines].cells);
-	kfree(screen);
-}
-
-/*
- * Resize tty3270 screen
- */
-static void tty3270_resize_work(struct work_struct *work)
-{
-	struct tty3270 *tp = container_of(work, struct tty3270, resize_work);
-	struct tty3270_line *screen, *oscreen;
-	struct tty_struct *tty;
-	unsigned int orows;
-	struct winsize ws;
-
-	screen = tty3270_alloc_screen(tp->n_rows, tp->n_cols);
-	if (IS_ERR(screen))
-		return;
-	/* Switch to new output size */
-	spin_lock_bh(&tp->view.lock);
-	tty3270_blank_screen(tp);
-	oscreen = tp->screen;
-	orows = tp->view.rows;
-	tp->view.model = tp->n_model;
-	tp->view.rows = tp->n_rows;
-	tp->view.cols = tp->n_cols;
-	tp->screen = screen;
-	free_string(&tp->freemem, tp->prompt);
-	free_string(&tp->freemem, tp->status);
-	tty3270_create_prompt(tp);
-	tty3270_create_status(tp);
-	while (tp->nr_lines < tp->view.rows - 2)
-		tty3270_blank_line(tp);
-	tp->update_flags = TTY_UPDATE_ALL;
-	spin_unlock_bh(&tp->view.lock);
-	tty3270_free_screen(oscreen, orows);
-	tty3270_set_timer(tp, 1);
-	/* Informat tty layer about new size */
-	tty = tty_port_tty_get(&tp->port);
-	if (!tty)
-		return;
-	ws.ws_row = tp->view.rows - 2;
-	ws.ws_col = tp->view.cols;
-	tty_do_resize(tty, &ws);
-	tty_kref_put(tty);
-}
-
-static void
-tty3270_resize(struct raw3270_view *view, int model, int rows, int cols)
-{
-	struct tty3270 *tp = container_of(view, struct tty3270, view);
-
-	if (tp->n_model == model && tp->n_rows == rows && tp->n_cols == cols)
-		return;
-	tp->n_model = model;
-	tp->n_rows = rows;
-	tp->n_cols = cols;
-	schedule_work(&tp->resize_work);
-}
-
-/*
- * Unlink tty3270 data structure from tty.
- */
-static void
-tty3270_release(struct raw3270_view *view)
-{
-	struct tty3270 *tp = container_of(view, struct tty3270, view);
-	struct tty_struct *tty = tty_port_tty_get(&tp->port);
-
-	if (tty) {
-		tty->driver_data = NULL;
-		tty_port_tty_set(&tp->port, NULL);
-		tty_hangup(tty);
-		raw3270_put_view(&tp->view);
-		tty_kref_put(tty);
-	}
-}
-
-/*
- * Free tty3270 data structure
- */
-static void
-tty3270_free(struct raw3270_view *view)
-{
-	struct tty3270 *tp = container_of(view, struct tty3270, view);
-
-	del_timer_sync(&tp->timer);
-	tty3270_free_screen(tp->screen, tp->view.rows);
-	tty3270_free_view(tp);
-}
-
-/*
- * Delayed freeing of tty3270 views.
- */
-static void
-tty3270_del_views(void)
-{
-	int i;
-
-	for (i = RAW3270_FIRSTMINOR; i <= tty3270_max_index; i++) {
-		struct raw3270_view *view = raw3270_find_view(&tty3270_fn, i);
-		if (!IS_ERR(view))
-			raw3270_del_view(view);
-	}
-}
-
-static struct raw3270_fn tty3270_fn = {
-	.activate = tty3270_activate,
-	.deactivate = tty3270_deactivate,
-	.intv = (void *) tty3270_irq,
-	.release = tty3270_release,
-	.free = tty3270_free,
-	.resize = tty3270_resize
-};
-
-/*
- * This routine is called whenever a 3270 tty is opened first time.
- */
-static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
-{
-	struct raw3270_view *view;
-	struct tty3270 *tp;
-	int i, rc;
-
-	/* Check if the tty3270 is already there. */
-	view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
-	if (!IS_ERR(view)) {
-		tp = container_of(view, struct tty3270, view);
-		tty->driver_data = tp;
-		tty->winsize.ws_row = tp->view.rows - 2;
-		tty->winsize.ws_col = tp->view.cols;
-		tp->inattr = TF_INPUT;
-		goto port_install;
-	}
-	if (tty3270_max_index < tty->index + 1)
-		tty3270_max_index = tty->index + 1;
-
-	/* Allocate tty3270 structure on first open. */
-	tp = tty3270_alloc_view();
-	if (IS_ERR(tp))
-		return PTR_ERR(tp);
-
-	rc = raw3270_add_view(&tp->view, &tty3270_fn,
-			      tty->index + RAW3270_FIRSTMINOR,
-			      RAW3270_VIEW_LOCK_BH);
-	if (rc) {
-		tty3270_free_view(tp);
-		return rc;
-	}
-
-	tp->screen = tty3270_alloc_screen(tp->view.rows, tp->view.cols);
-	if (IS_ERR(tp->screen)) {
-		rc = PTR_ERR(tp->screen);
-		raw3270_put_view(&tp->view);
-		raw3270_del_view(&tp->view);
-		tty3270_free_view(tp);
-		return rc;
-	}
-
-	tty->winsize.ws_row = tp->view.rows - 2;
-	tty->winsize.ws_col = tp->view.cols;
-
-	tty3270_create_prompt(tp);
-	tty3270_create_status(tp);
-	tty3270_update_status(tp);
-
-	/* Create blank line for every line in the tty output area. */
-	for (i = 0; i < tp->view.rows - 2; i++)
-		tty3270_blank_line(tp);
-
-	tp->kbd->port = &tp->port;
-	tp->kbd->fn_handler[KVAL(K_INCRCONSOLE)] = tty3270_exit_tty;
-	tp->kbd->fn_handler[KVAL(K_SCROLLBACK)] = tty3270_scroll_backward;
-	tp->kbd->fn_handler[KVAL(K_SCROLLFORW)] = tty3270_scroll_forward;
-	tp->kbd->fn_handler[KVAL(K_CONS)] = tty3270_rcl_backward;
-	kbd_ascebc(tp->kbd, tp->view.ascebc);
-
-	raw3270_activate_view(&tp->view);
-
-port_install:
-	rc = tty_port_install(&tp->port, driver, tty);
-	if (rc) {
-		raw3270_put_view(&tp->view);
-		return rc;
-	}
-
-	tty->driver_data = tp;
-
-	return 0;
-}
-
-/*
- * This routine is called whenever a 3270 tty is opened.
- */
-static int
-tty3270_open(struct tty_struct *tty, struct file *filp)
-{
-	struct tty3270 *tp = tty->driver_data;
-	struct tty_port *port = &tp->port;
-
-	port->count++;
-	tty_port_tty_set(port, tty);
-	return 0;
-}
-
-/*
- * This routine is called when the 3270 tty is closed. We wait
- * for the remaining request to be completed. Then we clean up.
- */
-static void
-tty3270_close(struct tty_struct *tty, struct file * filp)
-{
-	struct tty3270 *tp = tty->driver_data;
-
-	if (tty->count > 1)
-		return;
-	if (tp)
-		tty_port_tty_set(&tp->port, NULL);
-}
-
-static void tty3270_cleanup(struct tty_struct *tty)
-{
-	struct tty3270 *tp = tty->driver_data;
-
-	if (tp) {
-		tty->driver_data = NULL;
-		raw3270_put_view(&tp->view);
-	}
-}
-
-/*
- * We always have room.
- */
-static unsigned int
-tty3270_write_room(struct tty_struct *tty)
-{
-	return INT_MAX;
-}
-
-/*
- * Insert character into the screen at the current position with the
- * current color and highlight. This function does NOT do cursor movement.
- */
-static void tty3270_put_character(struct tty3270 *tp, char ch)
-{
-	struct tty3270_line *line;
-	struct tty3270_cell *cell;
-
-	line = tp->screen + tp->cy;
-	if (line->len <= tp->cx) {
-		while (line->len < tp->cx) {
-			cell = line->cells + line->len;
-			cell->character = tp->view.ascebc[' '];
-			cell->highlight = tp->highlight;
-			cell->f_color = tp->f_color;
-			line->len++;
-		}
-		line->len++;
-	}
-	cell = line->cells + tp->cx;
-	cell->character = tp->view.ascebc[(unsigned int) ch];
-	cell->highlight = tp->highlight;
-	cell->f_color = tp->f_color;
-}
-
-/*
- * Convert a tty3270_line to a 3270 data fragment usable for output.
- */
-static void
-tty3270_convert_line(struct tty3270 *tp, int line_nr)
-{
-	struct tty3270_line *line;
-	struct tty3270_cell *cell;
-	struct string *s, *n;
-	unsigned char highlight;
-	unsigned char f_color;
-	char *cp;
-	int flen, i;
-
-	/* Determine how long the fragment will be. */
-	flen = 3;		/* Prefix (TO_SBA). */
-	line = tp->screen + line_nr;
-	flen += line->len;
-	highlight = TAX_RESET;
-	f_color = TAC_RESET;
-	for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
-		if (cell->highlight != highlight) {
-			flen += 3;	/* TO_SA to switch highlight. */
-			highlight = cell->highlight;
-		}
-		if (cell->f_color != f_color) {
-			flen += 3;	/* TO_SA to switch color. */
-			f_color = cell->f_color;
-		}
-	}
-	if (highlight != TAX_RESET)
-		flen += 3;	/* TO_SA to reset hightlight. */
-	if (f_color != TAC_RESET)
-		flen += 3;	/* TO_SA to reset color. */
-	if (line->len < tp->view.cols)
-		flen += 4;	/* Postfix (TO_RA). */
-
-	/* Find the line in the list. */
-	i = tp->view.rows - 2 - line_nr;
-	list_for_each_entry_reverse(s, &tp->lines, list)
-		if (--i <= 0)
-			break;
-	/*
-	 * Check if the line needs to get reallocated.
-	 */
-	if (s->len != flen) {
-		/* Reallocate string. */
-		n = tty3270_alloc_string(tp, flen);
-		list_add(&n->list, &s->list);
-		list_del_init(&s->list);
-		if (!list_empty(&s->update))
-			list_del_init(&s->update);
-		free_string(&tp->freemem, s);
-		s = n;
-	}
-
-	/* Write 3270 data fragment. */
-	cp = s->string;
-	*cp++ = TO_SBA;
-	*cp++ = 0;
-	*cp++ = 0;
-
-	highlight = TAX_RESET;
-	f_color = TAC_RESET;
-	for (i = 0, cell = line->cells; i < line->len; i++, cell++) {
-		if (cell->highlight != highlight) {
-			*cp++ = TO_SA;
-			*cp++ = TAT_EXTHI;
-			*cp++ = cell->highlight;
-			highlight = cell->highlight;
-		}
-		if (cell->f_color != f_color) {
-			*cp++ = TO_SA;
-			*cp++ = TAT_COLOR;
-			*cp++ = cell->f_color;
-			f_color = cell->f_color;
-		}
-		*cp++ = cell->character;
-	}
-	if (highlight != TAX_RESET) {
-		*cp++ = TO_SA;
-		*cp++ = TAT_EXTHI;
-		*cp++ = TAX_RESET;
-	}
-	if (f_color != TAC_RESET) {
-		*cp++ = TO_SA;
-		*cp++ = TAT_COLOR;
-		*cp++ = TAC_RESET;
-	}
-	if (line->len < tp->view.cols) {
-		*cp++ = TO_RA;
-		*cp++ = 0;
-		*cp++ = 0;
-		*cp++ = 0;
-	}
-
-	if (tp->nr_up + line_nr < tp->view.rows - 2) {
-		/* Line is currently visible on screen. */
-		tty3270_update_string(tp, s, line_nr);
-		/* Add line to update list. */
-		if (list_empty(&s->update)) {
-			list_add_tail(&s->update, &tp->update);
-			tp->update_flags |= TTY_UPDATE_LIST;
-		}
-	}
-}
-
-/*
- * Do carriage return.
- */
-static void
-tty3270_cr(struct tty3270 *tp)
-{
-	tp->cx = 0;
-}
-
-/*
- * Do line feed.
- */
-static void
-tty3270_lf(struct tty3270 *tp)
-{
-	struct tty3270_line temp;
-	int i;
-
-	tty3270_convert_line(tp, tp->cy);
-	if (tp->cy < tp->view.rows - 3) {
-		tp->cy++;
-		return;
-	}
-	/* Last line just filled up. Add new, blank line. */
-	tty3270_blank_line(tp);
-	temp = tp->screen[0];
-	temp.len = 0;
-	for (i = 0; i < tp->view.rows - 3; i++)
-		tp->screen[i] = tp->screen[i+1];
-	tp->screen[tp->view.rows - 3] = temp;
-	tty3270_rebuild_update(tp);
-}
-
-static void
-tty3270_ri(struct tty3270 *tp)
-{
-	if (tp->cy > 0) {
-	    tty3270_convert_line(tp, tp->cy);
-	    tp->cy--;
-	}
-}
-
-/*
- * Insert characters at current position.
- */
-static void
-tty3270_insert_characters(struct tty3270 *tp, int n)
-{
-	struct tty3270_line *line;
-	int k;
-
-	line = tp->screen + tp->cy;
-	while (line->len < tp->cx) {
-		line->cells[line->len].character = tp->view.ascebc[' '];
-		line->cells[line->len].highlight = TAX_RESET;
-		line->cells[line->len].f_color = TAC_RESET;
-		line->len++;
-	}
-	if (n > tp->view.cols - tp->cx)
-		n = tp->view.cols - tp->cx;
-	k = min_t(int, line->len - tp->cx, tp->view.cols - tp->cx - n);
-	while (k--)
-		line->cells[tp->cx + n + k] = line->cells[tp->cx + k];
-	line->len += n;
-	if (line->len > tp->view.cols)
-		line->len = tp->view.cols;
-	while (n-- > 0) {
-		line->cells[tp->cx + n].character = tp->view.ascebc[' '];
-		line->cells[tp->cx + n].highlight = tp->highlight;
-		line->cells[tp->cx + n].f_color = tp->f_color;
-	}
-}
-
-/*
- * Delete characters at current position.
- */
-static void
-tty3270_delete_characters(struct tty3270 *tp, int n)
-{
-	struct tty3270_line *line;
-	int i;
-
-	line = tp->screen + tp->cy;
-	if (line->len <= tp->cx)
-		return;
-	if (line->len - tp->cx <= n) {
-		line->len = tp->cx;
-		return;
-	}
-	for (i = tp->cx; i + n < line->len; i++)
-		line->cells[i] = line->cells[i + n];
-	line->len -= n;
-}
-
-/*
- * Erase characters at current position.
- */
-static void
-tty3270_erase_characters(struct tty3270 *tp, int n)
-{
-	struct tty3270_line *line;
-	struct tty3270_cell *cell;
-
-	line = tp->screen + tp->cy;
-	while (line->len > tp->cx && n-- > 0) {
-		cell = line->cells + tp->cx++;
-		cell->character = ' ';
-		cell->highlight = TAX_RESET;
-		cell->f_color = TAC_RESET;
-	}
-	tp->cx += n;
-	tp->cx = min_t(int, tp->cx, tp->view.cols - 1);
-}
-
-/*
- * Erase line, 3 different cases:
- *  Esc [ 0 K	Erase from current position to end of line inclusive
- *  Esc [ 1 K	Erase from beginning of line to current position inclusive
- *  Esc [ 2 K	Erase entire line (without moving cursor)
- */
-static void
-tty3270_erase_line(struct tty3270 *tp, int mode)
-{
-	struct tty3270_line *line;
-	struct tty3270_cell *cell;
-	int i;
-
-	line = tp->screen + tp->cy;
-	if (mode == 0)
-		line->len = tp->cx;
-	else if (mode == 1) {
-		for (i = 0; i < tp->cx; i++) {
-			cell = line->cells + i;
-			cell->character = ' ';
-			cell->highlight = TAX_RESET;
-			cell->f_color = TAC_RESET;
-		}
-		if (line->len <= tp->cx)
-			line->len = tp->cx + 1;
-	} else if (mode == 2)
-		line->len = 0;
-	tty3270_convert_line(tp, tp->cy);
-}
-
-/*
- * Erase display, 3 different cases:
- *  Esc [ 0 J	Erase from current position to bottom of screen inclusive
- *  Esc [ 1 J	Erase from top of screen to current position inclusive
- *  Esc [ 2 J	Erase entire screen (without moving the cursor)
- */
-static void
-tty3270_erase_display(struct tty3270 *tp, int mode)
-{
-	int i;
-
-	if (mode == 0) {
-		tty3270_erase_line(tp, 0);
-		for (i = tp->cy + 1; i < tp->view.rows - 2; i++) {
-			tp->screen[i].len = 0;
-			tty3270_convert_line(tp, i);
-		}
-	} else if (mode == 1) {
-		for (i = 0; i < tp->cy; i++) {
-			tp->screen[i].len = 0;
-			tty3270_convert_line(tp, i);
-		}
-		tty3270_erase_line(tp, 1);
-	} else if (mode == 2) {
-		for (i = 0; i < tp->view.rows - 2; i++) {
-			tp->screen[i].len = 0;
-			tty3270_convert_line(tp, i);
-		}
-	}
-	tty3270_rebuild_update(tp);
-}
-
-/*
- * Set attributes found in an escape sequence.
- *  Esc [ <attr> ; <attr> ; ... m
- */
-static void
-tty3270_set_attributes(struct tty3270 *tp)
-{
-	static unsigned char f_colors[] = {
-		TAC_DEFAULT, TAC_RED, TAC_GREEN, TAC_YELLOW, TAC_BLUE,
-		TAC_PINK, TAC_TURQ, TAC_WHITE, 0, TAC_DEFAULT
-	};
-	int i, attr;
-
-	for (i = 0; i <= tp->esc_npar; i++) {
-		attr = tp->esc_par[i];
-		switch (attr) {
-		case 0:		/* Reset */
-			tp->highlight = TAX_RESET;
-			tp->f_color = TAC_RESET;
-			break;
-		/* Highlight. */
-		case 4:		/* Start underlining. */
-			tp->highlight = TAX_UNDER;
-			break;
-		case 5:		/* Start blink. */
-			tp->highlight = TAX_BLINK;
-			break;
-		case 7:		/* Start reverse. */
-			tp->highlight = TAX_REVER;
-			break;
-		case 24:	/* End underlining */
-			if (tp->highlight == TAX_UNDER)
-				tp->highlight = TAX_RESET;
-			break;
-		case 25:	/* End blink. */
-			if (tp->highlight == TAX_BLINK)
-				tp->highlight = TAX_RESET;
-			break;
-		case 27:	/* End reverse. */
-			if (tp->highlight == TAX_REVER)
-				tp->highlight = TAX_RESET;
-			break;
-		/* Foreground color. */
-		case 30:	/* Black */
-		case 31:	/* Red */
-		case 32:	/* Green */
-		case 33:	/* Yellow */
-		case 34:	/* Blue */
-		case 35:	/* Magenta */
-		case 36:	/* Cyan */
-		case 37:	/* White */
-		case 39:	/* Black */
-			tp->f_color = f_colors[attr - 30];
-			break;
-		}
-	}
-}
-
-static inline int
-tty3270_getpar(struct tty3270 *tp, int ix)
-{
-	return (tp->esc_par[ix] > 0) ? tp->esc_par[ix] : 1;
-}
-
-static void
-tty3270_goto_xy(struct tty3270 *tp, int cx, int cy)
-{
-	int max_cx = max(0, cx);
-	int max_cy = max(0, cy);
-
-	tp->cx = min_t(int, tp->view.cols - 1, max_cx);
-	cy = min_t(int, tp->view.rows - 3, max_cy);
-	if (cy != tp->cy) {
-		tty3270_convert_line(tp, tp->cy);
-		tp->cy = cy;
-	}
-}
-
-/*
- * Process escape sequences. Known sequences:
- *  Esc 7			Save Cursor Position
- *  Esc 8			Restore Cursor Position
- *  Esc [ Pn ; Pn ; .. m	Set attributes
- *  Esc [ Pn ; Pn H		Cursor Position
- *  Esc [ Pn ; Pn f		Cursor Position
- *  Esc [ Pn A			Cursor Up
- *  Esc [ Pn B			Cursor Down
- *  Esc [ Pn C			Cursor Forward
- *  Esc [ Pn D			Cursor Backward
- *  Esc [ Pn G			Cursor Horizontal Absolute
- *  Esc [ Pn X			Erase Characters
- *  Esc [ Ps J			Erase in Display
- *  Esc [ Ps K			Erase in Line
- * // FIXME: add all the new ones.
- *
- *  Pn is a numeric parameter, a string of zero or more decimal digits.
- *  Ps is a selective parameter.
- */
-static void
-tty3270_escape_sequence(struct tty3270 *tp, char ch)
-{
-	enum { ESnormal, ESesc, ESsquare, ESgetpars };
-
-	if (tp->esc_state == ESnormal) {
-		if (ch == 0x1b)
-			/* Starting new escape sequence. */
-			tp->esc_state = ESesc;
-		return;
-	}
-	if (tp->esc_state == ESesc) {
-		tp->esc_state = ESnormal;
-		switch (ch) {
-		case '[':
-			tp->esc_state = ESsquare;
-			break;
-		case 'E':
-			tty3270_cr(tp);
-			tty3270_lf(tp);
-			break;
-		case 'M':
-			tty3270_ri(tp);
-			break;
-		case 'D':
-			tty3270_lf(tp);
-			break;
-		case 'Z':		/* Respond ID. */
-			kbd_puts_queue(&tp->port, "\033[?6c");
-			break;
-		case '7':		/* Save cursor position. */
-			tp->saved_cx = tp->cx;
-			tp->saved_cy = tp->cy;
-			tp->saved_highlight = tp->highlight;
-			tp->saved_f_color = tp->f_color;
-			break;
-		case '8':		/* Restore cursor position. */
-			tty3270_convert_line(tp, tp->cy);
-			tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
-			tp->highlight = tp->saved_highlight;
-			tp->f_color = tp->saved_f_color;
-			break;
-		case 'c':		/* Reset terminal. */
-			tp->cx = tp->saved_cx = 0;
-			tp->cy = tp->saved_cy = 0;
-			tp->highlight = tp->saved_highlight = TAX_RESET;
-			tp->f_color = tp->saved_f_color = TAC_RESET;
-			tty3270_erase_display(tp, 2);
-			break;
-		}
-		return;
-	}
-	if (tp->esc_state == ESsquare) {
-		tp->esc_state = ESgetpars;
-		memset(tp->esc_par, 0, sizeof(tp->esc_par));
-		tp->esc_npar = 0;
-		tp->esc_ques = (ch == '?');
-		if (tp->esc_ques)
-			return;
-	}
-	if (tp->esc_state == ESgetpars) {
-		if (ch == ';' && tp->esc_npar < ESCAPE_NPAR - 1) {
-			tp->esc_npar++;
-			return;
-		}
-		if (ch >= '0' && ch <= '9') {
-			tp->esc_par[tp->esc_npar] *= 10;
-			tp->esc_par[tp->esc_npar] += ch - '0';
-			return;
-		}
-	}
-	tp->esc_state = ESnormal;
-	if (ch == 'n' && !tp->esc_ques) {
-		if (tp->esc_par[0] == 5)		/* Status report. */
-			kbd_puts_queue(&tp->port, "\033[0n");
-		else if (tp->esc_par[0] == 6) {	/* Cursor report. */
-			char buf[40];
-			sprintf(buf, "\033[%d;%dR", tp->cy + 1, tp->cx + 1);
-			kbd_puts_queue(&tp->port, buf);
-		}
-		return;
-	}
-	if (tp->esc_ques)
-		return;
-	switch (ch) {
-	case 'm':
-		tty3270_set_attributes(tp);
-		break;
-	case 'H':	/* Set cursor position. */
-	case 'f':
-		tty3270_goto_xy(tp, tty3270_getpar(tp, 1) - 1,
-				tty3270_getpar(tp, 0) - 1);
-		break;
-	case 'd':	/* Set y position. */
-		tty3270_goto_xy(tp, tp->cx, tty3270_getpar(tp, 0) - 1);
-		break;
-	case 'A':	/* Cursor up. */
-	case 'F':
-		tty3270_goto_xy(tp, tp->cx, tp->cy - tty3270_getpar(tp, 0));
-		break;
-	case 'B':	/* Cursor down. */
-	case 'e':
-	case 'E':
-		tty3270_goto_xy(tp, tp->cx, tp->cy + tty3270_getpar(tp, 0));
-		break;
-	case 'C':	/* Cursor forward. */
-	case 'a':
-		tty3270_goto_xy(tp, tp->cx + tty3270_getpar(tp, 0), tp->cy);
-		break;
-	case 'D':	/* Cursor backward. */
-		tty3270_goto_xy(tp, tp->cx - tty3270_getpar(tp, 0), tp->cy);
-		break;
-	case 'G':	/* Set x position. */
-	case '`':
-		tty3270_goto_xy(tp, tty3270_getpar(tp, 0), tp->cy);
-		break;
-	case 'X':	/* Erase Characters. */
-		tty3270_erase_characters(tp, tty3270_getpar(tp, 0));
-		break;
-	case 'J':	/* Erase display. */
-		tty3270_erase_display(tp, tp->esc_par[0]);
-		break;
-	case 'K':	/* Erase line. */
-		tty3270_erase_line(tp, tp->esc_par[0]);
-		break;
-	case 'P':	/* Delete characters. */
-		tty3270_delete_characters(tp, tty3270_getpar(tp, 0));
-		break;
-	case '@':	/* Insert characters. */
-		tty3270_insert_characters(tp, tty3270_getpar(tp, 0));
-		break;
-	case 's':	/* Save cursor position. */
-		tp->saved_cx = tp->cx;
-		tp->saved_cy = tp->cy;
-		tp->saved_highlight = tp->highlight;
-		tp->saved_f_color = tp->f_color;
-		break;
-	case 'u':	/* Restore cursor position. */
-		tty3270_convert_line(tp, tp->cy);
-		tty3270_goto_xy(tp, tp->saved_cx, tp->saved_cy);
-		tp->highlight = tp->saved_highlight;
-		tp->f_color = tp->saved_f_color;
-		break;
-	}
-}
-
-/*
- * String write routine for 3270 ttys
- */
-static void
-tty3270_do_write(struct tty3270 *tp, struct tty_struct *tty,
-		const unsigned char *buf, int count)
-{
-	int i_msg, i;
-
-	spin_lock_bh(&tp->view.lock);
-	for (i_msg = 0; !tty->flow.stopped && i_msg < count; i_msg++) {
-		if (tp->esc_state != 0) {
-			/* Continue escape sequence. */
-			tty3270_escape_sequence(tp, buf[i_msg]);
-			continue;
-		}
-
-		switch (buf[i_msg]) {
-		case 0x07:		/* '\a' -- Alarm */
-			tp->wcc |= TW_PLUSALARM;
-			break;
-		case 0x08:		/* Backspace. */
-			if (tp->cx > 0) {
-				tp->cx--;
-				tty3270_put_character(tp, ' ');
-			}
-			break;
-		case 0x09:		/* '\t' -- Tabulate */
-			for (i = tp->cx % 8; i < 8; i++) {
-				if (tp->cx >= tp->view.cols) {
-					tty3270_cr(tp);
-					tty3270_lf(tp);
-					break;
-				}
-				tty3270_put_character(tp, ' ');
-				tp->cx++;
-			}
-			break;
-		case 0x0a:		/* '\n' -- New Line */
-			tty3270_cr(tp);
-			tty3270_lf(tp);
-			break;
-		case 0x0c:		/* '\f' -- Form Feed */
-			tty3270_erase_display(tp, 2);
-			tp->cx = tp->cy = 0;
-			break;
-		case 0x0d:		/* '\r' -- Carriage Return */
-			tp->cx = 0;
-			break;
-		case 0x0f:		/* SuSE "exit alternate mode" */
-			break;
-		case 0x1b:		/* Start escape sequence. */
-			tty3270_escape_sequence(tp, buf[i_msg]);
-			break;
-		default:		/* Insert normal character. */
-			if (tp->cx >= tp->view.cols) {
-				tty3270_cr(tp);
-				tty3270_lf(tp);
-			}
-			tty3270_put_character(tp, buf[i_msg]);
-			tp->cx++;
-			break;
-		}
-	}
-	/* Convert current line to 3270 data fragment. */
-	tty3270_convert_line(tp, tp->cy);
-
-	/* Setup timer to update display after 1/10 second */
-	if (!timer_pending(&tp->timer))
-		tty3270_set_timer(tp, HZ/10);
-
-	spin_unlock_bh(&tp->view.lock);
-}
-
-/*
- * String write routine for 3270 ttys
- */
-static int
-tty3270_write(struct tty_struct * tty,
-	      const unsigned char *buf, int count)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return 0;
-	if (tp->char_count > 0) {
-		tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
-		tp->char_count = 0;
-	}
-	tty3270_do_write(tp, tty, buf, count);
-	return count;
-}
-
-/*
- * Put single characters to the ttys character buffer
- */
-static int tty3270_put_char(struct tty_struct *tty, unsigned char ch)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp || tp->char_count >= TTY3270_CHAR_BUF_SIZE)
-		return 0;
-	tp->char_buf[tp->char_count++] = ch;
-	return 1;
-}
-
-/*
- * Flush all characters from the ttys characeter buffer put there
- * by tty3270_put_char.
- */
-static void
-tty3270_flush_chars(struct tty_struct *tty)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return;
-	if (tp->char_count > 0) {
-		tty3270_do_write(tp, tty, tp->char_buf, tp->char_count);
-		tp->char_count = 0;
-	}
-}
-
-/*
- * Check for visible/invisible input switches
- */
-static void
-tty3270_set_termios(struct tty_struct *tty, const struct ktermios *old)
-{
-	struct tty3270 *tp;
-	int new;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return;
-	spin_lock_bh(&tp->view.lock);
-	if (L_ICANON(tty)) {
-		new = L_ECHO(tty) ? TF_INPUT: TF_INPUTN;
-		if (new != tp->inattr) {
-			tp->inattr = new;
-			tty3270_update_prompt(tp, NULL, 0);
-			tty3270_set_timer(tp, 1);
-		}
-	}
-	spin_unlock_bh(&tp->view.lock);
-}
-
-/*
- * Disable reading from a 3270 tty
- */
-static void
-tty3270_throttle(struct tty_struct * tty)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return;
-	tp->throttle = 1;
-}
-
-/*
- * Enable reading from a 3270 tty
- */
-static void
-tty3270_unthrottle(struct tty_struct * tty)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return;
-	tp->throttle = 0;
-	if (tp->attn)
-		tty3270_issue_read(tp, 1);
-}
-
-/*
- * Hang up the tty device.
- */
-static void
-tty3270_hangup(struct tty_struct *tty)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return;
-	spin_lock_bh(&tp->view.lock);
-	tp->cx = tp->saved_cx = 0;
-	tp->cy = tp->saved_cy = 0;
-	tp->highlight = tp->saved_highlight = TAX_RESET;
-	tp->f_color = tp->saved_f_color = TAC_RESET;
-	tty3270_blank_screen(tp);
-	while (tp->nr_lines < tp->view.rows - 2)
-		tty3270_blank_line(tp);
-	tp->update_flags = TTY_UPDATE_ALL;
-	spin_unlock_bh(&tp->view.lock);
-	tty3270_set_timer(tp, 1);
-}
-
-static void
-tty3270_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-}
-
-static int tty3270_ioctl(struct tty_struct *tty, unsigned int cmd,
-			 unsigned long arg)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return -ENODEV;
-	if (tty_io_error(tty))
-		return -EIO;
-	return kbd_ioctl(tp->kbd, cmd, arg);
-}
-
-#ifdef CONFIG_COMPAT
-static long tty3270_compat_ioctl(struct tty_struct *tty,
-				 unsigned int cmd, unsigned long arg)
-{
-	struct tty3270 *tp;
-
-	tp = tty->driver_data;
-	if (!tp)
-		return -ENODEV;
-	if (tty_io_error(tty))
-		return -EIO;
-	return kbd_ioctl(tp->kbd, cmd, (unsigned long)compat_ptr(arg));
-}
-#endif
-
-static const struct tty_operations tty3270_ops = {
-	.install = tty3270_install,
-	.cleanup = tty3270_cleanup,
-	.open = tty3270_open,
-	.close = tty3270_close,
-	.write = tty3270_write,
-	.put_char = tty3270_put_char,
-	.flush_chars = tty3270_flush_chars,
-	.write_room = tty3270_write_room,
-	.throttle = tty3270_throttle,
-	.unthrottle = tty3270_unthrottle,
-	.hangup = tty3270_hangup,
-	.wait_until_sent = tty3270_wait_until_sent,
-	.ioctl = tty3270_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl = tty3270_compat_ioctl,
-#endif
-	.set_termios = tty3270_set_termios
-};
-
-static void tty3270_create_cb(int minor)
-{
-	tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
-}
-
-static void tty3270_destroy_cb(int minor)
-{
-	tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
-}
-
-static struct raw3270_notifier tty3270_notifier =
-{
-	.create = tty3270_create_cb,
-	.destroy = tty3270_destroy_cb,
-};
-
-/*
- * 3270 tty registration code called from tty_init().
- * Most kernel services (incl. kmalloc) are available at this poimt.
- */
-static int __init tty3270_init(void)
-{
-	struct tty_driver *driver;
-	int ret;
-
-	driver = tty_alloc_driver(RAW3270_MAXDEVS,
-				  TTY_DRIVER_REAL_RAW |
-				  TTY_DRIVER_DYNAMIC_DEV |
-				  TTY_DRIVER_RESET_TERMIOS);
-	if (IS_ERR(driver))
-		return PTR_ERR(driver);
-
-	/*
-	 * Initialize the tty_driver structure
-	 * Entries in tty3270_driver that are NOT initialized:
-	 * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc
-	 */
-	driver->driver_name = "tty3270";
-	driver->name = "3270/tty";
-	driver->major = IBM_TTY3270_MAJOR;
-	driver->minor_start = RAW3270_FIRSTMINOR;
-	driver->name_base = RAW3270_FIRSTMINOR;
-	driver->type = TTY_DRIVER_TYPE_SYSTEM;
-	driver->subtype = SYSTEM_TYPE_TTY;
-	driver->init_termios = tty_std_termios;
-	tty_set_operations(driver, &tty3270_ops);
-	ret = tty_register_driver(driver);
-	if (ret) {
-		tty_driver_kref_put(driver);
-		return ret;
-	}
-	tty3270_driver = driver;
-	raw3270_register_notifier(&tty3270_notifier);
-	return 0;
-}
-
-static void __exit
-tty3270_exit(void)
-{
-	struct tty_driver *driver;
-
-	raw3270_unregister_notifier(&tty3270_notifier);
-	driver = tty3270_driver;
-	tty3270_driver = NULL;
-	tty_unregister_driver(driver);
-	tty_driver_kref_put(driver);
-	tty3270_del_views();
-}
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(IBM_TTY3270_MAJOR);
-
-module_init(tty3270_init);
-module_exit(tty3270_exit);
diff --git a/drivers/s390/char/tty3270.h b/drivers/s390/char/tty3270.h
deleted file mode 100644
index 52ceed6f8408..000000000000
--- a/drivers/s390/char/tty3270.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *    Copyright IBM Corp. 2007
- *
- */
-
-#ifndef __DRIVERS_S390_CHAR_TTY3270_H
-#define __DRIVERS_S390_CHAR_TTY3270_H
-
-#include <linux/tty.h>
-#include <linux/tty_driver.h>
-
-extern struct tty_driver *tty3270_driver;
-
-#endif /* __DRIVERS_S390_CHAR_TTY3270_H */