Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits)
  jsm: fixing error if the driver fails to load
  jsm: removing the uart structure and filename on error
  tty: Add a new VT mode which is like VT_PROCESS but doesn't require a VT_RELDISP ioctl call
  tty: Keep the default buffering to sub-page units
  tty: Fix up char drivers request_room usage
  tty: Fix the ldisc hangup race
  serial: timberdale: Remove dependancies
  nozomi: Tidy up the PCI table
  nozomi: Fix mutex handling
  nozomi: Add tty_port usage
  sdio_uart: Use kfifo instead of the messy circ stuff
  serial: bcm63xx_uart: allow more than one uart to be registered.
  serial: bcm63xx_uart: don't use kfree() on non kmalloced area.
  serial: bfin_5xx: pull in linux/io.h for ioremap prototypes
  serial: bfin_5xx: kgdboc should accept gdb break only when it is active
  serial: bfin_5xx: need to disable DMA TX interrupt too
  serial: bfin_5xx: remove useless gpio handling with hard flow control
  Char: synclink, remove unnecessary checks
  tty: declare MODULE_FIRMWARE in various drivers
  ip2: Add module parameter.
  ...

14 files changed, 307 insertions, 261 deletions

diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 4254457d3911..b861c08263a4 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -158,13 +158,11 @@ static unsigned int cy_isa_addresses[] = {
 
 #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
 
-#ifdef MODULE
 static long maddr[NR_CARDS];
 static int irq[NR_CARDS];
 
 module_param_array(maddr, long, NULL, 0);
 module_param_array(irq, int, NULL, 0);
-#endif
 
 #endif                          /* CONFIG_ISA */
 
@@ -598,12 +596,6 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
         save_car = readb(base_addr + (CyCAR << index));
         cy_writeb(base_addr + (CyCAR << index), save_xir);
 
-        /* validate the port# (as configured and open) */
-        if (channel + chip * 4 >= cinfo->nports) {
-                cy_writeb(base_addr + (CySRER << index),
-                          readb(base_addr + (CySRER << index)) & ~CyTxRdy);
-                goto end;
-        }
         info = &cinfo->ports[channel + chip * 4];
         tty = tty_port_tty_get(&info->port);
         if (tty == NULL) {
@@ -3316,13 +3308,10 @@ static int __init cy_detect_isa(void)
         unsigned short cy_isa_irq, nboard;
         void __iomem *cy_isa_address;
         unsigned short i, j, cy_isa_nchan;
-#ifdef MODULE
         int isparam = 0;
-#endif
 
         nboard = 0;
 
-#ifdef MODULE
         /* Check for module parameters */
         for (i = 0; i < NR_CARDS; i++) {
                 if (maddr[i] || i) {
@@ -3332,7 +3321,6 @@ static int __init cy_detect_isa(void)
                 if (!maddr[i])
                         break;
         }
-#endif
 
         /* scan the address table probing for Cyclom-Y/ISA boards */
         for (i = 0; i < NR_ISA_ADDRS; i++) {
@@ -3353,11 +3341,10 @@ static int __init cy_detect_isa(void)
                         iounmap(cy_isa_address);
                         continue;
                 }
-#ifdef MODULE
+
                 if (isparam && i < NR_CARDS && irq[i])
                         cy_isa_irq = irq[i];
                 else
-#endif
                         /* find out the board's irq by probing */
                         cy_isa_irq = detect_isa_irq(cy_isa_address);
                 if (cy_isa_irq == 0) {
@@ -4208,3 +4195,4 @@ module_exit(cy_cleanup_module);
 MODULE_LICENSE("GPL");
 MODULE_VERSION(CY_VERSION);
 MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
+MODULE_FIRMWARE("cyzfirm.bin");
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 4c3b59be286a..465185fc0f52 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -146,7 +146,7 @@ static void hvc_console_print(struct console *co, const char *b,
                 return;
 
         /* This console adapter was removed so it is not usable. */
-        if (vtermnos[index] < 0)
+        if (vtermnos[index] == -1)
                 return;
 
         while (count > 0 || i > 0) {
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 517271c762e6..911e1da6def2 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -208,6 +208,7 @@ static int DumpFifoBuffer( char __user *, int);
 
 static void ip2_init_board(int, const struct firmware *);
 static unsigned short find_eisa_board(int);
+static int ip2_setup(char *str);
 
 /***************/
 /* Static Data */
@@ -263,7 +264,7 @@ static int tracewrap;
 /* Macros */
 /**********/
 
-#if defined(MODULE) && defined(IP2DEBUG_OPEN)
+#ifdef IP2DEBUG_OPEN
 #define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \
                     tty->name,(pCh->flags), \
                     tty->count,/*GET_USE_COUNT(module)*/0,s)
@@ -285,7 +286,10 @@ MODULE_AUTHOR("Doug McNash");
 MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
 MODULE_LICENSE("GPL");
 
+#define MAX_CMD_STR     50
+
 static int poll_only;
+static char cmd[MAX_CMD_STR];
 
 static int Eisa_irq;
 static int Eisa_slot;
@@ -309,6 +313,8 @@ module_param_array(io, int, NULL, 0);
 MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards");
 module_param(poll_only, bool, 0);
 MODULE_PARM_DESC(poll_only, "Do not use card interrupts");
+module_param_string(ip2, cmd, MAX_CMD_STR, 0);
+MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='");
 
 /* for sysfs class support */
 static struct class *ip2_class;
@@ -487,7 +493,6 @@ static const struct firmware *ip2_request_firmware(void)
         return fw;
 }
 
-#ifndef MODULE
 /******************************************************************************
  *      ip2_setup:
  *              str: kernel command line string
@@ -531,7 +536,6 @@ static int __init ip2_setup(char *str)
         return 1;
 }
 __setup("ip2=", ip2_setup);
-#endif /* !MODULE */
 
 static int __init ip2_loadmain(void)
 {
@@ -539,14 +543,20 @@ static int __init ip2_loadmain(void)
         int err = 0;
         i2eBordStrPtr pB = NULL;
         int rc = -1;
-        struct pci_dev *pdev = NULL;
         const struct firmware *fw = NULL;
+        char *str;
+
+        str = cmd;
 
         if (poll_only) {
                 /* Hard lock the interrupts to zero */
                 irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0;
         }
 
+        /* Check module parameter with 'ip2=' has been passed or not */
+        if (!poll_only && (!strncmp(str, "ip2=", 4)))
+                ip2_setup(str);
+
         ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0);
 
         /* process command line arguments to modprobe or
@@ -612,6 +622,7 @@ static int __init ip2_loadmain(void)
                 case PCI:
 #ifdef CONFIG_PCI
                 {
+                        struct pci_dev *pdev = NULL;
                         u32 addr;
                         int status;
 
@@ -626,7 +637,7 @@ static int __init ip2_loadmain(void)
 
                         if (pci_enable_device(pdev)) {
                                 dev_err(&pdev->dev, "can't enable device\n");
-                                break;
+                                goto out;
                         }
                         ip2config.type[i] = PCI;
                         ip2config.pci_dev[i] = pci_dev_get(pdev);
@@ -638,6 +649,8 @@ static int __init ip2_loadmain(void)
                                 dev_err(&pdev->dev, "I/O address error\n");
 
                         ip2config.irq[i] = pdev->irq;
+out:
+                        pci_dev_put(pdev);
                 }
 #else
                         printk(KERN_ERR "IP2: PCI card specified but PCI "
@@ -656,7 +669,6 @@ static int __init ip2_loadmain(void)
                         break;
                 }       /* switch */
         }       /* for */
-        pci_dev_put(pdev);
 
         for (i = 0; i < IP2_MAX_BOARDS; ++i) {
                 if (ip2config.addr[i]) {
@@ -3197,3 +3209,5 @@ static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
 };
 
 MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
+
+MODULE_FIRMWARE("intelliport2.bin");
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 300d5bd6cd06..be2e8f9a27c3 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -113,6 +113,8 @@
  *              64-bit verification
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/firmware.h>
 #include <linux/kernel.h>
@@ -140,7 +142,6 @@
 #define InterruptTheCard(base) outw(0, (base) + 0xc)
 #define ClearInterrupt(base) inw((base) + 0x0a)
 
-#define pr_dbg(str...) pr_debug("ISICOM: " str)
 #ifdef DEBUG
 #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
 #else
@@ -249,8 +250,7 @@ static int lock_card(struct isi_board *card)
                 spin_unlock_irqrestore(&card->card_lock, card->flags);
                 msleep(10);
         }
-        printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
-                card->base);
+        pr_warning("Failed to lock Card (0x%lx)\n", card->base);
 
         return 0;       /* Failed to acquire the card! */
 }
@@ -379,13 +379,13 @@ static inline int __isicom_paranoia_check(struct isi_port const *port,
         char *name, const char *routine)
 {
         if (!port) {
-                printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
-                        "dev %s in %s.\n", name, routine);
+                pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
+                           name, routine);
                 return 1;
         }
         if (port->magic != ISICOM_MAGIC) {
-                printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
-                        "dev %s in %s.\n", name, routine);
+                pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
+                           name, routine);
                 return 1;
         }
 
@@ -450,8 +450,8 @@ static void isicom_tx(unsigned long _data)
                 if (!(inw(base + 0x02) & (1 << port->channel)))
                         continue;
 
-                pr_dbg("txing %d bytes, port%d.\n", txcount,
-                        port->channel + 1);
+                pr_debug("txing %d bytes, port%d.\n",
+                         txcount, port->channel + 1);
                 outw((port->channel << isi_card[card].shift_count) | txcount,
                         base);
                 residue = NO;
@@ -547,8 +547,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
         byte_count = header & 0xff;
 
         if (channel + 1 > card->port_count) {
-                printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
-                        "%d(channel) > port_count.\n", base, channel+1);
+                pr_warning("%s(0x%lx): %d(channel) > port_count.\n",
+                           __func__, base, channel+1);
                 outw(0x0000, base+0x04); /* enable interrupts */
                 spin_unlock(&card->card_lock);
                 return IRQ_HANDLED;
@@ -582,14 +582,15 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
                                 if (port->status & ISI_DCD) {
                                         if (!(header & ISI_DCD)) {
                                         /* Carrier has been lost  */
-                                                pr_dbg("interrupt: DCD->low.\n"
-                                                        );
+                                                pr_debug("%s: DCD->low.\n",
+                                                         __func__);
                                                 port->status &= ~ISI_DCD;
                                                 tty_hangup(tty);
                                         }
                                 } else if (header & ISI_DCD) {
                                 /* Carrier has been detected */
-                                        pr_dbg("interrupt: DCD->high.\n");
+                                        pr_debug("%s: DCD->high.\n",
+                                                __func__);
                                         port->status |= ISI_DCD;
                                         wake_up_interruptible(&port->port.open_wait);
                                 }
@@ -641,17 +642,19 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
                         break;
 
                 case 2: /* Statistics            */
-                        pr_dbg("isicom_interrupt: stats!!!.\n");
+                        pr_debug("%s: stats!!!\n", __func__);
                         break;
 
                 default:
-                        pr_dbg("Intr: Unknown code in status packet.\n");
+                        pr_debug("%s: Unknown code in status packet.\n",
+                                 __func__);
                         break;
                 }
         } else {                                /* Data   Packet */
 
                 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
-                pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
+                pr_debug("%s: Can rx %d of %d bytes.\n",
+                         __func__, count, byte_count);
                 word_count = count >> 1;
                 insw(base, rp, word_count);
                 byte_count -= (word_count << 1);
@@ -661,8 +664,8 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
                         byte_count -= 2;
                 }
                 if (byte_count > 0) {
-                        pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
-                                "bytes...\n", base, channel + 1);
+                        pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
+                                 __func__, base, channel + 1);
                 /* drain out unread xtra data */
                 while (byte_count > 0) {
                                 inw(base);
@@ -888,8 +891,8 @@ static void isicom_shutdown_port(struct isi_port *port)
         struct isi_board *card = port->card;
 
         if (--card->count < 0) {
-                pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
-                        card->base, card->count);
+                pr_debug("%s: bad board(0x%lx) count %d.\n",
+                         __func__, card->base, card->count);
                 card->count = 0;
         }
         /* last port was closed, shutdown that board too */
@@ -1681,13 +1684,13 @@ static int __init isicom_init(void)
 
         retval = tty_register_driver(isicom_normal);
         if (retval) {
-                pr_dbg("Couldn't register the dialin driver\n");
+                pr_debug("Couldn't register the dialin driver\n");
                 goto err_puttty;
         }
 
         retval = pci_register_driver(&isicom_driver);
         if (retval < 0) {
-                printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
+                pr_err("Unable to register pci driver.\n");
                 goto err_unrtty;
         }
 
@@ -1717,3 +1720,8 @@ module_exit(isicom_exit);
 MODULE_AUTHOR("MultiTech");
 MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
 MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("isi608.bin");
+MODULE_FIRMWARE("isi608em.bin");
+MODULE_FIRMWARE("isi616em.bin");
+MODULE_FIRMWARE("isi4608.bin");
+MODULE_FIRMWARE("isi4616.bin");
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 63ee3bbc1ce4..166495d6a1d7 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -164,24 +164,25 @@ static unsigned int moxaFuncTout = HZ / 2;
 static unsigned int moxaLowWaterChk;
 static DEFINE_MUTEX(moxa_openlock);
 static DEFINE_SPINLOCK(moxa_lock);
-/* Variables for insmod */
-#ifdef MODULE
+
 static unsigned long baseaddr[MAX_BOARDS];
 static unsigned int type[MAX_BOARDS];
 static unsigned int numports[MAX_BOARDS];
-#endif
 
 MODULE_AUTHOR("William Chen");
 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
 MODULE_LICENSE("GPL");
-#ifdef MODULE
+MODULE_FIRMWARE("c218tunx.cod");
+MODULE_FIRMWARE("cp204unx.cod");
+MODULE_FIRMWARE("c320tunx.cod");
+
 module_param_array(type, uint, NULL, 0);
 MODULE_PARM_DESC(type, "card type: C218=2, C320=4");
 module_param_array(baseaddr, ulong, NULL, 0);
 MODULE_PARM_DESC(baseaddr, "base address");
 module_param_array(numports, uint, NULL, 0);
 MODULE_PARM_DESC(numports, "numports (ignored for C218)");
-#endif
+
 module_param(ttymajor, int, 0);
 
 /*
@@ -1024,6 +1025,8 @@ static int __init moxa_init(void)
 {
         unsigned int isabrds = 0;
         int retval = 0;
+        struct moxa_board_conf *brd = moxa_boards;
+        unsigned int i;
 
         printk(KERN_INFO "MOXA Intellio family driver version %s\n",
                         MOXA_VERSION);
@@ -1051,10 +1054,7 @@ static int __init moxa_init(void)
         }
 
         /* Find the boards defined from module args. */
-#ifdef MODULE
-        {
-        struct moxa_board_conf *brd = moxa_boards;
-        unsigned int i;
+
         for (i = 0; i < MAX_BOARDS; i++) {
                 if (!baseaddr[i])
                         break;
@@ -1087,8 +1087,6 @@ static int __init moxa_init(void)
                         isabrds++;
                 }
         }
-        }
-#endif
 
 #ifdef CONFIG_PCI
         retval = pci_register_driver(&moxa_pci_driver);
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 3d923065d9a2..e0c5d2a69046 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -895,8 +895,7 @@ static int mxser_activate(struct tty_port *port, struct tty_struct *tty)
         if (inb(info->ioaddr + UART_LSR) == 0xff) {
                 spin_unlock_irqrestore(&info->slock, flags);
                 if (capable(CAP_SYS_ADMIN)) {
-                        if (tty)
-                                set_bit(TTY_IO_ERROR, &tty->flags);
+                        set_bit(TTY_IO_ERROR, &tty->flags);
                         return 0;
                 } else
                         return -ENODEV;
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index 2ad7d37afbd0..a3f32a15fde4 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -136,10 +136,6 @@ static int debug;
 #define RECEIVE_BUF_MAX         4
 
 
-/* Define all types of vendors and devices to support */
-#define VENDOR1         0x1931  /* Vendor Option */
-#define DEVICE1         0x000c  /* HSDPA card */
-
 #define R_IIR           0x0000  /* Interrupt Identity Register */
 #define R_FCR           0x0000  /* Flow Control Register */
 #define R_IER           0x0004  /* Interrupt Enable Register */
@@ -371,6 +367,8 @@ struct port {
         struct mutex tty_sem;
         wait_queue_head_t tty_wait;
         struct async_icount tty_icount;
+
+        struct nozomi *dc;
 };
 
 /* Private data one for each card in the system */
@@ -405,7 +403,7 @@ struct buffer {
 
 /*    Global variables */
 static const struct pci_device_id nozomi_pci_tbl[] __devinitconst = {
-        {PCI_DEVICE(VENDOR1, DEVICE1)},
+        {PCI_DEVICE(0x1931, 0x000c)},   /* Nozomi HSDPA */
         {},
 };
 
@@ -414,6 +412,8 @@ MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl);
 static struct nozomi *ndevs[NOZOMI_MAX_CARDS];
 static struct tty_driver *ntty_driver;
 
+static const struct tty_port_operations noz_tty_port_ops;
+
 /*
  * find card by tty_index
  */
@@ -853,8 +853,6 @@ static int receive_data(enum port_type index, struct nozomi *dc)
                 goto put;
         }
 
-        tty_buffer_request_room(tty, size);
-
         while (size > 0) {
                 read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX);
 
@@ -1473,9 +1471,11 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev,
 
         for (i = 0; i < MAX_PORT; i++) {
                 struct device *tty_dev;
-
-                mutex_init(&dc->port[i].tty_sem);
-                tty_port_init(&dc->port[i].port);
+                struct port *port = &dc->port[i];
+                port->dc = dc;
+                mutex_init(&port->tty_sem);
+                tty_port_init(&port->port);
+                port->port.ops = &noz_tty_port_ops;
                 tty_dev = tty_register_device(ntty_driver, dc->index_start + i,
                                                         &pdev->dev);
 
@@ -1600,67 +1600,74 @@ static void set_dtr(const struct tty_struct *tty, int dtr)
  * ----------------------------------------------------------------------------
  */
 
-/* Called when the userspace process opens the tty, /dev/noz*.  */
-static int ntty_open(struct tty_struct *tty, struct file *file)
+static int ntty_install(struct tty_driver *driver, struct tty_struct *tty)
 {
         struct port *port = get_port_by_tty(tty);
         struct nozomi *dc = get_dc_by_tty(tty);
-        unsigned long flags;
-
+        int ret;
         if (!port || !dc || dc->state != NOZOMI_STATE_READY)
                 return -ENODEV;
-
-        if (mutex_lock_interruptible(&port->tty_sem))
-                return -ERESTARTSYS;
-
-        port->port.count++;
-        dc->open_ttys++;
-
-        /* Enable interrupt downlink for channel */
-        if (port->port.count == 1) {
-                tty->driver_data = port;
-                tty_port_tty_set(&port->port, tty);
-                DBG1("open: %d", port->token_dl);
-                spin_lock_irqsave(&dc->spin_mutex, flags);
-                dc->last_ier = dc->last_ier | port->token_dl;
-                writew(dc->last_ier, dc->reg_ier);
-                spin_unlock_irqrestore(&dc->spin_mutex, flags);
+        ret = tty_init_termios(tty);
+        if (ret == 0) {
+                tty_driver_kref_get(driver);
+                driver->ttys[tty->index] = tty;
         }
-        mutex_unlock(&port->tty_sem);
-        return 0;
+        return ret;
 }
 
-/* Called when the userspace process close the tty, /dev/noz*. Also
-   called immediately if ntty_open fails in which case tty->driver_data
-   will be NULL an we exit by the first return */
+static void ntty_cleanup(struct tty_struct *tty)
+{
+        tty->driver_data = NULL;
+}
 
-static void ntty_close(struct tty_struct *tty, struct file *file)
+static int ntty_activate(struct tty_port *tport, struct tty_struct *tty)
 {
-        struct nozomi *dc = get_dc_by_tty(tty);
-        struct port *nport = tty->driver_data;
-        struct tty_port *port = &nport->port;
+        struct port *port = container_of(tport, struct port, port);
+        struct nozomi *dc = port->dc;
         unsigned long flags;
 
-        if (!dc || !nport)
-                return;
+        DBG1("open: %d", port->token_dl);
+        spin_lock_irqsave(&dc->spin_mutex, flags);
+        dc->last_ier = dc->last_ier | port->token_dl;
+        writew(dc->last_ier, dc->reg_ier);
+        dc->open_ttys++;
+        spin_unlock_irqrestore(&dc->spin_mutex, flags);
+        printk("noz: activated %d: %p\n", tty->index, tport);
+        return 0;
+}
 
-        /* Users cannot interrupt a close */
-        mutex_lock(&nport->tty_sem);
+static int ntty_open(struct tty_struct *tty, struct file *filp)
+{
+        struct port *port = get_port_by_tty(tty);
+        return tty_port_open(&port->port, tty, filp);
+}
 
-        WARN_ON(!port->count);
+static void ntty_shutdown(struct tty_port *tport)
+{
+        struct port *port = container_of(tport, struct port, port);
+        struct nozomi *dc = port->dc;
+        unsigned long flags;
 
+        DBG1("close: %d", port->token_dl);
+        spin_lock_irqsave(&dc->spin_mutex, flags);
+        dc->last_ier &= ~(port->token_dl);
+        writew(dc->last_ier, dc->reg_ier);
         dc->open_ttys--;
-        port->count--;
+        spin_unlock_irqrestore(&dc->spin_mutex, flags);
+        printk("noz: shutdown %p\n", tport);
+}
 
-        if (port->count == 0) {
-                DBG1("close: %d", nport->token_dl);
-                tty_port_tty_set(port, NULL);
-                spin_lock_irqsave(&dc->spin_mutex, flags);
-                dc->last_ier &= ~(nport->token_dl);
-                writew(dc->last_ier, dc->reg_ier);
-                spin_unlock_irqrestore(&dc->spin_mutex, flags);
-        }
-        mutex_unlock(&nport->tty_sem);
+static void ntty_close(struct tty_struct *tty, struct file *filp)
+{
+        struct port *port = tty->driver_data;
+        if (port)
+                tty_port_close(&port->port, tty, filp);
+}
+
+static void ntty_hangup(struct tty_struct *tty)
+{
+        struct port *port = tty->driver_data;
+        tty_port_hangup(&port->port);
 }
 
 /*
@@ -1680,15 +1687,7 @@ static int ntty_write(struct tty_struct *tty, const unsigned char *buffer,
         if (!dc || !port)
                 return -ENODEV;
 
-        if (unlikely(!mutex_trylock(&port->tty_sem))) {
-                /*
-                 * must test lock as tty layer wraps calls
-                 * to this function with BKL
-                 */
-                dev_err(&dc->pdev->dev, "Would have deadlocked - "
-                        "return EAGAIN\n");
-                return -EAGAIN;
-        }
+        mutex_lock(&port->tty_sem);
 
         if (unlikely(!port->port.count)) {
                 DBG1(" ");
@@ -1728,25 +1727,23 @@ exit:
  * This method is called by the upper tty layer.
  *   #according to sources N_TTY.c it expects a value >= 0 and
  *    does not check for negative values.
+ *
+ * If the port is unplugged report lots of room and let the bits
+ * dribble away so we don't block anything.
  */
 static int ntty_write_room(struct tty_struct *tty)
 {
         struct port *port = tty->driver_data;
-        int room = 0;
+        int room = 4096;
         const struct nozomi *dc = get_dc_by_tty(tty);
 
-        if (!dc || !port)
-                return 0;
-        if (!mutex_trylock(&port->tty_sem))
-                return 0;
-
-        if (!port->port.count)
-                goto exit;
-
-        room = port->fifo_ul.size - kfifo_len(&port->fifo_ul);
-
-exit:
-        mutex_unlock(&port->tty_sem);
+        if (dc) {
+                mutex_lock(&port->tty_sem);
+                if (port->port.count)
+                        room = port->fifo_ul.size -
+                                        kfifo_len(&port->fifo_ul);
+                mutex_unlock(&port->tty_sem);
+        }
         return room;
 }
 
@@ -1906,10 +1903,16 @@ exit_in_buffer:
         return rval;
 }
 
+static const struct tty_port_operations noz_tty_port_ops = {
+        .activate = ntty_activate,
+        .shutdown = ntty_shutdown,
+};
+
 static const struct tty_operations tty_ops = {
         .ioctl = ntty_ioctl,
         .open = ntty_open,
         .close = ntty_close,
+        .hangup = ntty_hangup,
         .write = ntty_write,
         .write_room = ntty_write_room,
         .unthrottle = ntty_unthrottle,
@@ -1917,6 +1920,8 @@ static const struct tty_operations tty_ops = {
         .chars_in_buffer = ntty_chars_in_buffer,
         .tiocmget = ntty_tiocmget,
         .tiocmset = ntty_tiocmset,
+        .install = ntty_install,
+        .cleanup = ntty_cleanup,
 };
 
 /* Module initialization */
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 452370af95de..986aa606a6b6 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -658,8 +658,7 @@ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
                         info->mon.char_max = char_count;
                 info->mon.char_last = char_count;
 #endif
-                len = tty_buffer_request_room(tty, char_count);
-                while (len--) {
+                while (char_count--) {
                         data = base_addr[CyRDR];
                         tty_insert_flip_char(tty, data, TTY_NORMAL);
 #ifdef CYCLOM_16Y_HACK
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 268e17f9ec3f..07ac14d949ce 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -646,8 +646,6 @@ static void sx_receive(struct specialix_board *bp)
         dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
         port->hits[count > 8 ? 9 : count]++;
 
-        tty_buffer_request_room(tty, count);
-
         while (count--)
                 tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
         tty_flip_buffer_push(tty);
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 4846b73ef28d..0658fc548222 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -2031,7 +2031,7 @@ static int mgsl_put_char(struct tty_struct *tty, unsigned char ch)
         if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char"))
                 return 0;
 
-        if (!tty || !info->xmit_buf)
+        if (!info->xmit_buf)
                 return 0;
 
         spin_lock_irqsave(&info->irq_spinlock, flags);
@@ -2121,7 +2121,7 @@ static int mgsl_write(struct tty_struct * tty,
         if (mgsl_paranoia_check(info, tty->name, "mgsl_write"))
                 goto cleanup;
 
-        if (!tty || !info->xmit_buf)
+        if (!info->xmit_buf)
                 goto cleanup;
 
         if ( info->params.mode == MGSL_MODE_HDLC ||
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 8678f0c8699d..4561ce2fba6d 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -468,7 +468,7 @@ static unsigned int free_tbuf_count(struct slgt_info *info);
 static unsigned int tbuf_bytes(struct slgt_info *info);
 static void reset_tbufs(struct slgt_info *info);
 static void tdma_reset(struct slgt_info *info);
-static void tx_load(struct slgt_info *info, const char *buf, unsigned int count);
+static bool tx_load(struct slgt_info *info, const char *buf, unsigned int count);
 
 static void get_signals(struct slgt_info *info);
 static void set_signals(struct slgt_info *info);
@@ -813,59 +813,32 @@ static int write(struct tty_struct *tty,
         int ret = 0;
         struct slgt_info *info = tty->driver_data;
         unsigned long flags;
-        unsigned int bufs_needed;
 
         if (sanity_check(info, tty->name, "write"))
-                goto cleanup;
+                return -EIO;
+
         DBGINFO(("%s write count=%d\n", info->device_name, count));
 
-        if (!info->tx_buf)
-                goto cleanup;
+        if (!info->tx_buf || (count > info->max_frame_size))
+                return -EIO;
 
-        if (count > info->max_frame_size) {
-                ret = -EIO;
-                goto cleanup;
-        }
+        if (!count || tty->stopped || tty->hw_stopped)
+                return 0;
 
-        if (!count)
-                goto cleanup;
+        spin_lock_irqsave(&info->lock, flags);
 
-        if (!info->tx_active && info->tx_count) {
+        if (info->tx_count) {
                 /* send accumulated data from send_char() */
-                tx_load(info, info->tx_buf, info->tx_count);
-                goto start;
+                if (!tx_load(info, info->tx_buf, info->tx_count))
+                        goto cleanup;
+                info->tx_count = 0;
         }
-        bufs_needed = (count/DMABUFSIZE);
-        if (count % DMABUFSIZE)
-                ++bufs_needed;
-        if (bufs_needed > free_tbuf_count(info))
-                goto cleanup;
 
-        ret = info->tx_count = count;
-        tx_load(info, buf, count);
-        goto start;
-
-start:
-        if (info->tx_count && !tty->stopped && !tty->hw_stopped) {
-                spin_lock_irqsave(&info->lock,flags);
-                if (!info->tx_active)
-                        tx_start(info);
-                else if (!(rd_reg32(info, TDCSR) & BIT0)) {
-                        /* transmit still active but transmit DMA stopped */
-                        unsigned int i = info->tbuf_current;
-                        if (!i)
-                                i = info->tbuf_count;
-                        i--;
-                        /* if DMA buf unsent must try later after tx idle */
-                        if (desc_count(info->tbufs[i]))
-                                ret = 0;
-                }
-                if (ret > 0)
-                        update_tx_timer(info);
-                spin_unlock_irqrestore(&info->lock,flags);
-        }
+        if (tx_load(info, buf, count))
+                ret = count;
 
 cleanup:
+        spin_unlock_irqrestore(&info->lock, flags);
         DBGINFO(("%s write rc=%d\n", info->device_name, ret));
         return ret;
 }
@@ -882,7 +855,7 @@ static int put_char(struct tty_struct *tty, unsigned char ch)
         if (!info->tx_buf)
                 return 0;
         spin_lock_irqsave(&info->lock,flags);
-        if (!info->tx_active && (info->tx_count < info->max_frame_size)) {
+        if (info->tx_count < info->max_frame_size) {
                 info->tx_buf[info->tx_count++] = ch;
                 ret = 1;
         }
@@ -981,10 +954,8 @@ static void flush_chars(struct tty_struct *tty)
         DBGINFO(("%s flush_chars start transmit\n", info->device_name));
 
         spin_lock_irqsave(&info->lock,flags);
-        if (!info->tx_active && info->tx_count) {
-                tx_load(info, info->tx_buf,info->tx_count);
-                tx_start(info);
-        }
+        if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
+                info->tx_count = 0;
         spin_unlock_irqrestore(&info->lock,flags);
 }
 
@@ -997,10 +968,9 @@ static void flush_buffer(struct tty_struct *tty)
                 return;
         DBGINFO(("%s flush_buffer\n", info->device_name));
 
-        spin_lock_irqsave(&info->lock,flags);
-        if (!info->tx_active)
-                info->tx_count = 0;
-        spin_unlock_irqrestore(&info->lock,flags);
+        spin_lock_irqsave(&info->lock, flags);
+        info->tx_count = 0;
+        spin_unlock_irqrestore(&info->lock, flags);
 
         tty_wakeup(tty);
 }
@@ -1033,12 +1003,10 @@ static void tx_release(struct tty_struct *tty)
         if (sanity_check(info, tty->name, "tx_release"))
                 return;
         DBGINFO(("%s tx_release\n", info->device_name));
-        spin_lock_irqsave(&info->lock,flags);
-        if (!info->tx_active && info->tx_count) {
-                tx_load(info, info->tx_buf, info->tx_count);
-                tx_start(info);
-        }
-        spin_unlock_irqrestore(&info->lock,flags);
+        spin_lock_irqsave(&info->lock, flags);
+        if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count))
+                info->tx_count = 0;
+        spin_unlock_irqrestore(&info->lock, flags);
 }
 
 /*
@@ -1506,27 +1474,25 @@ static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
 
         DBGINFO(("%s hdlc_xmit\n", dev->name));
 
+        if (!skb->len)
+                return NETDEV_TX_OK;
+
         /* stop sending until this frame completes */
         netif_stop_queue(dev);
 
-        /* copy data to device buffers */
-        info->tx_count = skb->len;
-        tx_load(info, skb->data, skb->len);
-
         /* update network statistics */
         dev->stats.tx_packets++;
         dev->stats.tx_bytes += skb->len;
 
-        /* done with socket buffer, so free it */
-        dev_kfree_skb(skb);
-
         /* save start time for transmit timeout detection */
         dev->trans_start = jiffies;
 
-        spin_lock_irqsave(&info->lock,flags);
-        tx_start(info);
-        update_tx_timer(info);
-        spin_unlock_irqrestore(&info->lock,flags);
+        spin_lock_irqsave(&info->lock, flags);
+        tx_load(info, skb->data, skb->len);
+        spin_unlock_irqrestore(&info->lock, flags);
+
+        /* done with socket buffer, so free it */
+        dev_kfree_skb(skb);
 
         return NETDEV_TX_OK;
 }
@@ -2180,7 +2146,7 @@ static void isr_serial(struct slgt_info *info)
 
         if (info->params.mode == MGSL_MODE_ASYNC) {
                 if (status & IRQ_TXIDLE) {
-                        if (info->tx_count)
+                        if (info->tx_active)
                                 isr_txeom(info, status);
                 }
                 if (info->rx_pio && (status & IRQ_RXDATA))
@@ -2276,13 +2242,42 @@ static void isr_tdma(struct slgt_info *info)
         }
 }
 
+/*
+ * return true if there are unsent tx DMA buffers, otherwise false
+ *
+ * if there are unsent buffers then info->tbuf_start
+ * is set to index of first unsent buffer
+ */
+static bool unsent_tbufs(struct slgt_info *info)
+{
+        unsigned int i = info->tbuf_current;
+        bool rc = false;
+
+        /*
+         * search backwards from last loaded buffer (precedes tbuf_current)
+         * for first unsent buffer (desc_count > 0)
+         */
+
+        do {
+                if (i)
+                        i--;
+                else
+                        i = info->tbuf_count - 1;
+                if (!desc_count(info->tbufs[i]))
+                        break;
+                info->tbuf_start = i;
+                rc = true;
+        } while (i != info->tbuf_current);
+
+        return rc;
+}
+
 static void isr_txeom(struct slgt_info *info, unsigned short status)
 {
         DBGISR(("%s txeom status=%04x\n", info->device_name, status));
 
         slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER);
         tdma_reset(info);
-        reset_tbufs(info);
         if (status & IRQ_TXUNDER) {
                 unsigned short val = rd_reg16(info, TCR);
                 wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */
@@ -2297,8 +2292,12 @@ static void isr_txeom(struct slgt_info *info, unsigned short status)
                                 info->icount.txok++;
                 }
 
+                if (unsent_tbufs(info)) {
+                        tx_start(info);
+                        update_tx_timer(info);
+                        return;
+                }
                 info->tx_active = false;
-                info->tx_count = 0;
 
                 del_timer(&info->tx_timer);
 
@@ -3949,7 +3948,7 @@ static void tx_start(struct slgt_info *info)
                 info->tx_enabled = true;
         }
 
-        if (info->tx_count) {
+        if (desc_count(info->tbufs[info->tbuf_start])) {
                 info->drop_rts_on_tx_done = false;
 
                 if (info->params.mode != MGSL_MODE_ASYNC) {
@@ -4772,25 +4771,36 @@ static unsigned int tbuf_bytes(struct slgt_info *info)
 }
 
 /*
- * load transmit DMA buffer(s) with data
+ * load data into transmit DMA buffer ring and start transmitter if needed
+ * return true if data accepted, otherwise false (buffers full)
  */
-static void tx_load(struct slgt_info *info, const char *buf, unsigned int size)
+static bool tx_load(struct slgt_info *info, const char *buf, unsigned int size)
 {
         unsigned short count;
         unsigned int i;
         struct slgt_desc *d;
 
-        if (size == 0)
-                return;
+        /* check required buffer space */
+        if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info))
+                return false;
 
         DBGDATA(info, buf, size, "tx");
 
+        /*
+         * copy data to one or more DMA buffers in circular ring
+         * tbuf_start   = first buffer for this data
+         * tbuf_current = next free buffer
+         *
+         * Copy all data before making data visible to DMA controller by
+         * setting descriptor count of the first buffer.
+         * This prevents an active DMA controller from reading the first DMA
+         * buffers of a frame and stopping before the final buffers are filled.
+         */
+
         info->tbuf_start = i = info->tbuf_current;
 
         while (size) {
                 d = &info->tbufs[i];
-                if (++i == info->tbuf_count)
-                        i = 0;
 
                 count = (unsigned short)((size > DMABUFSIZE) ? DMABUFSIZE : size);
                 memcpy(d->buf, buf, count);
@@ -4808,11 +4818,27 @@ static void tx_load(struct slgt_info *info, const char *buf, unsigned int size)
                 else
                         set_desc_eof(*d, 0);
 
-                set_desc_count(*d, count);
+                /* set descriptor count for all but first buffer */
+                if (i != info->tbuf_start)
+                        set_desc_count(*d, count);
                 d->buf_count = count;
+
+                if (++i == info->tbuf_count)
+                        i = 0;
         }
 
         info->tbuf_current = i;
+
+        /* set first buffer count to make new data visible to DMA controller */
+        d = &info->tbufs[info->tbuf_start];
+        set_desc_count(*d, d->buf_count);
+
+        /* start transmitter if needed and update transmit timeout */
+        if (!info->tx_active)
+                tx_start(info);
+        update_tx_timer(info);
+
+        return true;
 }
 
 static int register_test(struct slgt_info *info)
@@ -4934,9 +4960,7 @@ static int loopback_test(struct slgt_info *info)
         spin_lock_irqsave(&info->lock,flags);
         async_mode(info);
         rx_start(info);
-        info->tx_count = count;
         tx_load(info, buf, count);
-        tx_start(info);
         spin_unlock_irqrestore(&info->lock, flags);
 
         /* wait for receive complete */
diff --git a/drivers/char/tty_buffer.c b/drivers/char/tty_buffer.c
index 66fa4e10d76b..f27c4d6d956e 100644
--- a/drivers/char/tty_buffer.c
+++ b/drivers/char/tty_buffer.c
@@ -247,7 +247,8 @@ int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars,
 {
         int copied = 0;
         do {
-                int space = tty_buffer_request_room(tty, size - copied);
+                int goal = min(size - copied, TTY_BUFFER_PAGE);
+                int space = tty_buffer_request_room(tty, goal);
                 struct tty_buffer *tb = tty->buf.tail;
                 /* If there is no space then tb may be NULL */
                 if (unlikely(space == 0))
@@ -283,7 +284,8 @@ int tty_insert_flip_string_flags(struct tty_struct *tty,
 {
         int copied = 0;
         do {
-                int space = tty_buffer_request_room(tty, size - copied);
+                int goal = min(size - copied, TTY_BUFFER_PAGE);
+                int space = tty_buffer_request_room(tty, goal);
                 struct tty_buffer *tb = tty->buf.tail;
                 /* If there is no space then tb may be NULL */
                 if (unlikely(space == 0))
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index 3f653f7d849f..500e740ec5e4 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -706,12 +706,13 @@ static void tty_reset_termios(struct tty_struct *tty)
 /**
  *      tty_ldisc_reinit        -       reinitialise the tty ldisc
  *      @tty: tty to reinit
+ *      @ldisc: line discipline to reinitialize
  *
- *      Switch the tty back to N_TTY line discipline and leave the
- *      ldisc state closed
+ *      Switch the tty to a line discipline and leave the ldisc
+ *      state closed
  */
 
-static void tty_ldisc_reinit(struct tty_struct *tty)
+static void tty_ldisc_reinit(struct tty_struct *tty, int ldisc)
 {
         struct tty_ldisc *ld;
 
@@ -721,10 +722,10 @@ static void tty_ldisc_reinit(struct tty_struct *tty)
         /*
          *      Switch the line discipline back
          */
-        ld = tty_ldisc_get(N_TTY);
+        ld = tty_ldisc_get(ldisc);
         BUG_ON(IS_ERR(ld));
         tty_ldisc_assign(tty, ld);
-        tty_set_termios_ldisc(tty, N_TTY);
+        tty_set_termios_ldisc(tty, ldisc);
 }
 
 /**
@@ -745,6 +746,8 @@ static void tty_ldisc_reinit(struct tty_struct *tty)
 void tty_ldisc_hangup(struct tty_struct *tty)
 {
         struct tty_ldisc *ld;
+        int reset = tty->driver->flags & TTY_DRIVER_RESET_TERMIOS;
+        int err = 0;
 
         /*
          * FIXME! What are the locking issues here? This may me overdoing
@@ -772,25 +775,32 @@ void tty_ldisc_hangup(struct tty_struct *tty)
         wake_up_interruptible_poll(&tty->read_wait, POLLIN);
         /*
          * Shutdown the current line discipline, and reset it to
-         * N_TTY.
+         * N_TTY if need be.
+         *
+         * Avoid racing set_ldisc or tty_ldisc_release
          */
-        if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
-                /* Avoid racing set_ldisc or tty_ldisc_release */
-                mutex_lock(&tty->ldisc_mutex);
-                tty_ldisc_halt(tty);
-                if (tty->ldisc) {       /* Not yet closed */
-                        /* Switch back to N_TTY */
-                        tty_ldisc_reinit(tty);
-                        /* At this point we have a closed ldisc and we want to
-                           reopen it. We could defer this to the next open but
-                           it means auditing a lot of other paths so this is
-                           a FIXME */
+        mutex_lock(&tty->ldisc_mutex);
+        tty_ldisc_halt(tty);
+        /* At this point we have a closed ldisc and we want to
+           reopen it. We could defer this to the next open but
+           it means auditing a lot of other paths so this is
+           a FIXME */
+        if (tty->ldisc) {       /* Not yet closed */
+                if (reset == 0) {
+                        tty_ldisc_reinit(tty, tty->termios->c_line);
+                        err = tty_ldisc_open(tty, tty->ldisc);
+                }
+                /* If the re-open fails or we reset then go to N_TTY. The
+                   N_TTY open cannot fail */
+                if (reset || err) {
+                        tty_ldisc_reinit(tty, N_TTY);
                         WARN_ON(tty_ldisc_open(tty, tty->ldisc));
-                        tty_ldisc_enable(tty);
                 }
-                mutex_unlock(&tty->ldisc_mutex);
-                tty_reset_termios(tty);
+                tty_ldisc_enable(tty);
         }
+        mutex_unlock(&tty->ldisc_mutex);
+        if (reset)
+                tty_reset_termios(tty);
 }
 
 /**
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 6aa10284104a..87778dcf8727 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -888,7 +888,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
                         ret = -EFAULT;
                         goto out;
                 }
-                if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) {
+                if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS && tmp.mode != VT_PROCESS_AUTO) {
                         ret = -EINVAL;
                         goto out;
                 }
@@ -1622,7 +1622,7 @@ static void complete_change_console(struct vc_data *vc)
          * telling it that it has acquired. Also check if it has died and
          * clean up (similar to logic employed in change_console())
          */
-        if (vc->vt_mode.mode == VT_PROCESS) {
+        if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
                 /*
                  * Send the signal as privileged - kill_pid() will
                  * tell us if the process has gone or something else
@@ -1682,7 +1682,7 @@ void change_console(struct vc_data *new_vc)
          * vt to auto control.
          */
         vc = vc_cons[fg_console].d;
-        if (vc->vt_mode.mode == VT_PROCESS) {
+        if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) {
                 /*
                  * Send the signal as privileged - kill_pid() will
                  * tell us if the process has gone or something else
@@ -1693,27 +1693,28 @@ void change_console(struct vc_data *new_vc)
                  */
                 vc->vt_newvt = new_vc->vc_num;
                 if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) {
+                        if(vc->vt_mode.mode == VT_PROCESS)
+                                /*
+                                 * It worked. Mark the vt to switch to and
+                                 * return. The process needs to send us a
+                                 * VT_RELDISP ioctl to complete the switch.
+                                 */
+                                return;
+                } else {
                         /*
-                         * It worked. Mark the vt to switch to and
-                         * return. The process needs to send us a
-                         * VT_RELDISP ioctl to complete the switch.
+                         * The controlling process has died, so we revert back to
+                         * normal operation. In this case, we'll also change back
+                         * to KD_TEXT mode. I'm not sure if this is strictly correct
+                         * but it saves the agony when the X server dies and the screen
+                         * remains blanked due to KD_GRAPHICS! It would be nice to do
+                         * this outside of VT_PROCESS but there is no single process
+                         * to account for and tracking tty count may be undesirable.
                          */
-                        return;
+                        reset_vc(vc);
                 }
 
                 /*
-                 * The controlling process has died, so we revert back to
-                 * normal operation. In this case, we'll also change back
-                 * to KD_TEXT mode. I'm not sure if this is strictly correct
-                 * but it saves the agony when the X server dies and the screen
-                 * remains blanked due to KD_GRAPHICS! It would be nice to do
-                 * this outside of VT_PROCESS but there is no single process
-                 * to account for and tracking tty count may be undesirable.
-                 */
-                reset_vc(vc);
-
-                /*
-                 * Fall through to normal (VT_AUTO) handling of the switch...
+                 * Fall through to normal (VT_AUTO and VT_PROCESS_AUTO) handling of the switch...
                  */
         }