Merge tag 'tty-3.3-rc3' tty-next

This is needed to handle the 8250 file merge mess properly for future
patches.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/tty/serial/efm32-uart.txt

@@ -0,0 +1,14 @@
+* Energymicro efm32 UART
+
+Required properties:
+- compatible : Should be "efm32,uart"
+- reg : Address and length of the register set
+- interrupts : Should contain uart interrupt
+
+Example:
+
+uart@0x4000c400 {
+	compatible = "efm32,uart";
+	reg = <0x4000c400 0x400>;
+	interrupts = <15>;
+};

drivers/isdn/capi/capi.c

@@ -1015,14 +1015,11 @@ capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty)
 {
 	int idx = tty->index;
 	struct capiminor *mp = capiminor_get(idx);
-	int ret = tty_init_termios(tty);
+	int ret = tty_standard_install(driver, tty);
 
-	if (ret == 0) {
-		tty_driver_kref_get(driver);
-		tty->count++;
+	if (ret == 0)
 		tty->driver_data = mp;
-		driver->ttys[idx] = tty;
-	} else
+	else
 		capiminor_put(mp);
 	return ret;
 }

drivers/misc/pti.c

@@ -481,13 +481,9 @@ static int pti_tty_install(struct tty_driver *driver, struct tty_struct *tty)
 {
 	int idx = tty->index;
 	struct pti_tty *pti_tty_data;
-	int ret = tty_init_termios(tty);
+	int ret = tty_standard_install(driver, tty);
 
 	if (ret == 0) {
-		tty_driver_kref_get(driver);
-		tty->count++;
-		driver->ttys[idx] = tty;
-
 		pti_tty_data = kmalloc(sizeof(struct pti_tty), GFP_KERNEL);
 		if (pti_tty_data == NULL)
 			return -ENOMEM;

drivers/mmc/card/sdio_uart.c

@@ -750,15 +750,12 @@ static int sdio_uart_install(struct tty_driver *driver, struct tty_struct *tty)
 {
 	int idx = tty->index;
 	struct sdio_uart_port *port = sdio_uart_port_get(idx);
-	int ret = tty_init_termios(tty);
+	int ret = tty_standard_install(driver, tty);
 
-	if (ret == 0) {
-		tty_driver_kref_get(driver);
-		tty->count++;
+	if (ret == 0)
 		/* This is the ref sdio_uart_port get provided */
 		tty->driver_data = port;
-		driver->ttys[idx] = tty;
-	} else
+	else
 		sdio_uart_port_put(port);
 	return ret;
 }

drivers/tty/hvc/hvc_beat.c

@@ -113,7 +113,7 @@ static int __init hvc_beat_init(void)
 	if (!firmware_has_feature(FW_FEATURE_BEAT))
 		return -ENODEV;
 
-	hp = hvc_alloc(0, NO_IRQ, &hvc_beat_get_put_ops, 16);
+	hp = hvc_alloc(0, 0, &hvc_beat_get_put_ops, 16);
 	if (IS_ERR(hp))
 		return PTR_ERR(hp);
 	hvc_beat_dev = hp;

drivers/tty/hvc/hvc_rtas.c

@@ -94,7 +94,7 @@ static int __init hvc_rtas_init(void)
 
 	/* Allocate an hvc_struct for the console device we instantiated
 	 * earlier.  Save off hp so that we can return it on exit */
-	hp = hvc_alloc(hvc_rtas_cookie, NO_IRQ, &hvc_rtas_get_put_ops, 16);
+	hp = hvc_alloc(hvc_rtas_cookie, 0, &hvc_rtas_get_put_ops, 16);
 	if (IS_ERR(hp))
 		return PTR_ERR(hp);
 

drivers/tty/hvc/hvc_udbg.c

@@ -69,7 +69,7 @@ static int __init hvc_udbg_init(void)
 
 	BUG_ON(hvc_udbg_dev);
 
-	hp = hvc_alloc(0, NO_IRQ, &hvc_udbg_ops, 16);
+	hp = hvc_alloc(0, 0, &hvc_udbg_ops, 16);
 	if (IS_ERR(hp))
 		return PTR_ERR(hp);
 

drivers/tty/hvc/hvc_xen.c

@@ -176,7 +176,7 @@ static int __init xen_hvc_init(void)
 		xencons_irq = bind_evtchn_to_irq(xen_start_info->console.domU.evtchn);
 	}
 	if (xencons_irq < 0)
-		xencons_irq = 0; /* NO_IRQ */
+		xencons_irq = 0;
 	else
 		irq_set_noprobe(xencons_irq);
 

drivers/tty/hvc/hvcs.c

@@ -1203,7 +1203,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
 {
 	struct hvcs_struct *hvcsd;
 	unsigned long flags;
-	int irq = NO_IRQ;
+	int irq;
 
 	/*
 	 * Is someone trying to close the file associated with this device after
@@ -1264,7 +1264,7 @@ static void hvcs_hangup(struct tty_struct * tty)
 	struct hvcs_struct *hvcsd = tty->driver_data;
 	unsigned long flags;
 	int temp_open_count;
-	int irq = NO_IRQ;
+	int irq;
 
 	spin_lock_irqsave(&hvcsd->lock, flags);
 	/* Preserve this so that we know how many kref refs to put */

drivers/tty/hvc/hvsi.c

@@ -1237,7 +1237,7 @@ static int __init hvsi_console_init(void)
 		hp->state = HVSI_CLOSED;
 		hp->vtermno = *vtermno;
 		hp->virq = irq_create_mapping(NULL, irq[0]);
-		if (hp->virq == NO_IRQ) {
+		if (hp->virq == 0) {
 			printk(KERN_ERR "%s: couldn't create irq mapping for 0x%x\n",
 				__func__, irq[0]);
 			continue;

drivers/tty/nozomi.c

@@ -1602,13 +1602,9 @@ static int ntty_install(struct tty_driver *driver, struct tty_struct *tty)
 	int ret;
 	if (!port || !dc || dc->state != NOZOMI_STATE_READY)
 		return -ENODEV;
-	ret = tty_init_termios(tty);
-	if (ret == 0) {
-		tty_driver_kref_get(driver);
-		tty->count++;
+	ret = tty_standard_install(driver, tty);
+	if (ret == 0)
 		tty->driver_data = port;
-		driver->ttys[tty->index] = tty;
-	}
 	return ret;
 }
 

drivers/tty/pty.c

@@ -21,7 +21,6 @@
 #include <linux/major.h>
 #include <linux/mm.h>
 #include <linux/init.h>
-#include <linux/sysctl.h>
 #include <linux/device.h>
 #include <linux/uaccess.h>
 #include <linux/bitops.h>
@@ -55,11 +54,8 @@ static void pty_close(struct tty_struct *tty, struct file *filp)
 	wake_up_interruptible(&tty->link->write_wait);
 	if (tty->driver->subtype == PTY_TYPE_MASTER) {
 		set_bit(TTY_OTHER_CLOSED, &tty->flags);
-#ifdef CONFIG_UNIX98_PTYS
-		if (tty->driver == ptm_driver)
-			devpts_pty_kill(tty->link);
-#endif
 		tty_unlock();
+		devpts_pty_kill(tty->link);
 		tty_vhangup(tty->link);
 		tty_lock();
 	}
@@ -439,55 +435,9 @@ static inline void legacy_pty_init(void) { }
 
 /* Unix98 devices */
 #ifdef CONFIG_UNIX98_PTYS
-/*
- * sysctl support for setting limits on the number of Unix98 ptys allocated.
- * Otherwise one can eat up all kernel memory by opening /dev/ptmx repeatedly.
- */
-int pty_limit = NR_UNIX98_PTY_DEFAULT;
-static int pty_limit_min;
-static int pty_limit_max = NR_UNIX98_PTY_MAX;
-static int pty_count;
 
 static struct cdev ptmx_cdev;
 
-static struct ctl_table pty_table[] = {
-	{
-		.procname	= "max",
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.data		= &pty_limit,
-		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &pty_limit_min,
-		.extra2		= &pty_limit_max,
-	}, {
-		.procname	= "nr",
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.data		= &pty_count,
-		.proc_handler	= proc_dointvec,
-	}, 
-	{}
-};
-
-static struct ctl_table pty_kern_table[] = {
-	{
-		.procname	= "pty",
-		.mode		= 0555,
-		.child		= pty_table,
-	},
-	{}
-};
-
-static struct ctl_table pty_root_table[] = {
-	{
-		.procname	= "kernel",
-		.mode		= 0555,
-		.child		= pty_kern_table,
-	},
-	{}
-};
-
-
 static int pty_unix98_ioctl(struct tty_struct *tty,
 			    unsigned int cmd, unsigned long arg)
 {
@@ -515,10 +465,8 @@ static int pty_unix98_ioctl(struct tty_struct *tty,
 static struct tty_struct *ptm_unix98_lookup(struct tty_driver *driver,
 		struct inode *ptm_inode, int idx)
 {
-	struct tty_struct *tty = devpts_get_tty(ptm_inode, idx);
-	if (tty)
-		tty = tty->link;
-	return tty;
+	/* Master must be open via /dev/ptmx */
+	return ERR_PTR(-EIO);
 }
 
 /**
@@ -589,7 +537,6 @@ static int pty_unix98_install(struct tty_driver *driver, struct tty_struct *tty)
 	 */
 	tty_driver_kref_get(driver);
 	tty->count++;
-	pty_count++;
 	return 0;
 err_free_mem:
 	deinitialize_tty_struct(o_tty);
@@ -603,7 +550,6 @@ err_free_tty:
 
 static void ptm_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
 {
-	pty_count--;
 }
 
 static void pts_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
@@ -667,9 +613,7 @@ static int ptmx_open(struct inode *inode, struct file *filp)
 		return retval;
 
 	/* find a device that is not in use. */
-	tty_lock();
 	index = devpts_new_index(inode);
-	tty_unlock();
 	if (index < 0) {
 		retval = index;
 		goto err_file;
@@ -677,7 +621,7 @@ static int ptmx_open(struct inode *inode, struct file *filp)
 
 	mutex_lock(&tty_mutex);
 	tty_lock();
-	tty = tty_init_dev(ptm_driver, index, 1);
+	tty = tty_init_dev(ptm_driver, index);
 	mutex_unlock(&tty_mutex);
 
 	if (IS_ERR(tty)) {
@@ -704,8 +648,8 @@ err_release:
 	tty_release(inode, filp);
 	return retval;
 out:
-	devpts_kill_index(inode, index);
 	tty_unlock();
+	devpts_kill_index(inode, index);
 err_file:
 	tty_free_file(filp);
 	return retval;
@@ -762,8 +706,6 @@ static void __init unix98_pty_init(void)
 	if (tty_register_driver(pts_driver))
 		panic("Couldn't register Unix98 pts driver");
 
-	register_sysctl_table(pty_root_table);
-
 	/* Now create the /dev/ptmx special device */
 	tty_default_fops(&ptmx_fops);
 	ptmx_fops.open = ptmx_open;

drivers/tty/serial/21285.c

@@ -331,7 +331,7 @@ static int serial21285_verify_port(struct uart_port *port, struct serial_struct
 	int ret = 0;
 	if (ser->type != PORT_UNKNOWN && ser->type != PORT_21285)
 		ret = -EINVAL;
-	if (ser->irq != NO_IRQ)
+	if (ser->irq <= 0)
 		ret = -EINVAL;
 	if (ser->baud_base != port->uartclk / 16)
 		ret = -EINVAL;
@@ -360,7 +360,7 @@ static struct uart_ops serial21285_ops = {
 static struct uart_port serial21285_port = {
 	.mapbase	= 0x42000160,
 	.iotype		= UPIO_MEM,
-	.irq		= NO_IRQ,
+	.irq		= 0,
 	.fifosize	= 16,
 	.ops		= &serial21285_ops,
 	.flags		= UPF_BOOT_AUTOCONF,

drivers/tty/serial/8250/8250.c

@@ -86,13 +86,6 @@ static unsigned int skip_txen_test; /* force skip of txen test at init time */
 #define BOTH_EMPTY 	(UART_LSR_TEMT | UART_LSR_THRE)
 
 
-/*
- * We default to IRQ0 for the "no irq" hack.   Some
- * machine types want others as well - they're free
- * to redefine this in their header file.
- */
-#define is_real_interrupt(irq)	((irq) != 0)
-
 #ifdef CONFIG_SERIAL_8250_DETECT_IRQ
 #define CONFIG_SERIAL_DETECT_IRQ 1
 #endif
@@ -1750,7 +1743,7 @@ static void serial8250_backup_timeout(unsigned long data)
 	 * Must disable interrupts or else we risk racing with the interrupt
 	 * based handler.
 	 */
-	if (is_real_interrupt(up->port.irq)) {
+	if (up->port.irq) {
 		ier = serial_in(up, UART_IER);
 		serial_out(up, UART_IER, 0);
 	}
@@ -1775,7 +1768,7 @@ static void serial8250_backup_timeout(unsigned long data)
 	if (!(iir & UART_IIR_NO_INT))
 		serial8250_tx_chars(up);
 
-	if (is_real_interrupt(up->port.irq))
+	if (up->port.irq)
 		serial_out(up, UART_IER, ier);
 
 	spin_unlock_irqrestore(&up->port.lock, flags);
@@ -2028,7 +2021,7 @@ static int serial8250_startup(struct uart_port *port)
 		serial_outp(up, UART_LCR, 0);
 	}
 
-	if (is_real_interrupt(up->port.irq)) {
+	if (up->port.irq) {
 		unsigned char iir1;
 		/*
 		 * Test for UARTs that do not reassert THRE when the
@@ -2083,7 +2076,7 @@ static int serial8250_startup(struct uart_port *port)
 	 * hardware interrupt, we use a timer-based system.  The original
 	 * driver used to do this with IRQ0.
 	 */
-	if (!is_real_interrupt(up->port.irq)) {
+	if (!up->port.irq) {
 		up->timer.data = (unsigned long)up;
 		mod_timer(&up->timer, jiffies + uart_poll_timeout(port));
 	} else {
@@ -2099,13 +2092,13 @@ static int serial8250_startup(struct uart_port *port)
 
 	spin_lock_irqsave(&up->port.lock, flags);
 	if (up->port.flags & UPF_FOURPORT) {
-		if (!is_real_interrupt(up->port.irq))
+		if (!up->port.irq)
 			up->port.mctrl |= TIOCM_OUT1;
 	} else
 		/*
 		 * Most PC uarts need OUT2 raised to enable interrupts.
 		 */
-		if (is_real_interrupt(up->port.irq))
+		if (up->port.irq)
 			up->port.mctrl |= TIOCM_OUT2;
 
 	serial8250_set_mctrl(&up->port, up->port.mctrl);
@@ -2223,7 +2216,7 @@ static void serial8250_shutdown(struct uart_port *port)
 
 	del_timer_sync(&up->timer);
 	up->timer.function = serial8250_timeout;
-	if (is_real_interrupt(up->port.irq))
+	if (up->port.irq)
 		serial_unlink_irq_chain(up);
 }
 

drivers/tty/serial/Kconfig

@@ -1347,4 +1347,17 @@ config SERIAL_AR933X_NR_UARTS
 	  Set this to the number of serial ports you want the driver
 	  to support.
 
+config SERIAL_EFM32_UART
+	tristate "EFM32 UART/USART port."
+	depends on ARCH_EFM32
+	select SERIAL_CORE
+	help
+	  This driver support the USART and UART ports on
+	  Energy Micro's efm32 SoCs.
+
+config SERIAL_EFM32_UART_CONSOLE
+	bool "EFM32 UART/USART console support"
+	depends on SERIAL_EFM32_UART=y
+	select SERIAL_CORE_CONSOLE
+
 endmenu

drivers/tty/serial/Makefile

@@ -61,12 +61,12 @@ obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o
 obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o
 obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
 obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
+obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
 obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
 obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
 obj-$(CONFIG_SERIAL_TIMBERDALE)	+= timbuart.o
 obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o
 obj-$(CONFIG_SERIAL_ALTERA_JTAGUART) += altera_jtaguart.o
-obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
 obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o
 obj-$(CONFIG_SERIAL_MRST_MAX3110)	+= mrst_max3110.o
 obj-$(CONFIG_SERIAL_MFD_HSU)	+= mfd.o
@@ -78,3 +78,4 @@ obj-$(CONFIG_SERIAL_LANTIQ)	+= lantiq.o
 obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o
 obj-$(CONFIG_SERIAL_SIRFSOC) += sirfsoc_uart.o
 obj-$(CONFIG_SERIAL_AR933X)   += ar933x_uart.o
+obj-$(CONFIG_SERIAL_EFM32_UART) += efm32-uart.o

drivers/tty/serial/altera_uart.c

@@ -377,6 +377,26 @@ static int altera_uart_verify_port(struct uart_port *port,
 	return 0;
 }
 
+#ifdef CONFIG_CONSOLE_POLL
+static int altera_uart_poll_get_char(struct uart_port *port)
+{
+	while (!(altera_uart_readl(port, ALTERA_UART_STATUS_REG) &
+		 ALTERA_UART_STATUS_RRDY_MSK))
+		cpu_relax();
+
+	return altera_uart_readl(port, ALTERA_UART_RXDATA_REG);
+}
+
+static void altera_uart_poll_put_char(struct uart_port *port, unsigned char c)
+{
+	while (!(altera_uart_readl(port, ALTERA_UART_STATUS_REG) &
+		 ALTERA_UART_STATUS_TRDY_MSK))
+		cpu_relax();
+
+	altera_uart_writel(port, c, ALTERA_UART_TXDATA_REG);
+}
+#endif
+
 /*
  *	Define the basic serial functions we support.
  */
@@ -397,35 +417,16 @@ static struct uart_ops altera_uart_ops = {
 	.release_port	= altera_uart_release_port,
 	.config_port	= altera_uart_config_port,
 	.verify_port	= altera_uart_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+	.poll_get_char	= altera_uart_poll_get_char,
+	.poll_put_char	= altera_uart_poll_put_char,
+#endif
 };
 
 static struct altera_uart altera_uart_ports[CONFIG_SERIAL_ALTERA_UART_MAXPORTS];
 
 #if defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE)
 
-int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp)
-{
-	struct uart_port *port;
-	int i;
-
-	for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS && platp[i].mapbase; i++) {
-		port = &altera_uart_ports[i].port;
-
-		port->line = i;
-		port->type = PORT_ALTERA_UART;
-		port->mapbase = platp[i].mapbase;
-		port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE);
-		port->iotype = SERIAL_IO_MEM;
-		port->irq = platp[i].irq;
-		port->uartclk = platp[i].uartclk;
-		port->flags = UPF_BOOT_AUTOCONF;
-		port->ops = &altera_uart_ops;
-		port->private_data = platp;
-	}
-
-	return 0;
-}
-
 static void altera_uart_console_putc(struct uart_port *port, const char c)
 {
 	while (!(altera_uart_readl(port, ALTERA_UART_STATUS_REG) &

drivers/tty/serial/m32r_sio.c

@@ -70,13 +70,6 @@
 
 #define PASS_LIMIT	256
 
-/*
- * We default to IRQ0 for the "no irq" hack.   Some
- * machine types want others as well - they're free
- * to redefine this in their header file.
- */
-#define is_real_interrupt(irq)	((irq) != 0)
-
 #define BASE_BAUD	115200
 
 /* Standard COM flags */
@@ -640,7 +633,7 @@ static int m32r_sio_startup(struct uart_port *port)
 	 * hardware interrupt, we use a timer-based system.  The original
 	 * driver used to do this with IRQ0.
 	 */
-	if (!is_real_interrupt(up->port.irq)) {
+	if (!up->port.irq) {
 		unsigned int timeout = up->port.timeout;
 
 		timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
@@ -687,7 +680,7 @@ static void m32r_sio_shutdown(struct uart_port *port)
 
 	sio_init();
 
-	if (!is_real_interrupt(up->port.irq))
+	if (!up->port.irq)
 		del_timer_sync(&up->timer);
 	else
 		serial_unlink_irq_chain(up);

drivers/tty/serial/mpc52xx_uart.c

@@ -507,7 +507,7 @@ static int __init mpc512x_psc_fifoc_init(void)
 
 	psc_fifoc_irq = irq_of_parse_and_map(np, 0);
 	of_node_put(np);
-	if (psc_fifoc_irq == NO_IRQ) {
+	if (psc_fifoc_irq == 0) {
 		pr_err("%s: Can't get FIFOC irq\n", __func__);
 		iounmap(psc_fifoc);
 		return -ENODEV;
@@ -1354,7 +1354,7 @@ static int __devinit mpc52xx_uart_of_probe(struct platform_device *op)
 	}
 
 	psc_ops->get_irq(port, op->dev.of_node);
-	if (port->irq == NO_IRQ) {
+	if (port->irq == 0) {
 		dev_dbg(&op->dev, "Could not get irq\n");
 		return -EINVAL;
 	}