Merge tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial patches from Greg Kroah-Hartman:
 "Here's the big tty/serial driver patches for 3.9-rc1.

  More tty port rework and fixes from Jiri here, as well as lots of
  individual serial driver updates and fixes.

  All of these have been in the linux-next tree for a while."

* tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits)
  tty: mxser: improve error handling in mxser_probe() and mxser_module_init()
  serial: imx: fix uninitialized variable warning
  serial: tegra: assume CONFIG_OF
  TTY: do not update atime/mtime on read/write
  lguest: select CONFIG_TTY to build properly.
  ARM defconfigs: add missing inclusions of linux/platform_device.h
  fb/exynos: include platform_device.h
  ARM: sa1100/assabet: include platform_device.h directly
  serial: imx: Fix recursive locking bug
  pps: Fix build breakage from decoupling pps from tty
  tty: Remove ancient hardpps()
  pps: Additional cleanups in uart_handle_dcd_change
  pps: Move timestamp read into PPS code proper
  pps: Don't crash the machine when exiting will do
  pps: Fix a use-after free bug when unregistering a source.
  pps: Use pps_lookup_dev to reduce ldisc coupling
  pps: Add pps_lookup_dev() function
  tty: serial: uartlite: Support uartlite on big and little endian systems
  tty: serial: uartlite: Fix sparse and checkpatch warnings
  serial/arc-uart: Miscll DT related updates (Grant's review comments)
  ...

Fix up trivial conflicts, mostly just due to the TTY config option
clashing with the EXPERIMENTAL removal.

6 files changed, 27 insertions, 39 deletions

diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index 2c9a776..71bf959 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -11,7 +11,7 @@ config TN3270
 config TN3270_TTY
 	def_tristate y
 	prompt "Support for tty input/output on 3270 terminals"
-	depends on TN3270
+	depends on TN3270 && TTY
 	help
 	  Include support for using an IBM 3270 terminal as a Linux tty.
 
@@ -33,7 +33,7 @@ config TN3270_CONSOLE
 config TN3215
 	def_bool y
 	prompt "Support for 3215 line mode terminal"
-	depends on CCW
+	depends on CCW && TTY
 	help
 	  Include support for IBM 3215 line-mode terminals.
 
@@ -51,7 +51,7 @@ config CCW_CONSOLE
 config SCLP_TTY
 	def_bool y
 	prompt "Support for SCLP line mode terminal"
-	depends on S390
+	depends on S390 && TTY
 	help
 	  Include support for IBM SCLP line-mode terminals.
 
@@ -66,7 +66,7 @@ config SCLP_CONSOLE
 config SCLP_VT220_TTY
 	def_bool y
 	prompt "Support for SCLP VT220-compatible terminal"
-	depends on S390
+	depends on S390 && TTY
 	help
 	  Include support for an IBM SCLP VT220-compatible terminal.
 
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 33b7141..7b00fa6 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -412,8 +412,9 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm,
 				break;
 
 			case CTRLCHAR_CTRL:
-				tty_insert_flip_char(tty, cchar, TTY_NORMAL);
-				tty_flip_buffer_push(tty);
+				tty_insert_flip_char(&raw->port, cchar,
+						TTY_NORMAL);
+				tty_flip_buffer_push(&raw->port);
 				break;
 
 			case CTRLCHAR_NONE:
@@ -425,8 +426,9 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm,
 					count++;
 				} else
 					count -= 2;
-				tty_insert_flip_string(tty, raw->inbuf, count);
-				tty_flip_buffer_push(tty);
+				tty_insert_flip_string(&raw->port, raw->inbuf,
+						count);
+				tty_flip_buffer_push(&raw->port);
 				break;
 			}
 		} else if (req->type == RAW3215_WRITE) {
@@ -970,7 +972,7 @@ static int tty3215_open(struct tty_struct *tty, struct file * filp)
 
 	tty_port_tty_set(&raw->port, tty);
 
-	tty->low_latency = 0;  /* don't use bottom half for pushing chars */
+	raw->port.low_latency = 0; /* don't use bottom half for pushing chars */
 	/*
 	 * Start up 3215 device
 	 */
diff --git a/drivers/s390/char/keyboard.h b/drivers/s390/char/keyboard.h
index d0ae2be..a31f339 100644
--- a/drivers/s390/char/keyboard.h
+++ b/drivers/s390/char/keyboard.h
@@ -43,22 +43,14 @@ int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long);
 static inline void
 kbd_put_queue(struct tty_port *port, int ch)
 {
-	struct tty_struct *tty = tty_port_tty_get(port);
-	if (!tty)
-		return;
-	tty_insert_flip_char(tty, ch, 0);
-	tty_schedule_flip(tty);
-	tty_kref_put(tty);
+	tty_insert_flip_char(port, ch, 0);
+	tty_schedule_flip(port);
 }
 
 static inline void
 kbd_puts_queue(struct tty_port *port, char *cp)
 {
-	struct tty_struct *tty = tty_port_tty_get(port);
-	if (!tty)
-		return;
 	while (*cp)
-		tty_insert_flip_char(tty, *cp++, 0);
-	tty_schedule_flip(tty);
-	tty_kref_put(tty);
+		tty_insert_flip_char(port, *cp++, 0);
+	tty_schedule_flip(port);
 }
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 877fbc3..14b4cb8 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -65,7 +65,7 @@ sclp_tty_open(struct tty_struct *tty, struct file *filp)
 {
 	tty_port_tty_set(&sclp_port, tty);
 	tty->driver_data = NULL;
-	tty->low_latency = 0;
+	sclp_port.low_latency = 0;
 	return 0;
 }
 
@@ -342,8 +342,8 @@ sclp_tty_input(unsigned char* buf, unsigned int count)
 	case CTRLCHAR_SYSRQ:
 		break;
 	case CTRLCHAR_CTRL:
-		tty_insert_flip_char(tty, cchar, TTY_NORMAL);
-		tty_flip_buffer_push(tty);
+		tty_insert_flip_char(&sclp_port, cchar, TTY_NORMAL);
+		tty_flip_buffer_push(&sclp_port);
 		break;
 	case CTRLCHAR_NONE:
 		/* send (normal) input to line discipline */
@@ -351,11 +351,11 @@ sclp_tty_input(unsigned char* buf, unsigned int count)
 		    (strncmp((const char *) buf + count - 2, "^n", 2) &&
 		     strncmp((const char *) buf + count - 2, "\252n", 2))) {
 			/* add the auto \n */
-			tty_insert_flip_string(tty, buf, count);
-			tty_insert_flip_char(tty, '\n', TTY_NORMAL);
+			tty_insert_flip_string(&sclp_port, buf, count);
+			tty_insert_flip_char(&sclp_port, '\n', TTY_NORMAL);
 		} else
-			tty_insert_flip_string(tty, buf, count - 2);
-		tty_flip_buffer_push(tty);
+			tty_insert_flip_string(&sclp_port, buf, count - 2);
+		tty_flip_buffer_push(&sclp_port);
 		break;
 	}
 	tty_kref_put(tty);
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index effcc87..6c92f62 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -461,14 +461,9 @@ sclp_vt220_write(struct tty_struct *tty, const unsigned char *buf, int count)
 static void
 sclp_vt220_receiver_fn(struct evbuf_header *evbuf)
 {
-	struct tty_struct *tty = tty_port_tty_get(&sclp_vt220_port);
 	char *buffer;
 	unsigned int count;
 
-	/* Ignore input if device is not open */
-	if (tty == NULL)
-		return;
-
 	buffer = (char *) ((addr_t) evbuf + sizeof(struct evbuf_header));
 	count = evbuf->length - sizeof(struct evbuf_header);
 
@@ -480,11 +475,10 @@ sclp_vt220_receiver_fn(struct evbuf_header *evbuf)
 		/* Send input to line discipline */
 		buffer++;
 		count--;
-		tty_insert_flip_string(tty, buffer, count);
-		tty_flip_buffer_push(tty);
+		tty_insert_flip_string(&sclp_vt220_port, buffer, count);
+		tty_flip_buffer_push(&sclp_vt220_port);
 		break;
 	}
-	tty_kref_put(tty);
 }
 
 /*
@@ -495,7 +489,7 @@ sclp_vt220_open(struct tty_struct *tty, struct file *filp)
 {
 	if (tty->count == 1) {
 		tty_port_tty_set(&sclp_vt220_port, tty);
-		tty->low_latency = 0;
+		sclp_vt220_port.low_latency = 0;
 		if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
 			tty->winsize.ws_row = 24;
 			tty->winsize.ws_col = 80;
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 43ea059..3860e79 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -860,7 +860,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
 		tty->driver_data = tp;
 		tty->winsize.ws_row = tp->view.rows - 2;
 		tty->winsize.ws_col = tp->view.cols;
-		tty->low_latency = 0;
+		tp->port.low_latency = 0;
 		/* why to reassign? */
 		tty_port_tty_set(&tp->port, tty);
 		tp->inattr = TF_INPUT;
@@ -893,7 +893,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
 	}
 
 	tty_port_tty_set(&tp->port, tty);
-	tty->low_latency = 0;
+	tp->port.low_latency = 0;
 	tty->winsize.ws_row = tp->view.rows - 2;
 	tty->winsize.ws_col = tp->view.cols;