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.

2 files changed, 7 insertions, 15 deletions

diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
index 8d513a8c5266..d84707d55203 100644
--- a/arch/ia64/hp/sim/Kconfig
+++ b/arch/ia64/hp/sim/Kconfig
@@ -8,6 +8,7 @@ config HP_SIMETH
 
 config HP_SIMSERIAL
         bool "Simulated serial driver support"
+        depends on TTY
 
 config HP_SIMSERIAL_CONSOLE
         bool "Console for HP simulator"
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index fc3924d18c1f..da2f319fb71d 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -53,7 +53,7 @@ struct tty_driver *hp_simserial_driver;
 
 static struct console *console;
 
-static void receive_chars(struct tty_struct *tty)
+static void receive_chars(struct tty_port *port)
 {
         unsigned char ch;
         static unsigned char seen_esc = 0;
@@ -81,10 +81,10 @@ static void receive_chars(struct tty_struct *tty)
                 }
                 seen_esc = 0;
 
-                if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+                if (tty_insert_flip_char(port, ch, TTY_NORMAL) == 0)
                         break;
         }
-        tty_flip_buffer_push(tty);
+        tty_flip_buffer_push(port);
 }
 
 /*
@@ -93,18 +93,9 @@ static void receive_chars(struct tty_struct *tty)
 static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
 {
         struct serial_state *info = dev_id;
-        struct tty_struct *tty = tty_port_tty_get(&info->port);
 
-        if (!tty) {
-                printk(KERN_INFO "%s: tty=0 problem\n", __func__);
-                return IRQ_NONE;
-        }
-        /*
-         * pretty simple in our case, because we only get interrupts
-         * on inbound traffic
-         */
-        receive_chars(tty);
-        tty_kref_put(tty);
+        receive_chars(&info->port);
+
         return IRQ_HANDLED;
 }
 
@@ -435,7 +426,7 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
         struct tty_port *port = &info->port;
 
         tty->driver_data = info;
-        tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+        port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 
         /*
          * figure out which console to use (should be one already)