Merge tag 'tty-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull TTY/Serial merge from Greg Kroah-Hartman:
 "Here's the big tty/serial tree set of changes for 3.8-rc1.

  Contained in here is a bunch more reworks of the tty port layer from
  Jiri and bugfixes from Alan, along with a number of other tty and
  serial driver updates by the various driver authors.

  Also, Jiri has been coerced^Wconvinced to be the co-maintainer of the
  TTY layer, which is much appreciated by me.

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

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

Fixed up some trivial conflicts in the staging tree, due to the fwserial
driver having come in both ways (but fixed up a bit in the serial tree),
and the ioctl handling in the dgrp driver having been done slightly
differently (staging tree got that one right, and removed both
TIOCGSOFTCAR and TIOCSSOFTCAR).

* tag 'tty-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (146 commits)
  staging: sb105x: fix potential NULL pointer dereference in mp_chars_in_buffer()
  staging/fwserial: Remove superfluous free
  staging/fwserial: Use WARN_ONCE when port table is corrupted
  staging/fwserial: Destruct embedded tty_port on teardown
  staging/fwserial: Fix build breakage when !CONFIG_BUG
  staging: fwserial: Add TTY-over-Firewire serial driver
  drivers/tty/serial/serial_core.c: clean up HIGH_BITS_OFFSET usage
  staging: dgrp: dgrp_tty.c: Audit the return values of get/put_user()
  staging: dgrp: dgrp_tty.c: Remove the TIOCSSOFTCAR ioctl handler from dgrp driver
  serial: ifx6x60: Add modem power off function in the platform reboot process
  serial: mxs-auart: unmap the scatter list before we copy the data
  serial: mxs-auart: disable the Receive Timeout Interrupt when DMA is enabled
  serial: max310x: Setup missing "can_sleep" field for GPIO
  tty/serial: fix ifx6x60.c declaration warning
  serial: samsung: add devicetree properties for non-Exynos SoCs
  serial: samsung: fix potential soft lockup during uart write
  tty: vt: Remove redundant null check before kfree.
  tty/8250 Add check for pci_ioremap_bar failure
  tty/8250 Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards
  tty/8250 Add XR17D15x devices to the exar_handle_irq override
  ...

1 files changed, 11 insertions, 13 deletions

diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index d2339ea37815..bd57a11acc79 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -66,8 +66,6 @@ struct uart_icount {
 
 struct sdio_uart_port {
         struct tty_port         port;
-        struct kref             kref;
-        struct tty_struct       *tty;
         unsigned int            index;
         struct sdio_func        *func;
         struct mutex            func_lock;
@@ -93,7 +91,6 @@ static int sdio_uart_add_port(struct sdio_uart_port *port)
 {
         int index, ret = -EBUSY;
 
-        kref_init(&port->kref);
         mutex_init(&port->func_lock);
         spin_lock_init(&port->write_lock);
         if (kfifo_alloc(&port->xmit_fifo, FIFO_SIZE, GFP_KERNEL))
@@ -123,23 +120,15 @@ static struct sdio_uart_port *sdio_uart_port_get(unsigned index)
         spin_lock(&sdio_uart_table_lock);
         port = sdio_uart_table[index];
         if (port)
-                kref_get(&port->kref);
+                tty_port_get(&port->port);
         spin_unlock(&sdio_uart_table_lock);
 
         return port;
 }
 
-static void sdio_uart_port_destroy(struct kref *kref)
-{
-        struct sdio_uart_port *port =
-                container_of(kref, struct sdio_uart_port, kref);
-        kfifo_free(&port->xmit_fifo);
-        kfree(port);
-}
-
 static void sdio_uart_port_put(struct sdio_uart_port *port)
 {
-        kref_put(&port->kref, sdio_uart_port_destroy);
+        tty_port_put(&port->port);
 }
 
 static void sdio_uart_port_remove(struct sdio_uart_port *port)
@@ -737,6 +726,14 @@ static void sdio_uart_shutdown(struct tty_port *tport)
         sdio_uart_release_func(port);
 }
 
+static void sdio_uart_port_destroy(struct tty_port *tport)
+{
+        struct sdio_uart_port *port =
+                container_of(tport, struct sdio_uart_port, port);
+        kfifo_free(&port->xmit_fifo);
+        kfree(port);
+}
+
 /**
  *      sdio_uart_install       -       install method
  *      @driver: the driver in use (sdio_uart in our case)
@@ -1045,6 +1042,7 @@ static const struct tty_port_operations sdio_uart_port_ops = {
         .carrier_raised = uart_carrier_raised,
         .shutdown = sdio_uart_shutdown,
         .activate = sdio_uart_activate,
+        .destruct = sdio_uart_port_destroy,
 };
 
 static const struct tty_operations sdio_uart_ops = {