Merge tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here's the tty and serial driver patches for 4.2-rc1.

  A number of individual driver updates, some code cleanups, and other
  minor things, full details in the shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'tty-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (152 commits)
  Doc: serial-rs485.txt: update RS485 driver interface
  Doc: tty.txt: remove mention of the BKL
  MAINTAINERS: tty: add serial docs directory
  serial: sprd: check for NULL after calling devm_clk_get
  serial: 8250_pci: Correct uartclk for xr17v35x expansion chips
  serial: 8250_pci: Add support for 12 port Exar boards
  serial: 8250_uniphier: add bindings document for UniPhier UART
  serial: core: cleanup in uart_get_baud_rate()
  serial: stm32-usart: Add STM32 USART Driver
  tty/serial: kill off set_irq_flags usage
  tty: move linux/gsmmux.h to uapi
  doc: dt: add documentation for nxp,lpc1850-uart
  serial: 8250: add LPC18xx/43xx UART driver
  serial: 8250_uniphier: add UniPhier serial driver
  serial: 8250_dw: support ACPI platforms with integrated DMA engine
  serial: of_serial: check the return value of clk_prepare_enable()
  serial: of_serial: use devm_clk_get() instead of clk_get()
  serial: earlycon: Add support for big-endian MMIO accesses
  serial: sirf: use hrtimer for data rx
  serial: sirf: correct the fifo empty_bit
  ...

diff --cc Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
Simple merge

diff --cc Documentation/kernel-parameters.txt
Simple merge

diff --cc MAINTAINERS
Simple merge

diff --cc drivers/tty/serial/Kconfig
Simple merge

diff --cc drivers/tty/serial/serial_mctrl_gpio.c
Simple merge

diff --cc drivers/tty/serial/sh-sci.c
index 95772cf4e7b074cf192eddd56fd7fff5cfacddc7,b74a644e4b044b8ba29d335cfc852be84f2ce27c..1b2f894bdc9e0e6ed15cf93feb405337b1d0d07b
--- 1/drivers/tty/serial/sh-sci.c
--- 2/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@@ -81,10 -81,11 +81,11 @@@ struct sci_port 
  
        /* Platform configuration */
        struct plat_sci_port    *cfg;
-       int                     overrun_bit;
+       unsigned int            overrun_reg;
+       unsigned int            overrun_mask;
        unsigned int            error_mask;
        unsigned int            sampling_rate;
 -
 +      resource_size_t         reg_size;
  
        /* Break timer */
        struct timer_list       break_timer;

diff --cc include/uapi/linux/Kbuild
Simple merge