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
  ...

4 files changed, 44 insertions, 1 deletions

diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index baa7c80da6af..c1c23f19d4a2 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -138,6 +138,7 @@ header-y += genetlink.h
 header-y += gen_stats.h
 header-y += gfs2_ondisk.h
 header-y += gigaset_dev.h
+header-y += gsmmux.h
 header-y += hdlcdrv.h
 header-y += hdlc.h
 header-y += hdreg.h
diff --git a/include/uapi/linux/gsmmux.h b/include/uapi/linux/gsmmux.h
new file mode 100644
index 000000000000..c06742d52856
--- /dev/null
+++ b/include/uapi/linux/gsmmux.h
@@ -0,0 +1,39 @@
+#ifndef _LINUX_GSMMUX_H
+#define _LINUX_GSMMUX_H
+
+#include <linux/if.h>
+#include <linux/ioctl.h>
+
+struct gsm_config
+{
+	unsigned int adaption;
+	unsigned int encapsulation;
+	unsigned int initiator;
+	unsigned int t1;
+	unsigned int t2;
+	unsigned int t3;
+	unsigned int n2;
+	unsigned int mru;
+	unsigned int mtu;
+	unsigned int k;
+	unsigned int i;
+	unsigned int unused[8];		/* Padding for expansion without
+					   breaking stuff */
+};
+
+#define GSMIOC_GETCONF		_IOR('G', 0, struct gsm_config)
+#define GSMIOC_SETCONF		_IOW('G', 1, struct gsm_config)
+
+struct gsm_netconfig {
+	unsigned int adaption;  /* Adaption to use in network mode */
+	unsigned short protocol;/* Protocol to use - only ETH_P_IP supported */
+	unsigned short unused2;
+	char if_name[IFNAMSIZ];	/* interface name format string */
+	__u8 unused[28];        /* For future use */
+};
+
+#define GSMIOC_ENABLE_NET      _IOW('G', 2, struct gsm_netconfig)
+#define GSMIOC_DISABLE_NET     _IO('G', 3)
+
+
+#endif
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index b2122813f18a..93ba148f923e 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -258,4 +258,7 @@
 /* Cris v10 / v32 SoC */
 #define PORT_CRIS	112
 
+/* STM32 USART */
+#define PORT_STM32	113
+
 #endif /* _UAPILINUX_SERIAL_CORE_H */
diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h
index fae4864737fa..072e41e45ee2 100644
--- a/include/uapi/linux/tty_flags.h
+++ b/include/uapi/linux/tty_flags.h
@@ -15,7 +15,7 @@
 #define ASYNCB_FOURPORT		 1 /* Set OU1, OUT2 per AST Fourport settings */
 #define ASYNCB_SAK		 2 /* Secure Attention Key (Orange book) */
 #define ASYNCB_SPLIT_TERMIOS	 3 /* [x] Separate termios for dialin/callout */
-#define ASYNCB_SPD_HI		 4 /* Use 56000 instead of 38400 bps */
+#define ASYNCB_SPD_HI		 4 /* Use 57600 instead of 38400 bps */
 #define ASYNCB_SPD_VHI		 5 /* Use 115200 instead of 38400 bps */
 #define ASYNCB_SKIP_TEST	 6 /* Skip UART test during autoconfiguration */
 #define ASYNCB_AUTO_IRQ		 7 /* Do automatic IRQ during