Merge tag 'tty-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are a number of small tty/serial driver fixes for 3.15-rc2.  Also
  in here are some Documentation file removals for drivers that we
  removed a long time ago, no need to keep it around any longer.

  All of these have been in linux-next for a bit"

* tag 'tty-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "serial: 8250, disable "too much work" messages"
  serial: amba-pl011: fix regression, causing an Oops on rmmod
  tty: Fix help text of SYNCLINK_CS
  tty: fix memleak in alloc_pid
  ttyprintk: Allow built as a module
  ttyprintk: Fix wrong tty_unregister_driver() call in the error path
  serial: 8250, disable "too much work" messages
  Documentation/serial: Delete obsolete driver documentation
  serial: omap: Fix missing pm_runtime_resume handling by simplifying code
  serial_core: Fix pm imbalance on unbind
  serial: pl011: change Rx burst size to half of trigger level
  serial: timberdale: Depend on X86_32
  serial: st-asc: Fix SysRq char handling
  Revert "serial: clps711x: Give a chance to perform useful tasks during wait loop"
  serial_core: Fix conditional start_tx on ring buffer not empty
  serial: efm32: use $vendor,$device scheme for compatible string
  serial: omap: free the wakeup settings in remove

Documentation/devicetree/bindings/serial/efm32-uart.txt

 * Energymicro efm32 UART
 
 Required properties:
-- compatible : Should be "efm32,uart"
+- compatible : Should be "energymicro,efm32-uart"
 - reg : Address and length of the register set
 - interrupts : Should contain uart interrupt
 
@@ -13,7 +13,7 @@ Optional properties:
 Example:
 
 uart@0x4000c400 {
-	compatible = "efm32,uart";
+	compatible = "energymicro,efm32-uart";
 	reg = <0x4000c400 0x400>;
 	interrupts = <15>;
 	efm32,location = <0>;

Documentation/kernel-parameters.txt

@@ -804,13 +804,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	dhash_entries=	[KNL]
 			Set number of hash buckets for dentry cache.
 
-	digi=		[HW,SERIAL]
-			IO parameters + enable/disable command.
-
-	digiepca=	[HW,SERIAL]
-			See drivers/char/README.epca and
-			Documentation/serial/digiepca.txt.
-
 	disable=	[IPV6]
 			See Documentation/networking/ipv6.txt.
 
@@ -2939,9 +2932,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	rhash_entries=	[KNL,NET]
 			Set number of hash buckets for route cache
 
-	riscom8=	[HW,SERIAL]
-			Format: <io_board1>[,<io_board2>[,...<io_boardN>]]
-
 	ro		[KNL] Mount root device read-only on boot
 
 	root=		[KNL] Root filesystem
@@ -3083,9 +3073,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	sonypi.*=	[HW] Sony Programmable I/O Control Device driver
 			See Documentation/laptops/sonypi.txt
 
-	specialix=	[HW,SERIAL] Specialix multi-serial port adapter
-			See Documentation/serial/specialix.txt.
-
 	spia_io_base=	[HW,MTD]
 	spia_fio_base=
 	spia_pedr=

Documentation/magic-number.txt

@@ -63,8 +63,6 @@ Magic Name            Number      Structure            File
 PG_MAGIC              'P'         pg_{read,write}_hdr include/linux/pg.h
 CMAGIC                0x0111      user              include/linux/a.out.h
 MKISS_DRIVER_MAGIC    0x04bf      mkiss_channel     drivers/net/mkiss.h
-RISCOM8_MAGIC         0x0907      riscom_port       drivers/char/riscom8.h
-SPECIALIX_MAGIC       0x0907      specialix_port    drivers/char/specialix_io8.h
 HDLC_MAGIC            0x239e      n_hdlc            drivers/char/n_hdlc.c
 APM_BIOS_MAGIC        0x4101      apm_user          arch/x86/kernel/apm_32.c
 CYCLADES_MAGIC        0x4359      cyclades_port     include/linux/cyclades.h
@@ -82,7 +80,6 @@ STRIP_MAGIC           0x5303      strip             drivers/net/strip.c
 X25_ASY_MAGIC         0x5303      x25_asy           drivers/net/x25_asy.h
 SIXPACK_MAGIC         0x5304      sixpack           drivers/net/hamradio/6pack.h
 AX25_MAGIC            0x5316      ax_disp           drivers/net/mkiss.h
-ESP_MAGIC             0x53ee      esp_struct        drivers/char/esp.h
 TTY_MAGIC             0x5401      tty_struct        include/linux/tty.h
 MGSL_MAGIC            0x5401      mgsl_info         drivers/char/synclink.c
 TTY_DRIVER_MAGIC      0x5402      tty_driver        include/linux/tty_driver.h
@@ -94,13 +91,10 @@ USB_BLUETOOTH_MAGIC   0x6d02      usb_bluetooth     drivers/usb/class/bluetty.c
 RFCOMM_TTY_MAGIC      0x6d02                        net/bluetooth/rfcomm/tty.c
 USB_SERIAL_PORT_MAGIC 0x7301      usb_serial_port   drivers/usb/serial/usb-serial.h
 CG_MAGIC              0x00090255  ufs_cylinder_group include/linux/ufs_fs.h
-A2232_MAGIC           0x000a2232  gs_port           drivers/char/ser_a2232.h
 RPORT_MAGIC           0x00525001  r_port            drivers/char/rocket_int.h
 LSEMAGIC              0x05091998  lse               drivers/fc4/fc.c
 GDTIOCTL_MAGIC        0x06030f07  gdth_iowr_str     drivers/scsi/gdth_ioctl.h
 RIEBL_MAGIC           0x09051990                    drivers/net/atarilance.c
-RIO_MAGIC             0x12345678  gs_port           drivers/char/rio/rio_linux.c
-SX_MAGIC              0x12345678  gs_port           drivers/char/sx.h
 NBD_REQUEST_MAGIC     0x12560953  nbd_request       include/linux/nbd.h
 RED_MAGIC2            0x170fc2a5  (any)             mm/slab.c
 BAYCOM_MAGIC          0x19730510  baycom_state      drivers/net/baycom_epp.c
@@ -116,7 +110,6 @@ ISDN_ASYNC_MAGIC      0x49344C01  modem_info        include/linux/isdn.h
 CTC_ASYNC_MAGIC       0x49344C01  ctc_tty_info      drivers/s390/net/ctctty.c
 ISDN_NET_MAGIC        0x49344C02  isdn_net_local_s  drivers/isdn/i4l/isdn_net_lib.h
 SAVEKMSG_MAGIC2       0x4B4D5347  savekmsg          arch/*/amiga/config.c
-STLI_BOARDMAGIC       0x4bc6c825  stlibrd           include/linux/istallion.h
 CS_STATE_MAGIC        0x4c4f4749  cs_state          sound/oss/cs46xx.c
 SLAB_C_MAGIC          0x4f17a36d  kmem_cache        mm/slab.c
 COW_MAGIC             0x4f4f4f4d  cow_header_v1     arch/um/drivers/ubd_user.c
@@ -127,10 +120,8 @@ SCC_MAGIC             0x52696368  gs_port           drivers/char/scc.h
 SAVEKMSG_MAGIC1       0x53415645  savekmsg          arch/*/amiga/config.c
 GDA_MAGIC             0x58464552  gda               arch/mips/include/asm/sn/gda.h
 RED_MAGIC1            0x5a2cf071  (any)             mm/slab.c
-STL_PORTMAGIC         0x5a7182c9  stlport           include/linux/stallion.h
 EEPROM_MAGIC_VALUE    0x5ab478d2  lanai_dev         drivers/atm/lanai.c
 HDLCDRV_MAGIC         0x5ac6e778  hdlcdrv_state     include/linux/hdlcdrv.h
-EPCA_MAGIC            0x5c6df104  channel           include/linux/epca.h
 PCXX_MAGIC            0x5c6df104  channel           drivers/char/pcxx.h
 KV_MAGIC              0x5f4b565f  kernel_vars_s     arch/mips/include/asm/sn/klkernvars.h
 I810_STATE_MAGIC      0x63657373  i810_state        sound/oss/i810_audio.c
@@ -142,17 +133,14 @@ SLOT_MAGIC            0x67267322  slot              drivers/hotplug/acpiphp.h
 LO_MAGIC              0x68797548  nbd_device        include/linux/nbd.h
 OPROFILE_MAGIC        0x6f70726f  super_block       drivers/oprofile/oprofilefs.h
 M3_STATE_MAGIC        0x734d724d  m3_state          sound/oss/maestro3.c
-STL_PANELMAGIC        0x7ef621a1  stlpanel          include/linux/stallion.h
 VMALLOC_MAGIC         0x87654320  snd_alloc_track   sound/core/memory.c
 KMALLOC_MAGIC         0x87654321  snd_alloc_track   sound/core/memory.c
 PWC_MAGIC             0x89DC10AB  pwc_device        drivers/usb/media/pwc.h
 NBD_REPLY_MAGIC       0x96744668  nbd_reply         include/linux/nbd.h
-STL_BOARDMAGIC        0xa2267f52  stlbrd            include/linux/stallion.h
 ENI155_MAGIC          0xa54b872d  midway_eprom	    drivers/atm/eni.h
 SCI_MAGIC             0xbabeface  gs_port           drivers/char/sh-sci.h
 CODA_MAGIC            0xC0DAC0DA  coda_file_info    fs/coda/coda_fs_i.h
 DPMEM_MAGIC           0xc0ffee11  gdt_pci_sram      drivers/scsi/gdth.h
-STLI_PORTMAGIC        0xe671c7a1  stliport          include/linux/istallion.h
 YAM_MAGIC             0xF10A7654  yam_port          drivers/net/hamradio/yam.c
 CCB_MAGIC             0xf2691ad2  ccb               drivers/scsi/ncr53c8xx.c
 QUEUE_MAGIC_FREE      0xf7e1c9a3  queue_entry       drivers/scsi/arm/queue.c

Documentation/serial/00-INDEX

@@ -2,23 +2,15 @@
 	- this file.
 README.cycladesZ
 	- info on Cyclades-Z firmware loading.
-digiepca.txt
-	- info on Digi Intl. {PC,PCI,EISA}Xx and Xem series cards.
 driver
 	- intro to the low level serial driver.
 moxa-smartio
 	- file with info on installing/using Moxa multiport serial driver.
 n_gsm.txt
 	- GSM 0710 tty multiplexer howto.
-riscom8.txt
-	- notes on using the RISCom/8 multi-port serial driver.
 rocket.txt
 	- info on the Comtrol RocketPort multiport serial driver.
 serial-rs485.txt
 	- info about RS485 structures and support in the kernel.
-specialix.txt
-	- info on hardware/driver for specialix IO8+ multiport serial card.
-sx.txt
-	- info on the Specialix SX/SI multiport serial driver.
 tty.txt
 	- guide to the locking policies of the tty layer.

Documentation/serial/digiepca.txt

-NOTE:  This driver is obsolete.  Digi provides a 2.6 driver (dgdm) at
-http://www.digi.com for PCI cards.  They no longer maintain this driver,
-and have no 2.6 driver for ISA cards.
-
-This driver requires a number of user-space tools.  They can be acquired from
-http://www.digi.com, but only works with 2.4 kernels.
-
-
-The Digi Intl. epca driver. 
-----------------------------
-The Digi Intl. epca driver for Linux supports the following boards:
-
-Digi PC/Xem, PC/Xr, PC/Xe, PC/Xi, PC/Xeve 
-Digi EISA/Xem, PCI/Xem, PCI/Xr 
-
-Limitations:
-------------
-Currently the driver only autoprobes for supported PCI boards. 
-
-The Linux MAKEDEV command does not support generating the Digiboard
-Devices.  Users executing digiConfig to setup EISA and PC series cards
-will have their device nodes automatically constructed (cud?? for ~CLOCAL,
-and ttyD?? for CLOCAL).  Users wishing to boot their board from the LILO
-prompt, or those users booting PCI cards may use buildDIGI to construct 
-the necessary nodes. 
-
-Notes:
-------
-This driver may be configured via LILO.  For users who have already configured
-their driver using digiConfig, configuring from LILO will override previous 
-settings.  Multiple boards may be configured by issuing multiple LILO command 
-lines.  For examples see the bottom of this document.
-
-Device names start at 0 and continue up.  Beware of this as previous Digi 
-drivers started device names with 1.
-
-PCI boards are auto-detected and configured by the driver.  PCI boards will
-be allocated device numbers (internally) beginning with the lowest PCI slot
-first.  In other words a PCI card in slot 3 will always have higher device
-nodes than a PCI card in slot 1. 
-
-LILO config examples:
----------------------
-Using LILO's APPEND command, a string of comma separated identifiers or 
-integers can be used to configure supported boards.  The six values in order 
-are:
-
-   Enable/Disable this card or Override,
-   Type of card: PC/Xe (AccelePort) (0), PC/Xeve (1), PC/Xem or PC/Xr (2), 
-                 EISA/Xem (3), PC/64Xe (4), PC/Xi (5), 
-   Enable/Disable alternate pin arrangement,
-   Number of ports on this card,
-   I/O Port where card is configured (in HEX if using string identifiers),
-   Base of memory window (in HEX if using string identifiers), 
-
-NOTE : PCI boards are auto-detected and configured.  Do not attempt to 
-configure PCI boards with the LILO append command.  If you wish to override
-previous configuration data (As set by digiConfig), but you do not wish to
-configure any specific card (Example if there are PCI cards in the system) 
-the following override command will accomplish this:
--> append="digi=2"
-
-Samples:
-   append="digiepca=E,PC/Xe,D,16,200,D0000"
-                  or
-   append="digi=1,0,0,16,512,851968"
-
-Supporting Tools:
------------------
-Supporting tools include digiDload, digiConfig, buildPCI, and ditty.  See
-drivers/char/README.epca for more details.  Note,
-this driver REQUIRES that digiDload be executed prior to it being used. 
-Failure to do this will result in an ENODEV error.
-
-Documentation:
---------------
-Complete documentation for this product may be found in the tool package. 
-
-Sources of information and support:
------------------------------------
-Digi Intl. support site for this product:
-
-->  http://www.digi.com
-
-Acknowledgments:
-----------------
-Much of this work (And even text) was derived from a similar document 
-supporting the original public domain DigiBoard driver Copyright (C)
-1994,1995 Troy De Jongh.  Many thanks to Christoph Lameter 
-(christoph@lameter.com) and Mike McLagan (mike.mclagan@linux.org) who authored 
-and contributed to the original document. 
-
-Changelog:
-----------
-10-29-04:	Update status of driver, remove dead links in document
-		James Nelson <james4765@gmail.com>
-
-2000 (?)	Original Document

Documentation/serial/riscom8.txt

-* NOTE - this is an unmaintained driver.  The original author cannot be located.
-
-SDL Communications is now SBS Technologies, and does not have any
-information on these ancient ISA cards on their website.
-
-James Nelson <james4765@gmail.com> - 12-12-2004
-
-	This is the README for RISCom/8 multi-port serial driver
-	(C) 1994-1996 D.Gorodchanin
-	See file LICENSE for terms and conditions.
-
-NOTE: English is not my native language. 
-      I'm sorry for any mistakes in this text.
-
-Misc. notes for RISCom/8 serial driver, in no particular order :)
-
-1) This driver can support up to 4 boards at time.
-   Use string "riscom8=0xXXX,0xXXX,0xXXX,0xXXX" at LILO prompt, for
-   setting I/O base addresses for boards. If you compile driver
-   as module use modprobe options "iobase=0xXXX iobase1=0xXXX iobase2=..."
-
-2) The driver partially supports famous 'setserial' program, you can use almost
-   any of its options, excluding port & irq settings.
-
-3) There are some misc. defines at the beginning of riscom8.c, please read the 
-   comments and try to change some of them in case of problems.
-
-4) I consider the current state of the driver as BETA.
-
-5) SDL Communications WWW page is http://www.sdlcomm.com.
-
-6) You can use the MAKEDEV program to create RISCom/8 /dev/ttyL* entries.
-
-7) Minor numbers for first board are 0-7, for second 8-15, etc.
-
-22 Apr 1996.

Documentation/zh_CN/magic-number.txt

@@ -63,8 +63,6 @@ struct tty_ldisc {
 PG_MAGIC              'P'         pg_{read,write}_hdr include/linux/pg.h
 CMAGIC                0x0111      user              include/linux/a.out.h
 MKISS_DRIVER_MAGIC    0x04bf      mkiss_channel     drivers/net/mkiss.h
-RISCOM8_MAGIC         0x0907      riscom_port       drivers/char/riscom8.h
-SPECIALIX_MAGIC       0x0907      specialix_port    drivers/char/specialix_io8.h
 HDLC_MAGIC            0x239e      n_hdlc            drivers/char/n_hdlc.c
 APM_BIOS_MAGIC        0x4101      apm_user          arch/x86/kernel/apm_32.c
 CYCLADES_MAGIC        0x4359      cyclades_port     include/linux/cyclades.h
@@ -82,7 +80,6 @@ STRIP_MAGIC           0x5303      strip             drivers/net/strip.c
 X25_ASY_MAGIC         0x5303      x25_asy           drivers/net/x25_asy.h
 SIXPACK_MAGIC         0x5304      sixpack           drivers/net/hamradio/6pack.h
 AX25_MAGIC            0x5316      ax_disp           drivers/net/mkiss.h
-ESP_MAGIC             0x53ee      esp_struct        drivers/char/esp.h
 TTY_MAGIC             0x5401      tty_struct        include/linux/tty.h
 MGSL_MAGIC            0x5401      mgsl_info         drivers/char/synclink.c
 TTY_DRIVER_MAGIC      0x5402      tty_driver        include/linux/tty_driver.h
@@ -94,13 +91,10 @@ USB_BLUETOOTH_MAGIC   0x6d02      usb_bluetooth     drivers/usb/class/bluetty.c
 RFCOMM_TTY_MAGIC      0x6d02                        net/bluetooth/rfcomm/tty.c
 USB_SERIAL_PORT_MAGIC 0x7301      usb_serial_port   drivers/usb/serial/usb-serial.h
 CG_MAGIC              0x00090255  ufs_cylinder_group include/linux/ufs_fs.h
-A2232_MAGIC           0x000a2232  gs_port           drivers/char/ser_a2232.h
 RPORT_MAGIC           0x00525001  r_port            drivers/char/rocket_int.h
 LSEMAGIC              0x05091998  lse               drivers/fc4/fc.c
 GDTIOCTL_MAGIC        0x06030f07  gdth_iowr_str     drivers/scsi/gdth_ioctl.h
 RIEBL_MAGIC           0x09051990                    drivers/net/atarilance.c
-RIO_MAGIC             0x12345678  gs_port           drivers/char/rio/rio_linux.c
-SX_MAGIC              0x12345678  gs_port           drivers/char/sx.h
 NBD_REQUEST_MAGIC     0x12560953  nbd_request       include/linux/nbd.h
 RED_MAGIC2            0x170fc2a5  (any)             mm/slab.c
 BAYCOM_MAGIC          0x19730510  baycom_state      drivers/net/baycom_epp.c
@@ -116,7 +110,6 @@ ISDN_ASYNC_MAGIC      0x49344C01  modem_info        include/linux/isdn.h
 CTC_ASYNC_MAGIC       0x49344C01  ctc_tty_info      drivers/s390/net/ctctty.c
 ISDN_NET_MAGIC        0x49344C02  isdn_net_local_s  drivers/isdn/i4l/isdn_net_lib.h
 SAVEKMSG_MAGIC2       0x4B4D5347  savekmsg          arch/*/amiga/config.c
-STLI_BOARDMAGIC       0x4bc6c825  stlibrd           include/linux/istallion.h
 CS_STATE_MAGIC        0x4c4f4749  cs_state          sound/oss/cs46xx.c
 SLAB_C_MAGIC          0x4f17a36d  kmem_cache        mm/slab.c
 COW_MAGIC             0x4f4f4f4d  cow_header_v1     arch/um/drivers/ubd_user.c
@@ -127,10 +120,8 @@ SCC_MAGIC             0x52696368  gs_port           drivers/char/scc.h
 SAVEKMSG_MAGIC1       0x53415645  savekmsg          arch/*/amiga/config.c
 GDA_MAGIC             0x58464552  gda               arch/mips/include/asm/sn/gda.h
 RED_MAGIC1            0x5a2cf071  (any)             mm/slab.c
-STL_PORTMAGIC         0x5a7182c9  stlport           include/linux/stallion.h
 EEPROM_MAGIC_VALUE    0x5ab478d2  lanai_dev         drivers/atm/lanai.c
 HDLCDRV_MAGIC         0x5ac6e778  hdlcdrv_state     include/linux/hdlcdrv.h
-EPCA_MAGIC            0x5c6df104  channel           include/linux/epca.h
 PCXX_MAGIC            0x5c6df104  channel           drivers/char/pcxx.h
 KV_MAGIC              0x5f4b565f  kernel_vars_s     arch/mips/include/asm/sn/klkernvars.h
 I810_STATE_MAGIC      0x63657373  i810_state        sound/oss/i810_audio.c
@@ -142,17 +133,14 @@ SLOT_MAGIC            0x67267322  slot              drivers/hotplug/acpiphp.h
 LO_MAGIC              0x68797548  nbd_device        include/linux/nbd.h
 OPROFILE_MAGIC        0x6f70726f  super_block       drivers/oprofile/oprofilefs.h
 M3_STATE_MAGIC        0x734d724d  m3_state          sound/oss/maestro3.c
-STL_PANELMAGIC        0x7ef621a1  stlpanel          include/linux/stallion.h
 VMALLOC_MAGIC         0x87654320  snd_alloc_track   sound/core/memory.c
 KMALLOC_MAGIC         0x87654321  snd_alloc_track   sound/core/memory.c
 PWC_MAGIC             0x89DC10AB  pwc_device        drivers/usb/media/pwc.h
 NBD_REPLY_MAGIC       0x96744668  nbd_reply         include/linux/nbd.h
-STL_BOARDMAGIC        0xa2267f52  stlbrd            include/linux/stallion.h
 ENI155_MAGIC          0xa54b872d  midway_eprom	    drivers/atm/eni.h
 SCI_MAGIC             0xbabeface  gs_port           drivers/char/sh-sci.h
 CODA_MAGIC            0xC0DAC0DA  coda_file_info    include/linux/coda_fs_i.h
 DPMEM_MAGIC           0xc0ffee11  gdt_pci_sram      drivers/scsi/gdth.h
-STLI_PORTMAGIC        0xe671c7a1  stliport          include/linux/istallion.h
 YAM_MAGIC             0xF10A7654  yam_port          drivers/net/hamradio/yam.c
 CCB_MAGIC             0xf2691ad2  ccb               drivers/scsi/ncr53c8xx.c
 QUEUE_MAGIC_FREE      0xf7e1c9a3  queue_entry       drivers/scsi/arm/queue.c

drivers/char/Kconfig

@@ -40,7 +40,7 @@ config SGI_MBCS
 source "drivers/tty/serial/Kconfig"
 
 config TTY_PRINTK
-	bool "TTY driver to output user messages via printk"
+	tristate "TTY driver to output user messages via printk"
 	depends on EXPERT && TTY
 	default n
 	---help---

drivers/char/pcmcia/Kconfig

@@ -15,7 +15,7 @@ config SYNCLINK_CS
 
 	  This driver may be built as a module ( = code which can be
 	  inserted in and removed from the running kernel whenever you want).
-	  The module will be called synclinkmp.  If you want to do that, say M
+	  The module will be called synclink_cs.  If you want to do that, say M
 	  here.
 
 config CARDMAN_4000

drivers/char/ttyprintk.c

@@ -17,7 +17,7 @@
 #include <linux/device.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
-#include <linux/export.h>
+#include <linux/module.h>
 
 struct ttyprintk_port {
 	struct tty_port port;
@@ -210,10 +210,19 @@ static int __init ttyprintk_init(void)
 	return 0;
 
 error:
-	tty_unregister_driver(ttyprintk_driver);
 	put_tty_driver(ttyprintk_driver);
 	tty_port_destroy(&tpk_port.port);
-	ttyprintk_driver = NULL;
 	return ret;
 }
+
+static void __exit ttyprintk_exit(void)
+{
+	tty_unregister_driver(ttyprintk_driver);
+	put_tty_driver(ttyprintk_driver);
+	tty_port_destroy(&tpk_port.port);
+}
+
 device_initcall(ttyprintk_init);
+module_exit(ttyprintk_exit);
+
+MODULE_LICENSE("GPL");

drivers/tty/serial/Kconfig

@@ -1226,6 +1226,7 @@ config SERIAL_BFIN_SPORT3_UART_CTSRTS
 config SERIAL_TIMBERDALE
 	tristate "Support for timberdale UART"
 	select SERIAL_CORE
+	depends on X86_32 || COMPILE_TEST
 	---help---
 	Add support for UART controller on timberdale.
 

drivers/tty/serial/amba-pl011.c

@@ -318,7 +318,7 @@ static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port *
 			.src_addr = uap->port.mapbase + UART01x_DR,
 			.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE,
 			.direction = DMA_DEV_TO_MEM,
-			.src_maxburst = uap->fifosize >> 1,
+			.src_maxburst = uap->fifosize >> 2,
 			.device_fc = false,
 		};
 
@@ -2176,6 +2176,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 static int pl011_remove(struct amba_device *dev)
 {
 	struct uart_amba_port *uap = amba_get_drvdata(dev);
+	bool busy = false;
 	int i;
 
 	uart_remove_one_port(&amba_reg, &uap->port);
@@ -2183,8 +2184,11 @@ static int pl011_remove(struct amba_device *dev)
 	for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
 		if (amba_ports[i] == uap)
 			amba_ports[i] = NULL;
+		else if (amba_ports[i])
+			busy = true;
 
 	pl011_dma_remove(uap);
+	if (!busy)
 		uart_unregister_driver(&amba_reg);
 	return 0;
 }

drivers/tty/serial/clps711x.c

@@ -368,16 +368,12 @@ static const struct uart_ops uart_clps711x_ops = {
 static void uart_clps711x_console_putchar(struct uart_port *port, int ch)
 {
 	struct clps711x_port *s = dev_get_drvdata(port->dev);
-
-	/* Wait for FIFO is not full */
-	while (1) {
 	u32 sysflg = 0;
 
+	/* Wait for FIFO is not full */
+	do {
 		regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
-		if (!(sysflg & SYSFLG_UTXFF))
-			break;
-		cond_resched();
-	}
+	} while (sysflg & SYSFLG_UTXFF);
 
 	writew(ch, port->membase + UARTDR_OFFSET);
 }
@@ -387,18 +383,14 @@ static void uart_clps711x_console_write(struct console *co, const char *c,
 {
 	struct uart_port *port = clps711x_uart.state[co->index].uart_port;
 	struct clps711x_port *s = dev_get_drvdata(port->dev);
+	u32 sysflg = 0;
 
 	uart_console_write(port, c, n, uart_clps711x_console_putchar);
 
 	/* Wait for transmitter to become empty */
-	while (1) {
-		u32 sysflg = 0;
-
+	do {
 		regmap_read(s->syscon, SYSFLG_OFFSET, &sysflg);
-		if (!(sysflg & SYSFLG_UBUSY))
-			break;
-		cond_resched();
-	}
+	} while (sysflg & SYSFLG_UBUSY);
 }
 
 static int uart_clps711x_console_setup(struct console *co, char *options)

drivers/tty/serial/efm32-uart.c

@@ -798,6 +798,9 @@ static int efm32_uart_remove(struct platform_device *pdev)
 
 static const struct of_device_id efm32_uart_dt_ids[] = {
 	{
+		.compatible = "energymicro,efm32-uart",
+	}, {
+		/* doesn't follow the "vendor,device" scheme, don't use */
 		.compatible = "efm32,uart",
 	}, {
 		/* sentinel */

drivers/tty/serial/omap-serial.c

@@ -225,14 +225,19 @@ static inline void serial_omap_enable_wakeirq(struct uart_omap_port *up,
 	if (enable)
 		enable_irq(up->wakeirq);
 	else
-		disable_irq(up->wakeirq);
+		disable_irq_nosync(up->wakeirq);
 }
 
 static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
 {
 	struct omap_uart_port_info *pdata = dev_get_platdata(up->dev);
 
+	if (enable == up->wakeups_enabled)
+		return;
+
 	serial_omap_enable_wakeirq(up, enable);
+	up->wakeups_enabled = enable;
+
 	if (!pdata || !pdata->enable_wakeup)
 		return;
 
@@ -1495,6 +1500,11 @@ static int serial_omap_suspend(struct device *dev)
 	uart_suspend_port(&serial_omap_reg, &up->port);
 	flush_work(&up->qos_work);
 
+	if (device_may_wakeup(dev))
+		serial_omap_enable_wakeup(up, true);
+	else
+		serial_omap_enable_wakeup(up, false);
+
 	return 0;
 }
 
@@ -1502,6 +1512,9 @@ static int serial_omap_resume(struct device *dev)
 {
 	struct uart_omap_port *up = dev_get_drvdata(dev);
 
+	if (device_may_wakeup(dev))
+		serial_omap_enable_wakeup(up, false);
+
 	uart_resume_port(&serial_omap_reg, &up->port);
 
 	return 0;
@@ -1789,6 +1802,7 @@ static int serial_omap_remove(struct platform_device *dev)
 	pm_runtime_disable(up->dev);
 	uart_remove_one_port(&serial_omap_reg, &up->port);
 	pm_qos_remove_request(&up->pm_qos_request);
+	device_init_wakeup(&dev->dev, false);
 
 	return 0;
 }
@@ -1877,17 +1891,7 @@ static int serial_omap_runtime_suspend(struct device *dev)
 
 	up->context_loss_cnt = serial_omap_get_context_loss_count(up);
 
-	if (device_may_wakeup(dev)) {
-		if (!up->wakeups_enabled) {
 	serial_omap_enable_wakeup(up, true);
-			up->wakeups_enabled = true;
-		}
-	} else {
-		if (up->wakeups_enabled) {
-			serial_omap_enable_wakeup(up, false);
-			up->wakeups_enabled = false;
-		}
-	}
 
 	up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
 	schedule_work(&up->qos_work);
@@ -1901,6 +1905,8 @@ static int serial_omap_runtime_resume(struct device *dev)
 
 	int loss_cnt = serial_omap_get_context_loss_count(up);
 
+	serial_omap_enable_wakeup(up, false);
+
 	if (loss_cnt < 0) {
 		dev_dbg(dev, "serial_omap_get_context_loss_count failed : %d\n",
 			loss_cnt);

drivers/tty/serial/serial_core.c

@@ -89,8 +89,7 @@ static void __uart_start(struct tty_struct *tty)
 	struct uart_state *state = tty->driver_data;
 	struct uart_port *port = state->uart_port;
 
-	if (!uart_circ_empty(&state->xmit) && state->xmit.buf &&
-	    !tty->stopped && !tty->hw_stopped)
+	if (!tty->stopped && !tty->hw_stopped)
 		port->ops->start_tx(port);
 }
 
@@ -1452,6 +1451,8 @@ static void uart_hangup(struct tty_struct *tty)
 		clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
 		spin_unlock_irqrestore(&port->lock, flags);
 		tty_port_tty_set(port, NULL);
+		if (!uart_console(state->uart_port))
+			uart_change_pm(state, UART_PM_STATE_OFF);
 		wake_up_interruptible(&port->open_wait);
 		wake_up_interruptible(&port->delta_msr_wait);
 	}

drivers/tty/serial/st-asc.c

@@ -295,7 +295,7 @@ static void asc_receive_chars(struct uart_port *port)
 			status & ASC_STA_OE) {
 
 			if (c & ASC_RXBUF_FE) {
-				if (c == ASC_RXBUF_FE) {
+				if (c == (ASC_RXBUF_FE | ASC_RXBUF_DUMMY_RX)) {
 					port->icount.brk++;
 					if (uart_handle_break(port))
 						continue;
@@ -325,7 +325,7 @@ static void asc_receive_chars(struct uart_port *port)
 				flag = TTY_FRAME;
 		}
 
-		if (uart_handle_sysrq_char(port, c))
+		if (uart_handle_sysrq_char(port, c & 0xff))
 			continue;
 
 		uart_insert_char(port, c, ASC_RXBUF_DUMMY_OE, c & 0xff, flag);

drivers/tty/tty_io.c

@@ -878,9 +878,8 @@ void disassociate_ctty(int on_exit)
 	spin_lock_irq(&current->sighand->siglock);
 	put_pid(current->signal->tty_old_pgrp);
 	current->signal->tty_old_pgrp = NULL;
-	spin_unlock_irq(&current->sighand->siglock);
 
-	tty = get_current_tty();
+	tty = tty_kref_get(current->signal->tty);
 	if (tty) {
 		unsigned long flags;
 		spin_lock_irqsave(&tty->ctrl_lock, flags);
@@ -897,6 +896,7 @@ void disassociate_ctty(int on_exit)
 #endif
 	}
 
+	spin_unlock_irq(&current->sighand->siglock);
 	/* Now clear signal->tty under the lock */
 	read_lock(&tasklist_lock);
 	session_clear_tty(task_session(current));

firmware/WHENCE

@@ -273,16 +273,6 @@ Converted from Intel HEX files, used in our binary representation of ihex.
 
 --------------------------------------------------------------------------
 
-Driver: ip2 -- Computone IntelliPort Plus serial device
-
-File: intelliport2.bin
-
-Licence: Unknown
-
-Found in hex form in kernel source.
-
---------------------------------------------------------------------------
-
 Driver: CPiA2 -- cameras based on Vision's CPiA2
 
 File: cpia2/stv0672_vp4.bin