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Date: Thu, 15 Nov 2012 18:30:35 -0800
From: Joe Millenbach <jmillenbach@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Cox <alan@...ux.intel.com>,
Jiri Slaby <jirislaby@...il.com>, linux-serial@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Josh Triplett <josh@...htriplett.org>,
Joe Millenbach <jmillenbach@...il.com>
Subject: [PATCHv3] tty: Added a CONFIG_TTY option to allow removal of TTY
The option allows you to remove TTY and compile without errors. This
saves space on systems that won't support TTY interfaces anyway.
bloat-o-meter output is below.
The bulk of this patch consists of Kconfig changes adding "depends on
TTY" to various serial devices and similar drivers that require the TTY
layer. Ideally, these dependencies would occur on a common intermediate
symbol such as SERIO, but most drivers "select SERIO" rather than
"depends on SERIO", and "select" does not respect dependencies.
bloat-o-meter output filtered to not show removed entries with awk
'$3 != "-"' as the list was very long.
add/remove: 0/385 grow/shrink: 2/18 up/down: 14/-54016 (-54002)
function old new delta
chr_dev_init 193 205 +12
selinux_setprocattr 1167 1169 +2
static.__warned 557 556 -1
start_kernel 840 835 -5
proc_root_init 167 162 -5
unregister_console 165 157 -8
sys_setsid 213 205 -8
sys_vhangup 37 21 -16
daemonize 689 673 -16
t_stop 72 54 -18
t_next 129 108 -21
static.do_acct_process 838 806 -32
release_task 1157 1125 -32
do_exit 2325 2288 -37
t_start 269 221 -48
static.__func__ 18289 18219 -70
do_task_stat 2962 2892 -70
flush_unauthorized_files 740 614 -126
static._rs 1440 1280 -160
static.__key 8560 8384 -176
Signed-off-by: Joe Millenbach <jmillenbach@...il.com>
Reviewed-by: Josh Triplett <josh@...htriplett.org>
---
v3: Incorporated feedback from Jiri Slaby: fixed compilation issues on non
x86/x64 platforms by finding all calls to alloc_tty_driver and
tty_alloc_driver, then added "depends on" or "selects" TTY to config
options that enabled compilation of those files. Also rebased to newer
kernel sources.
v2: Incorporated feedback from Alan Cox: used "if TTY ... endif" to wrap
long runs of symbols that all need "depends on TTY"; grouped all the
stubbed-out functions together in linux/tty.h.
arch/alpha/Kconfig | 2 ++
arch/ia64/hp/sim/Kconfig | 1 +
arch/m68k/Kconfig.devices | 2 +-
arch/parisc/Kconfig | 1 +
arch/tile/Kconfig | 1 +
arch/um/Kconfig.common | 1 +
arch/xtensa/Kconfig | 1 +
drivers/bluetooth/Kconfig | 1 +
drivers/char/Kconfig | 7 +++---
drivers/char/pcmcia/Kconfig | 4 +--
drivers/i2c/busses/Kconfig | 2 +-
drivers/input/joystick/Kconfig | 4 +++
drivers/input/keyboard/Kconfig | 10 +++++++-
drivers/input/mouse/Kconfig | 3 +++
drivers/input/serio/Kconfig | 1 +
drivers/input/touchscreen/Kconfig | 24 +++++++++++++++++-
drivers/isdn/Kconfig | 1 +
drivers/isdn/capi/Kconfig | 1 +
drivers/isdn/gigaset/Kconfig | 1 +
drivers/isdn/hardware/mISDN/Kconfig | 1 +
drivers/lguest/Kconfig | 2 +-
drivers/media/radio/wl128x/Kconfig | 2 +-
drivers/misc/Kconfig | 2 +-
drivers/misc/ti-st/Kconfig | 2 +-
drivers/mmc/card/Kconfig | 1 +
drivers/net/caif/Kconfig | 2 +-
drivers/net/can/Kconfig | 2 +-
drivers/net/hamradio/Kconfig | 4 +--
drivers/net/irda/Kconfig | 2 +-
drivers/net/ppp/Kconfig | 3 +++
drivers/net/slip/Kconfig | 1 +
drivers/net/usb/Kconfig | 4 +--
drivers/net/wan/Kconfig | 2 +-
drivers/pps/clients/Kconfig | 2 +-
drivers/s390/char/Kconfig | 8 +++---
drivers/staging/ccg/Kconfig | 2 +-
drivers/staging/dgrp/Kconfig | 2 +-
drivers/staging/ipack/devices/Kconfig | 2 +-
drivers/tty/Kconfig | 13 ++++++++++
drivers/tty/Makefile | 2 +-
drivers/tty/hvc/Kconfig | 3 +++
drivers/tty/serial/Kconfig | 4 +++
drivers/usb/class/Kconfig | 2 +-
drivers/usb/gadget/Kconfig | 6 +++++
drivers/usb/serial/Kconfig | 2 +-
fs/proc/Makefile | 3 ++-
include/linux/console.h | 5 ++++
include/linux/proc_fs.h | 5 ++++
include/linux/tty.h | 44 ++++++++++++++++++++++++---------
lib/Kconfig.kgdb | 1 +
net/bluetooth/rfcomm/Kconfig | 1 +
net/irda/ircomm/Kconfig | 2 +-
sound/soc/codecs/Kconfig | 3 ++-
53 files changed, 164 insertions(+), 46 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 5dd7f5d..202c95b 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -126,6 +126,7 @@ choice
config ALPHA_GENERIC
bool "Generic"
+ depends on TTY
help
A generic kernel will run on all supported Alpha hardware.
@@ -492,6 +493,7 @@ config VGA_HOSE
config ALPHA_SRM
bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
+ depends on TTY
default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
---help---
There are two different types of booting firmware on Alphas: SRM,
diff --git a/arch/ia64/hp/sim/Kconfig b/arch/ia64/hp/sim/Kconfig
index 8d513a8..d84707d 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/m68k/Kconfig.devices b/arch/m68k/Kconfig.devices
index 04a3d9b..1ce1593 100644
--- a/arch/m68k/Kconfig.devices
+++ b/arch/m68k/Kconfig.devices
@@ -41,7 +41,7 @@ config NFBLOCK
config NFCON
tristate "NatFeat console driver"
- depends on NATFEAT
+ depends on TTY && NATFEAT
help
Say Y to include support for the ARAnyM NatFeat console driver
which allows the console output to be redirected to the stderr
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 11def45..21fd1a4 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -22,6 +22,7 @@ config PARISC
select GENERIC_STRNCPY_FROM_USER
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
+ select TTY # Needed for pdc_cons.c
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 875d008..ae8a7ca 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -121,6 +121,7 @@ config DEBUG_COPY_FROM_USER
def_bool n
config HVC_TILE
+ depends on TTY
select HVC_DRIVER
def_bool y
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index 648121b..bceee66 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -12,6 +12,7 @@ config UML
select GENERIC_CPU_DEVICES
select GENERIC_IO
select GENERIC_CLOCKEVENTS
+ select TTY # Needed for line.c
config MMU
bool
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index cdcb48a..c392d84 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -130,6 +130,7 @@ choice
config XTENSA_PLATFORM_ISS
bool "ISS"
+ depends on TTY
select XTENSA_CALIBRATE_CCOUNT
select SERIAL_CONSOLE
select XTENSA_ISS_NETWORK
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index e9f203e..fdfd61a 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -26,6 +26,7 @@ config BT_HCIBTSDIO
config BT_HCIUART
tristate "HCI UART driver"
+ depends on TTY
help
Bluetooth HCI UART driver.
This driver is required if you want to use Bluetooth devices with
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 72bedad..3bb6fa3 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -53,7 +53,7 @@ source "drivers/tty/serial/Kconfig"
config TTY_PRINTK
bool "TTY driver to output user messages via printk"
- depends on EXPERT
+ depends on EXPERT && TTY
default n
---help---
If you say Y here, the support for writing user messages (i.e.
@@ -159,7 +159,7 @@ source "drivers/tty/hvc/Kconfig"
config VIRTIO_CONSOLE
tristate "Virtio console"
- depends on VIRTIO
+ depends on VIRTIO && TTY
select HVC_DRIVER
help
Virtio console for use with lguest and other hypervisors.
@@ -392,6 +392,7 @@ config XILINX_HWICAP
config R3964
tristate "Siemens R3964 line discipline"
+ depends on TTY
---help---
This driver allows synchronous communication with devices using the
Siemens R3964 packet protocol. Unless you are dealing with special
@@ -439,7 +440,7 @@ source "drivers/char/pcmcia/Kconfig"
config MWAVE
tristate "ACP Modem (Mwave) support"
- depends on X86
+ depends on X86 && TTY
select SERIAL_8250
---help---
The ACP modem (Mwave) for Linux is a WinModem. It is composed of a
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 6614416..2a166d5 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -7,7 +7,7 @@ menu "PCMCIA character devices"
config SYNCLINK_CS
tristate "SyncLink PC Card support"
- depends on PCMCIA
+ depends on PCMCIA && TTY
help
Enable support for the SyncLink PC Card serial adapter, running
asynchronous and HDLC communications up to 512Kbps. The port is
@@ -45,7 +45,7 @@ config CARDMAN_4040
config IPWIRELESS
tristate "IPWireless 3G UMTS PCMCIA card support"
- depends on PCMCIA && NETDEVICES
+ depends on PCMCIA && NETDEVICES && TTY
select PPP
help
This is a driver for 3G UMTS PCMCIA card from IPWireless company. In
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 65dd599..a2c0313 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -794,7 +794,7 @@ config I2C_PARPORT_LIGHT
config I2C_TAOS_EVM
tristate "TAOS evaluation module"
- depends on EXPERIMENTAL
+ depends on EXPERIMENTAL && TTY
select SERIO
select SERIO_SERPORT
default n
diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig
index 56eb471..055bcab 100644
--- a/drivers/input/joystick/Kconfig
+++ b/drivers/input/joystick/Kconfig
@@ -132,6 +132,8 @@ config JOYSTICK_TMDC
source "drivers/input/joystick/iforce/Kconfig"
+if TTY
+
config JOYSTICK_WARRIOR
tristate "Logitech WingMan Warrior joystick"
select SERIO
@@ -205,6 +207,8 @@ config JOYSTICK_ZHENHUA
To compile this driver as a module, choose M here: the
module will be called zhenhua.
+endif # TTY
+
config JOYSTICK_DB9
tristate "Multisystem, Sega Genesis, Saturn joysticks and gamepads"
depends on PARPORT
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index b4b65af..028cbf9 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -69,6 +69,7 @@ config KEYBOARD_ATARI
config KEYBOARD_ATKBD
tristate "AT keyboard" if EXPERT || !X86
default y
+ depends on TTY
select SERIO
select SERIO_LIBPS2
select SERIO_I8042 if X86
@@ -153,6 +154,7 @@ config KEYBOARD_BFIN
config KEYBOARD_LKKBD
tristate "DECstation/VAXstation LK201/LK401 keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you want to use a LK201 or LK401 style serial
@@ -268,7 +270,7 @@ config KEYBOARD_HIL_OLD
config KEYBOARD_HIL
tristate "HP HIL keyboard/pointer support"
- depends on GSC || HP300
+ depends on (GSC || HP300) && TTY
default y
select HP_SDC
select HIL_MLC
@@ -399,6 +401,7 @@ config KEYBOARD_IMX
config KEYBOARD_NEWTON
tristate "Newton keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you have a Newton keyboard on a serial port.
@@ -478,6 +481,8 @@ config KEYBOARD_SAMSUNG
To compile this driver as a module, choose M here: the
module will be called samsung-keypad.
+if TTY
+
config KEYBOARD_STOWAWAY
tristate "Stowaway keyboard"
select SERIO
@@ -500,6 +505,8 @@ config KEYBOARD_SUNKBD
To compile this driver as a module, choose M here: the
module will be called sunkbd.
+endif # TTY
+
config KEYBOARD_SH_KEYSC
tristate "SuperH KEYSC keypad support"
depends on SUPERH || ARCH_SHMOBILE
@@ -595,6 +602,7 @@ config KEYBOARD_TWL4030
config KEYBOARD_XTKBD
tristate "XT keyboard"
+ depends on TTY
select SERIO
help
Say Y here if you want to use the old IBM PC/XT keyboard (or
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index cd6268c..fc160f7 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -14,6 +14,7 @@ if INPUT_MOUSE
config MOUSE_PS2
tristate "PS/2 mouse"
+ depends on TTY
default y
select SERIO
select SERIO_LIBPS2
@@ -138,6 +139,7 @@ config MOUSE_PS2_OLPC
config MOUSE_SERIAL
tristate "Serial mouse"
+ depends on TTY
select SERIO
help
Say Y here if you have a serial (RS-232, COM port) mouse connected
@@ -262,6 +264,7 @@ config MOUSE_RISCPC
config MOUSE_VSXXXAA
tristate "DEC VSXXX-AA/GA mouse and VSXXX-AB tablet"
+ depends on TTY
select SERIO
help
Say Y (or M) if you want to use a DEC VSXXX-AA (hockey
diff --git a/drivers/input/serio/Kconfig b/drivers/input/serio/Kconfig
index 55f2c22..56a6163 100644
--- a/drivers/input/serio/Kconfig
+++ b/drivers/input/serio/Kconfig
@@ -4,6 +4,7 @@
config SERIO
tristate "Serial I/O support" if EXPERT || !X86
default y
+ depends on TTY
help
Say Yes here if you have any input device that uses serial I/O to
communicate with the system. This includes the
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 1ba232c..7b8d9f6 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -113,7 +113,7 @@ config TOUCHSCREEN_AUO_PIXCIR
config TOUCHSCREEN_BITSY
tristate "Compaq iPAQ H3600 (Bitsy) touchscreen"
- depends on SA1100_BITSY
+ depends on SA1100_BITSY && TTY
select SERIO
help
Say Y here if you have the h3600 (Bitsy) touchscreen.
@@ -204,6 +204,8 @@ config TOUCHSCREEN_DA9052
To compile this driver as a module, choose M here: the
module will be called da9052_tsi.
+if TTY
+
config TOUCHSCREEN_DYNAPRO
tristate "Dynapro serial touchscreen"
select SERIO
@@ -228,6 +230,8 @@ config TOUCHSCREEN_HAMPSHIRE
To compile this driver as a module, choose M here: the
module will be called hampshire.
+endif # TTY
+
config TOUCHSCREEN_EETI
tristate "EETI touchscreen panel support"
depends on I2C
@@ -249,6 +253,7 @@ config TOUCHSCREEN_EGALAX
config TOUCHSCREEN_FUJITSU
tristate "Fujitsu serial touchscreen"
+ depends on TTY
select SERIO
help
Say Y here if you have the Fujitsu touchscreen (such as one
@@ -287,6 +292,8 @@ config TOUCHSCREEN_S3C2410
To compile this driver as a module, choose M here: the
module will be called s3c2410_ts.
+if TTY
+
config TOUCHSCREEN_GUNZE
tristate "Gunze AHL-51S touchscreen"
select SERIO
@@ -323,6 +330,8 @@ config TOUCHSCREEN_WACOM_W8001
To compile this driver as a module, choose M here: the
module will be called wacom_w8001.
+endif # TTY
+
config TOUCHSCREEN_WACOM_I2C
tristate "Wacom Tablet support (I2C)"
depends on I2C
@@ -381,6 +390,8 @@ config TOUCHSCREEN_MMS114
To compile this driver as a module, choose M here: the
module will be called mms114.
+if TTY
+
config TOUCHSCREEN_MTOUCH
tristate "MicroTouch serial touchscreens"
select SERIO
@@ -405,6 +416,8 @@ config TOUCHSCREEN_INEXIO
To compile this driver as a module, choose M here: the
module will be called inexio.
+endif # TTY
+
config TOUCHSCREEN_INTEL_MID
tristate "Intel MID platform resistive touchscreen"
depends on INTEL_SCU_IPC
@@ -462,6 +475,7 @@ config TOUCHSCREEN_HTCPEN
config TOUCHSCREEN_PENMOUNT
tristate "Penmount serial touchscreen"
+ depends on TTY
select SERIO
help
Say Y here if you have a Penmount serial touchscreen connected to
@@ -505,6 +519,8 @@ config TOUCHSCREEN_TNETV107X
To compile this driver as a module, choose M here: the
module will be called tnetv107x-ts.
+if TTY
+
config TOUCHSCREEN_TOUCHRIGHT
tristate "Touchright serial touchscreen"
select SERIO
@@ -529,6 +545,8 @@ config TOUCHSCREEN_TOUCHWIN
To compile this driver as a module, choose M here: the
module will be called touchwin.
+endif # TTY
+
config TOUCHSCREEN_TI_TSCADC
tristate "TI Touchscreen Interface"
depends on ARCH_OMAP2PLUS
@@ -802,6 +820,8 @@ config TOUCHSCREEN_USB_EASYTOUCH
Say Y here if you have an EasyTouch USB Touch controller.
If unsure, say N.
+if TTY
+
config TOUCHSCREEN_TOUCHIT213
tristate "Sahara TouchIT-213 touchscreen"
select SERIO
@@ -825,6 +845,8 @@ config TOUCHSCREEN_TSC_SERIO
To compile this driver as a module, choose M here: the
module will be called tsc40.
+endif # TTY
+
config TOUCHSCREEN_TSC2005
tristate "TSC2005 based touchscreens"
depends on SPI_MASTER && GENERIC_HARDIRQS
diff --git a/drivers/isdn/Kconfig b/drivers/isdn/Kconfig
index a233ed5..37d50fc 100644
--- a/drivers/isdn/Kconfig
+++ b/drivers/isdn/Kconfig
@@ -22,6 +22,7 @@ if ISDN
menuconfig ISDN_I4L
tristate "Old ISDN4Linux (deprecated)"
+ depends on TTY
---help---
This driver allows you to use an ISDN adapter for networking
connections and as dialin/out device. The isdn-tty's have a built
diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig
index 15c3ffd..f046865 100644
--- a/drivers/isdn/capi/Kconfig
+++ b/drivers/isdn/capi/Kconfig
@@ -18,6 +18,7 @@ config CAPI_TRACE
config ISDN_CAPI_MIDDLEWARE
bool "CAPI2.0 Middleware support"
+ depends on TTY
help
This option will enhance the capabilities of the /dev/capi20
interface. It will provide a means of moving a data connection,
diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig
index b18a92c..dde5e09 100644
--- a/drivers/isdn/gigaset/Kconfig
+++ b/drivers/isdn/gigaset/Kconfig
@@ -1,5 +1,6 @@
menuconfig ISDN_DRV_GIGASET
tristate "Siemens Gigaset support"
+ depends on TTY
select CRC_CCITT
select BITREVERSE
help
diff --git a/drivers/isdn/hardware/mISDN/Kconfig b/drivers/isdn/hardware/mISDN/Kconfig
index eadc1cd..b8611e3 100644
--- a/drivers/isdn/hardware/mISDN/Kconfig
+++ b/drivers/isdn/hardware/mISDN/Kconfig
@@ -76,6 +76,7 @@ config MISDN_NETJET
tristate "Support for NETJet cards"
depends on MISDN
depends on PCI
+ depends on TTY
select MISDN_IPAC
select ISDN_HDLC
select ISDN_I4L
diff --git a/drivers/lguest/Kconfig b/drivers/lguest/Kconfig
index 34ae49d..f9c4314 100644
--- a/drivers/lguest/Kconfig
+++ b/drivers/lguest/Kconfig
@@ -1,6 +1,6 @@
config LGUEST
tristate "Linux hypervisor example code"
- depends on X86_32 && EXPERIMENTAL && EVENTFD
+ depends on X86_32 && EXPERIMENTAL && EVENTFD && TTY
select HVC_DRIVER
---help---
This is a very simple module which allows you to run
diff --git a/drivers/media/radio/wl128x/Kconfig b/drivers/media/radio/wl128x/Kconfig
index ea1e654..f359be7 100644
--- a/drivers/media/radio/wl128x/Kconfig
+++ b/drivers/media/radio/wl128x/Kconfig
@@ -4,7 +4,7 @@
menu "Texas Instruments WL128x FM driver (ST based)"
config RADIO_WL128X
tristate "Texas Instruments WL128x FM Radio"
- depends on VIDEO_V4L2 && RFKILL && GPIOLIB
+ depends on VIDEO_V4L2 && RFKILL && GPIOLIB && TTY
select TI_ST if NET
help
Choose Y here if you have this FM radio chip.
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index b151b7c..4b2bb93 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -127,7 +127,7 @@ config PHANTOM
config INTEL_MID_PTI
tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"
- depends on PCI
+ depends on PCI && TTY
default n
help
The PTI (Parallel Trace Interface) driver directs
diff --git a/drivers/misc/ti-st/Kconfig b/drivers/misc/ti-st/Kconfig
index abb5de1..f34dcc5 100644
--- a/drivers/misc/ti-st/Kconfig
+++ b/drivers/misc/ti-st/Kconfig
@@ -5,7 +5,7 @@
menu "Texas Instruments shared transport line discipline"
config TI_ST
tristate "Shared transport core driver"
- depends on NET && GPIOLIB
+ depends on NET && GPIOLIB && TTY
select FW_LOADER
help
This enables the shared transport core driver for TI
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
index 3b1f783..5562308 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -52,6 +52,7 @@ config MMC_BLOCK_BOUNCE
config SDIO_UART
tristate "SDIO UART/GPS class support"
+ depends on TTY
help
SDIO function driver for SDIO cards that implements the UART
class, as well as the GPS class which appears like a UART.
diff --git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig
index abf4d7a..60c2142 100644
--- a/drivers/net/caif/Kconfig
+++ b/drivers/net/caif/Kconfig
@@ -6,7 +6,7 @@ comment "CAIF transport drivers"
config CAIF_TTY
tristate "CAIF TTY transport driver"
- depends on CAIF
+ depends on CAIF && TTY
default n
---help---
The CAIF TTY transport driver is a Line Discipline (ldisc)
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig
index bb709fd..d5743ae 100644
--- a/drivers/net/can/Kconfig
+++ b/drivers/net/can/Kconfig
@@ -13,7 +13,7 @@ config CAN_VCAN
config CAN_SLCAN
tristate "Serial / USB serial CAN Adaptors (slcan)"
- depends on CAN
+ depends on CAN && TTY
---help---
CAN driver for several 'low cost' CAN interfaces that are attached
via serial lines or via USB-to-serial adapters using the LAWICEL
diff --git a/drivers/net/hamradio/Kconfig b/drivers/net/hamradio/Kconfig
index 95dbcfd..bf5e596 100644
--- a/drivers/net/hamradio/Kconfig
+++ b/drivers/net/hamradio/Kconfig
@@ -1,6 +1,6 @@
config MKISS
tristate "Serial port KISS driver"
- depends on AX25
+ depends on AX25 && TTY
select CRC16
---help---
KISS is a protocol used for the exchange of data between a computer
@@ -18,7 +18,7 @@ config MKISS
config 6PACK
tristate "Serial port 6PACK driver"
- depends on AX25
+ depends on AX25 && TTY
---help---
6pack is a transmission protocol for the data exchange between your
PC and your TNC (the Terminal Node Controller acts as a kind of
diff --git a/drivers/net/irda/Kconfig b/drivers/net/irda/Kconfig
index 5952054..e1454cd 100644
--- a/drivers/net/irda/Kconfig
+++ b/drivers/net/irda/Kconfig
@@ -5,7 +5,7 @@ comment "SIR device drivers"
config IRTTY_SIR
tristate "IrTTY (uses Linux serial driver)"
- depends on IRDA
+ depends on IRDA && TTY
help
Say Y here if you want to build support for the IrTTY line
discipline. To compile it as a module, choose M here: the module
diff --git a/drivers/net/ppp/Kconfig b/drivers/net/ppp/Kconfig
index 872df3e..3d9ef4f 100644
--- a/drivers/net/ppp/Kconfig
+++ b/drivers/net/ppp/Kconfig
@@ -147,6 +147,7 @@ config PPPOL2TP
Support for PPP-over-L2TP socket family. L2TP is a protocol
used by ISPs and enterprises to tunnel PPP traffic over UDP
tunnels. L2TP is replacing PPTP for VPN uses.
+if TTY
config PPP_ASYNC
tristate "PPP support for async serial ports"
@@ -172,4 +173,6 @@ config PPP_SYNC_TTY
To compile this driver as a module, choose M here.
+endif # TTY
+
endif # PPP
diff --git a/drivers/net/slip/Kconfig b/drivers/net/slip/Kconfig
index 211b160..48e6871 100644
--- a/drivers/net/slip/Kconfig
+++ b/drivers/net/slip/Kconfig
@@ -4,6 +4,7 @@
config SLIP
tristate "SLIP (serial line) support"
+ depends on TTY
---help---
Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
connect to your Internet service provider or to connect to some
diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index c1ae769..81ed3d3 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -423,7 +423,7 @@ config USB_NET_QMI_WWAN
config USB_HSO
tristate "Option USB High Speed Mobile Devices"
- depends on USB && RFKILL
+ depends on USB && RFKILL && TTY
default n
help
Choose this option if you have an Option HSDPA/HSUPA card.
@@ -471,7 +471,7 @@ config USB_SIERRA_NET
config USB_VL600
tristate "LG VL600 modem dongle"
- depends on USB_NET_CDCETHER
+ depends on USB_NET_CDCETHER && TTY
select USB_ACM
help
Select this if you want to use an LG Electronics 4G/LTE usb modem
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index d58431e..61eb899 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -429,7 +429,7 @@ config LAPBETHER
config X25_ASY
tristate "X.25 async driver (EXPERIMENTAL)"
- depends on LAPB && X25
+ depends on LAPB && X25 && TTY
---help---
Send and receive X.25 frames over regular asynchronous serial
lines such as telephone lines equipped with ordinary modems.
diff --git a/drivers/pps/clients/Kconfig b/drivers/pps/clients/Kconfig
index 445197d..6efd9b6 100644
--- a/drivers/pps/clients/Kconfig
+++ b/drivers/pps/clients/Kconfig
@@ -17,7 +17,7 @@ config PPS_CLIENT_KTIMER
config PPS_CLIENT_LDISC
tristate "PPS line discipline"
- depends on PPS
+ depends on PPS && TTY
help
If you say yes here you get support for a PPS source connected
with the CD (Carrier Detect) pin of your serial port.
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index 2c9a776..71bf959 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -11,7 +11,7 @@ config TN3270
config TN3270_TTY
def_tristate y
prompt "Support for tty input/output on 3270 terminals"
- depends on TN3270
+ depends on TN3270 && TTY
help
Include support for using an IBM 3270 terminal as a Linux tty.
@@ -33,7 +33,7 @@ config TN3270_CONSOLE
config TN3215
def_bool y
prompt "Support for 3215 line mode terminal"
- depends on CCW
+ depends on CCW && TTY
help
Include support for IBM 3215 line-mode terminals.
@@ -51,7 +51,7 @@ config CCW_CONSOLE
config SCLP_TTY
def_bool y
prompt "Support for SCLP line mode terminal"
- depends on S390
+ depends on S390 && TTY
help
Include support for IBM SCLP line-mode terminals.
@@ -66,7 +66,7 @@ config SCLP_CONSOLE
config SCLP_VT220_TTY
def_bool y
prompt "Support for SCLP VT220-compatible terminal"
- depends on S390
+ depends on S390 && TTY
help
Include support for an IBM SCLP VT220-compatible terminal.
diff --git a/drivers/staging/ccg/Kconfig b/drivers/staging/ccg/Kconfig
index 8997a8c..7ed5bc6 100644
--- a/drivers/staging/ccg/Kconfig
+++ b/drivers/staging/ccg/Kconfig
@@ -2,7 +2,7 @@ if USB_GADGET
config USB_G_CCG
tristate "Configurable Composite Gadget (STAGING)"
- depends on STAGING && BLOCK && NET && !USB_ZERO && !USB_ZERO_HNPTEST && !USB_AUDIO && !GADGET_UAC1 && !USB_ETH && !USB_ETH_RNDIS && !USB_ETH_EEM && !USB_G_NCM && !USB_GADGETFS && !USB_FUNCTIONFS && !USB_FUNCTIONFS_ETH && !USB_FUNCTIONFS_RNDIS && !USB_FUNCTIONFS_GENERIC && !USB_FILE_STORAGE && !USB_FILE_STORAGE_TEST && !USB_MASS_STORAGE && !USB_G_SERIAL && !USB_MIDI_GADGET && !USB_G_PRINTER && !USB_CDC_COMPOSITE && !USB_G_NOKIA && !USB_G_ACM_MS && !USB_G_MULTI && !USB_G_MULTI_RNDIS && !USB_G_MULTI_CDC && !USB_G_HID && !USB_G_DBGP && !USB_G_WEBCAM
+ depends on STAGING && BLOCK && NET && !USB_ZERO && !USB_ZERO_HNPTEST && !USB_AUDIO && !GADGET_UAC1 && !USB_ETH && !USB_ETH_RNDIS && !USB_ETH_EEM && !USB_G_NCM && !USB_GADGETFS && !USB_FUNCTIONFS && !USB_FUNCTIONFS_ETH && !USB_FUNCTIONFS_RNDIS && !USB_FUNCTIONFS_GENERIC && !USB_FILE_STORAGE && !USB_FILE_STORAGE_TEST && !USB_MASS_STORAGE && !USB_G_SERIAL && !USB_MIDI_GADGET && !USB_G_PRINTER && !USB_CDC_COMPOSITE && !USB_G_NOKIA && !USB_G_ACM_MS && !USB_G_MULTI && !USB_G_MULTI_RNDIS && !USB_G_MULTI_CDC && !USB_G_HID && !USB_G_DBGP && !USB_G_WEBCAM && TTY
help
The Configurable Composite Gadget supports multiple USB
functions: acm, mass storage, rndis and FunctionFS.
diff --git a/drivers/staging/dgrp/Kconfig b/drivers/staging/dgrp/Kconfig
index 39f4bb6..e4c4155 100644
--- a/drivers/staging/dgrp/Kconfig
+++ b/drivers/staging/dgrp/Kconfig
@@ -1,7 +1,7 @@
config DGRP
tristate "Digi Realport driver"
default n
- depends on SYSFS
+ depends on SYSFS && TTY
---help---
Support for Digi Realport devices. These devices allow you to
access remote serial ports as if they are local tty devices. This
diff --git a/drivers/staging/ipack/devices/Kconfig b/drivers/staging/ipack/devices/Kconfig
index 39f7188..16edbe7 100644
--- a/drivers/staging/ipack/devices/Kconfig
+++ b/drivers/staging/ipack/devices/Kconfig
@@ -1,6 +1,6 @@
config SERIAL_IPOCTAL
tristate "IndustryPack IP-OCTAL uart support"
- depends on IPACK_BUS
+ depends on IPACK_BUS && TTY
help
This driver supports the IPOCTAL serial port device for the IndustryPack bus.
default n
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index d8e05ee..f21b4b7 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -1,3 +1,14 @@
+config TTY
+ bool "Enable TTY" if EXPERT
+ default y
+ ---help---
+ Allows you to remove TTY support which can save space, and
+ blocks features that require TTY from inclusion in the kernel.
+ TTY is required for any text terminals or serial port
+ communication. Most users should leave this enabled.
+
+if TTY
+
config VT
bool "Virtual terminal" if EXPERT
depends on !S390 && !UML
@@ -387,3 +398,5 @@ config PPC_EARLY_DEBUG_EHV_BC_HANDLE
If the number you specify is not a valid byte channel handle, then
there simply will be no early console output. This is true also
if you don't boot under a hypervisor at all.
+
+endif # TTY
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 2953059..df5663d 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -1,4 +1,4 @@
-obj-y += tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o \
+obj-$(CONFIG_TTY) += tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o \
tty_buffer.o tty_port.o tty_mutex.o
obj-$(CONFIG_LEGACY_PTYS) += pty.o
obj-$(CONFIG_UNIX98_PTYS) += pty.o
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index f47b734..8902f9b 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -1,3 +1,5 @@
+if TTY
+
config HVC_DRIVER
bool
help
@@ -119,3 +121,4 @@ config HVCS
which will also be compiled when this driver is built as a
module.
+endif # TTY
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 2a53be5..76f736a 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -2,6 +2,8 @@
# Serial device configuration
#
+if TTY
+
menu "Serial drivers"
depends on HAS_IOMEM
@@ -1424,3 +1426,5 @@ config SERIAL_EFM32_UART_CONSOLE
select SERIAL_CORE_CONSOLE
endmenu
+
+endif # TTY
diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
index 2519e32..316aac8 100644
--- a/drivers/usb/class/Kconfig
+++ b/drivers/usb/class/Kconfig
@@ -6,7 +6,7 @@ comment "USB Device Class drivers"
config USB_ACM
tristate "USB Modem (CDC ACM) support"
- depends on USB
+ depends on USB && TTY
---help---
This driver supports USB modems and ISDN adapters which support the
Communication Device Class Abstract Control Model interface.
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index e0ff51b..88c4835 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -775,6 +775,7 @@ config USB_GADGET_TARGET
config USB_G_SERIAL
tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
+ depends on TTY
select USB_LIBCOMPOSITE
help
The Serial Gadget talks to the Linux-USB generic serial driver.
@@ -824,6 +825,8 @@ config USB_G_PRINTER
For more information, see Documentation/usb/gadget_printer.txt
which includes sample code for accessing the device file.
+if TTY
+
config USB_CDC_COMPOSITE
tristate "CDC Composite Device (Ethernet and ACM)"
depends on NET
@@ -904,6 +907,8 @@ config USB_G_MULTI_CDC
If unsure, say "y".
+endif # TTY
+
config USB_G_HID
tristate "HID Gadget"
select USB_LIBCOMPOSITE
@@ -920,6 +925,7 @@ config USB_G_HID
# Standalone / single function gadgets
config USB_G_DBGP
tristate "EHCI Debug Device Gadget"
+ depends on TTY
select USB_LIBCOMPOSITE
help
This gadget emulates an EHCI Debug device. This is useful when you want
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 76f4622..d8e35fe 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -4,7 +4,7 @@
menuconfig USB_SERIAL
tristate "USB Serial Converter support"
- depends on USB
+ depends on USB && TTY
---help---
Say Y here if you have a USB device that provides normal serial
ports, or acts like a serial device, and you want to connect it to
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index 99349ef..209b601 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -8,7 +8,8 @@ proc-y := nommu.o task_nommu.o
proc-$(CONFIG_MMU) := mmu.o task_mmu.o
proc-y += inode.o root.o base.o generic.o array.o \
- proc_tty.o fd.o
+ fd.0
+proc-$(CONFIG_TTY) += proc_tty.o
proc-y += cmdline.o
proc-y += consoles.o
proc-y += cpuinfo.o
diff --git a/include/linux/console.h b/include/linux/console.h
index dedb082..3b709da 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -157,7 +157,12 @@ extern int is_console_locked(void);
extern int braille_register_console(struct console *, int index,
char *console_options, char *braille_options);
extern int braille_unregister_console(struct console *);
+#ifdef CONFIG_TTY
extern void console_sysfs_notify(void);
+#else
+static inline void console_sysfs_notify(void)
+{ }
+#endif
extern bool console_suspend_enabled;
/* Suspend and resume console messages over PM events */
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 3fd2e87..c700315 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -123,7 +123,12 @@ extern void pid_ns_release_proc(struct pid_namespace *ns);
* proc_tty.c
*/
struct tty_driver;
+#ifdef CONFIG_TTY
extern void proc_tty_init(void);
+#else
+static inline void proc_tty_init(void)
+{ }
+#endif
extern void proc_tty_register_driver(struct tty_driver *driver);
extern void proc_tty_unregister_driver(struct tty_driver *driver);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index f0b4eb4..5a12c86 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -341,11 +341,43 @@ struct tty_file_private {
#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
+#ifdef CONFIG_TTY
+extern void console_init(void);
+extern void tty_kref_put(struct tty_struct *tty);
+extern struct pid *tty_get_pgrp(struct tty_struct *tty);
+extern void tty_vhangup_self(void);
+extern void disassociate_ctty(int priv);
+extern dev_t tty_devnum(struct tty_struct *tty);
+extern void proc_clear_tty(struct task_struct *p);
+extern struct tty_struct *get_current_tty(void);
+/* tty_io.c */
+extern int __init tty_init(void);
+#else
+static inline void console_init(void)
+{ }
+static inline void tty_kref_put(struct tty_struct *tty)
+{ }
+static inline struct pid *tty_get_pgrp(struct tty_struct *tty)
+{ return NULL; }
+static inline void tty_vhangup_self(void)
+{ }
+static inline void disassociate_ctty(int priv)
+{ }
+static inline dev_t tty_devnum(struct tty_struct *tty)
+{ return 0; }
+static inline void proc_clear_tty(struct task_struct *p)
+{ }
+static inline struct tty_struct *get_current_tty(void)
+{ return NULL; }
+/* tty_io.c */
+static inline int __init tty_init(void)
+{ return 0; }
+#endif
+
extern void tty_write_flush(struct tty_struct *);
extern struct ktermios tty_std_termios;
-extern void console_init(void);
extern int vcs_init(void);
extern struct class *tty_class;
@@ -365,7 +397,6 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty)
kref_get(&tty->kref);
return tty;
}
-extern void tty_kref_put(struct tty_struct *tty);
extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
const char *routine);
@@ -397,18 +428,15 @@ extern void tty_driver_remove_tty(struct tty_driver *driver,
struct tty_struct *tty);
extern void tty_free_termios(struct tty_struct *tty);
extern int is_current_pgrp_orphaned(void);
-extern struct pid *tty_get_pgrp(struct tty_struct *tty);
extern int is_ignored(int sig);
extern int tty_signal(int sig, struct tty_struct *tty);
extern void tty_hangup(struct tty_struct *tty);
extern void tty_vhangup(struct tty_struct *tty);
extern void tty_vhangup_locked(struct tty_struct *tty);
-extern void tty_vhangup_self(void);
extern void tty_unhangup(struct file *filp);
extern int tty_hung_up_p(struct file *filp);
extern void do_SAK(struct tty_struct *tty);
extern void __do_SAK(struct tty_struct *tty);
-extern void disassociate_ctty(int priv);
extern void no_tty(void);
extern void tty_flip_buffer_push(struct tty_struct *tty);
extern void tty_flush_to_ldisc(struct tty_struct *tty);
@@ -439,9 +467,6 @@ extern long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
-extern dev_t tty_devnum(struct tty_struct *tty);
-extern void proc_clear_tty(struct task_struct *p);
-extern struct tty_struct *get_current_tty(void);
extern void tty_default_fops(struct file_operations *fops);
extern struct tty_struct *alloc_tty_struct(void);
extern int tty_alloc_file(struct file *file);
@@ -566,9 +591,6 @@ static inline int tty_audit_push_task(struct task_struct *tsk,
}
#endif
-/* tty_io.c */
-extern int __init tty_init(void);
-
/* tty_ioctl.c */
extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb
index 43cb93f..30894fa 100644
--- a/lib/Kconfig.kgdb
+++ b/lib/Kconfig.kgdb
@@ -22,6 +22,7 @@ config KGDB_SERIAL_CONSOLE
tristate "KGDB: use kgdb over the serial console"
select CONSOLE_POLL
select MAGIC_SYSRQ
+ depends on TTY
default y
help
Share a serial console with kgdb. Sysrq-g must be used
diff --git a/net/bluetooth/rfcomm/Kconfig b/net/bluetooth/rfcomm/Kconfig
index 22e718b..18d352e 100644
--- a/net/bluetooth/rfcomm/Kconfig
+++ b/net/bluetooth/rfcomm/Kconfig
@@ -12,6 +12,7 @@ config BT_RFCOMM
config BT_RFCOMM_TTY
bool "RFCOMM TTY support"
depends on BT_RFCOMM
+ depends on TTY
help
This option enables TTY emulation support for RFCOMM channels.
diff --git a/net/irda/ircomm/Kconfig b/net/irda/ircomm/Kconfig
index 2d4c6b4..19492c1 100644
--- a/net/irda/ircomm/Kconfig
+++ b/net/irda/ircomm/Kconfig
@@ -1,6 +1,6 @@
config IRCOMM
tristate "IrCOMM protocol"
- depends on IRDA
+ depends on IRDA && TTY
help
Say Y here if you want to build support for the IrCOMM protocol.
To compile it as modules, choose M here: the modules will be
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index b92759a..93303b1 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -34,7 +34,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_CS42L73 if I2C
select SND_SOC_CS4270 if I2C
select SND_SOC_CS4271 if SND_SOC_I2C_AND_SPI
- select SND_SOC_CX20442
+ select SND_SOC_CX20442 if TTY
select SND_SOC_DA7210 if I2C
select SND_SOC_DA732X if I2C
select SND_SOC_DA9055 if I2C
@@ -227,6 +227,7 @@ config SND_SOC_CS4271
config SND_SOC_CX20442
tristate
+ depends on TTY
config SND_SOC_JZ4740_CODEC
tristate
--
1.7.9.5
--
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