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tty: reorganize tty & serial menus
Move LDISC_AUTOLOAD ahead of the Serial drivers menu. Move the Serial drivers menu ahead of the Non-standard serial port support menu. Move NOZOMI out of the SERIAL_NONSTANDARD area since it does not depend on SERIAL_NONSTANDARD and it breaks the SERIAL_NONSTANDARD menu list. Alphabetize the remaining drivers (in tty/Kconfig) by their prompt strings. [The drivers in tty/hvc/Kconfig and tty/serial/Kconfig have not been alphabetized.] Cc: Jiri Slaby <jslaby@suse.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20200311225736.32147-4-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Randy Dunlap
Greg Kroah-Hartman
parent
00e3754397
commit
2cca608ad9
1 changed files with 86 additions and 87 deletions
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@ -137,7 +137,6 @@ config LEGACY_PTYS
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security. This option enables these legacy devices; on most
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systems, it is safe to say N.
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config LEGACY_PTY_COUNT
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int "Maximum number of legacy PTY in use"
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depends on LEGACY_PTYS
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@ -151,6 +150,31 @@ config LEGACY_PTY_COUNT
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When not in use, each legacy PTY occupies 12 bytes on 32-bit
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architectures and 24 bytes on 64-bit architectures.
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config LDISC_AUTOLOAD
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bool "Automatically load TTY Line Disciplines"
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default y
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help
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Historically the kernel has always automatically loaded any
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line discipline that is in a kernel module when a user asks
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for it to be loaded with the TIOCSETD ioctl, or through other
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means. This is not always the best thing to do on systems
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where you know you will not be using some of the more
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"ancient" line disciplines, so prevent the kernel from doing
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this unless the request is coming from a process with the
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CAP_SYS_MODULE permissions.
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Say 'Y' here if you trust your userspace users to do the right
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thing, or if you have only provided the line disciplines that
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you know you will be using, or if you wish to continue to use
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the traditional method of on-demand loading of these modules
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by any user.
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This functionality can be changed at runtime with the
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dev.tty.ldisc_autoload sysctl, this configuration option will
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only set the default value of this functionality.
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source "drivers/tty/serial/Kconfig"
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config SERIAL_NONSTANDARD
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bool "Non-standard serial port support"
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depends on HAS_IOMEM
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@ -270,16 +294,6 @@ config SYNCLINK_GT
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synchronous and asynchronous serial adapters
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manufactured by Microgate Systems, Ltd. (www.microgate.com)
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config NOZOMI
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tristate "HSDPA Broadband Wireless Data Card - Globe Trotter"
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depends on PCI
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help
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If you have a HSDPA driver Broadband Wireless Data Card -
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Globe Trotter PCMCIA card, say Y here.
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To compile this driver as a module, choose M here, the module
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will be called nozomi.
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config ISI
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tristate "Multi-Tech multiport card support"
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depends on SERIAL_NONSTANDARD && PCI
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@ -302,43 +316,6 @@ config N_HDLC
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The module will be called n_hdlc. If you want to do that, say M
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here.
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config N_GSM
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tristate "GSM MUX line discipline support (EXPERIMENTAL)"
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depends on NET
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help
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This line discipline provides support for the GSM MUX protocol and
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presents the mux as a set of 61 individual tty devices.
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config TRACE_ROUTER
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tristate "Trace data router for MIPI P1149.7 cJTAG standard"
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depends on TRACE_SINK
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help
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The trace router uses the Linux tty line discipline framework to
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route trace data coming from a tty port (say UART for example) to
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the trace sink line discipline driver and to another tty port (say
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USB). This is part of a solution for the MIPI P1149.7, compact JTAG,
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standard, which is for debugging mobile devices. The PTI driver in
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drivers/misc/pti.c defines the majority of this MIPI solution.
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You should select this driver if the target kernel is meant for
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a mobile device containing a modem. Then you will need to select
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"Trace data sink for MIPI P1149.7 cJTAG standard" line discipline
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driver.
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config TRACE_SINK
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tristate "Trace data sink for MIPI P1149.7 cJTAG standard"
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help
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The trace sink uses the Linux line discipline framework to receive
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trace data coming from the trace router line discipline driver
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to a user-defined tty port target, like USB.
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This is to provide a way to extract modem trace data on
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devices that do not have a PTI HW module, or just need modem
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trace data to come out of a different HW output port.
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This is part of a solution for the P1149.7, compact JTAG, standard.
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If you select this option, you need to select
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"Trace data router for MIPI P1149.7 cJTAG standard".
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config PPC_EPAPR_HV_BYTECHAN
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bool "ePAPR hypervisor byte channel driver"
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depends on PPC
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@ -374,20 +351,6 @@ config PPC_EARLY_DEBUG_EHV_BC_HANDLE
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there simply will be no early console output. This is true also
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if you don't boot under a hypervisor at all.
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config NULL_TTY
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tristate "NULL TTY driver"
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help
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Say Y here if you want a NULL TTY which simply discards messages.
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This is useful to allow userspace applications which expect a console
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device to work without modifications even when no console is
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available or desired.
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In order to use this driver, you should redirect the console to this
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TTY, or boot the kernel with console=ttynull.
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If unsure, say N.
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config GOLDFISH_TTY
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tristate "Goldfish TTY Driver"
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depends on GOLDFISH
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@ -401,6 +364,23 @@ config GOLDFISH_TTY_EARLY_CONSOLE
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default y if GOLDFISH_TTY=y
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select SERIAL_EARLYCON
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config N_GSM
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tristate "GSM MUX line discipline support (EXPERIMENTAL)"
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depends on NET
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help
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This line discipline provides support for the GSM MUX protocol and
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presents the mux as a set of 61 individual tty devices.
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config NOZOMI
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tristate "HSDPA Broadband Wireless Data Card - Globe Trotter"
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depends on PCI
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help
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If you have a HSDPA driver Broadband Wireless Data Card -
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Globe Trotter PCMCIA card, say Y here.
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To compile this driver as a module, choose M here, the module
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will be called nozomi.
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config MIPS_EJTAG_FDC_TTY
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bool "MIPS EJTAG Fast Debug Channel TTY"
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depends on MIPS_CDMM
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@ -448,39 +428,58 @@ config MIPS_EJTAG_FDC_KGDB_CHAN
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help
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FDC channel number to use for KGDB.
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config NULL_TTY
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tristate "NULL TTY driver"
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help
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Say Y here if you want a NULL TTY which simply discards messages.
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This is useful to allow userspace applications which expect a console
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device to work without modifications even when no console is
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available or desired.
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In order to use this driver, you should redirect the console to this
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TTY, or boot the kernel with console=ttynull.
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If unsure, say N.
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config TRACE_ROUTER
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tristate "Trace data router for MIPI P1149.7 cJTAG standard"
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depends on TRACE_SINK
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help
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The trace router uses the Linux tty line discipline framework to
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route trace data coming from a tty port (say UART for example) to
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the trace sink line discipline driver and to another tty port (say
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USB). This is part of a solution for the MIPI P1149.7, compact JTAG,
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standard, which is for debugging mobile devices. The PTI driver in
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drivers/misc/pti.c defines the majority of this MIPI solution.
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You should select this driver if the target kernel is meant for
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a mobile device containing a modem. Then you will need to select
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"Trace data sink for MIPI P1149.7 cJTAG standard" line discipline
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driver.
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config TRACE_SINK
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tristate "Trace data sink for MIPI P1149.7 cJTAG standard"
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help
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The trace sink uses the Linux line discipline framework to receive
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trace data coming from the trace router line discipline driver
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to a user-defined tty port target, like USB.
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This is to provide a way to extract modem trace data on
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devices that do not have a PTI HW module, or just need modem
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trace data to come out of a different HW output port.
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This is part of a solution for the P1149.7, compact JTAG, standard.
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If you select this option, you need to select
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"Trace data router for MIPI P1149.7 cJTAG standard".
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config VCC
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tristate "Sun Virtual Console Concentrator"
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depends on SUN_LDOMS
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help
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Support for Sun logical domain consoles.
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config LDISC_AUTOLOAD
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bool "Automatically load TTY Line Disciplines"
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default y
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help
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Historically the kernel has always automatically loaded any
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line discipline that is in a kernel module when a user asks
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for it to be loaded with the TIOCSETD ioctl, or through other
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means. This is not always the best thing to do on systems
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where you know you will not be using some of the more
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"ancient" line disciplines, so prevent the kernel from doing
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this unless the request is coming from a process with the
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CAP_SYS_MODULE permissions.
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Say 'Y' here if you trust your userspace users to do the right
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thing, or if you have only provided the line disciplines that
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you know you will be using, or if you wish to continue to use
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the traditional method of on-demand loading of these modules
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by any user.
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This functionality can be changed at runtime with the
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dev.tty.ldisc_autoload sysctl, this configuration option will
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only set the default value of this functionality.
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source "drivers/tty/hvc/Kconfig"
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source "drivers/tty/serial/Kconfig"
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endif # TTY
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source "drivers/tty/serdev/Kconfig"
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