linux-stable.git/drivers/tty/Kconfig, branch v6.4

Merge tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2023-04-27T19:07:50+00:00

Pull char/misc drivers updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystems for
  6.4-rc1.

  It's pretty big, but due to the removal of pcmcia drivers, almost
  breaks even for number of lines added vs. removed, a nice change.

  Included in here are:

   - removal of unused PCMCIA drivers (finally!)

   - Interconnect driver updates and additions

   - Lots of IIO driver updates and additions

   - MHI driver updates

   - Coresight driver updates

   - NVMEM driver updates, which required some OF updates

   - W1 driver updates and a new maintainer to manage the subsystem

   - FPGA driver updates

   - New driver subsystem, CDX, for AMD systems

   - lots of other small driver updates and additions

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

* tag 'char-misc-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (196 commits)
  mcb-lpc: Reallocate memory region to avoid memory overlapping
  mcb-pci: Reallocate memory region to avoid memory overlapping
  mcb: Return actual parsed size when reading chameleon table
  kernel/configs: Drop Android config fragments
  virt: acrn: Replace obsolete memalign() with posix_memalign()
  spmi: Add a check for remove callback when removing a SPMI driver
  spmi: fix W=1 kernel-doc warnings
  spmi: mtk-pmif: Drop of_match_ptr for ID table
  spmi: pmic-arb: Convert to platform remove callback returning void
  spmi: mtk-pmif: Convert to platform remove callback returning void
  spmi: hisi-spmi-controller: Convert to platform remove callback returning void
  w1: gpio: remove unnecessary ENOMEM messages
  w1: omap-hdq: remove unnecessary ENOMEM messages
  w1: omap-hdq: add SPDX tag
  w1: omap-hdq: allow compile testing
  w1: matrox: remove unnecessary ENOMEM messages
  w1: matrox: use inline over __inline__
  w1: matrox: switch from asm to linux header
  w1: ds2482: do not use assignment in if condition
  w1: ds2482: drop unnecessary header
  ...

tty: Fix typo in LEGACY_TIOCSTI Kconfig description

2023-04-05T17:36:00+00:00

Fix typo in LEGACY_TIOCSTI Kconfig description

There is a stray ' in the description before the Y. It appears this was
meant as a quote for the 'Y'. However, it is more common to use
unquoted Y in Kconfig descriptions.

Signed-off-by: Hanno Böck 
Link: https://lore.kernel.org/r/20230330213557.60cf1533.hanno@hboeck.de
Signed-off-by: Greg Kroah-Hartman

tty: ipwireless: move Kconfig entry to tty

2023-03-09T16:30:27+00:00

The ipwireless' Kconfig entry is currently sitting in char/pcmcia. But
the driver is in tty/. So move the entry to tty/ too.

First, it makes sense to have the entry along the driver. Second, whole
char/pcmcia is about to pass away.

Signed-off-by: Jiri Slaby (SUSE) 
Cc: Jiri Kosina 
Cc: David Sterba 
Cc: Arnd Bergmann 
Cc: Greg Kroah-Hartman 
Acked-by: David Sterba 
Link: https://lore.kernel.org/r/20230222092302.6348-1-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman

tty: Allow TIOCSTI to be disabled

2022-11-03T00:58:03+00:00

TIOCSTI continues its long history of being used in privilege escalation
attacks[1]. Prior attempts to provide a mechanism to disable this have
devolved into discussions around creating full-blown LSMs to provide
arbitrary ioctl filtering, which is hugely over-engineered -- only
TIOCSTI is being used this way. 3 years ago OpenBSD entirely removed
TIOCSTI[2], Android has had it filtered for longer[3], and the tools that
had historically used TIOCSTI either do not need it, are not commonly
built with it, or have had its use removed.

Provide a simple CONFIG and global sysctl to disable this for the system
builders who have wanted this functionality for literally decades now,
much like the ldisc_autoload CONFIG and sysctl.

[1] https://lore.kernel.org/linux-hardening/Y0m9l52AKmw6Yxi1@hostpad
[2] https://undeadly.org/cgi?action=article;sid=20170701132619
[3] https://lore.kernel.org/lkml/CAFJ0LnFGRuEEn1tCLhoki8ZyWrKfktbF+rwwN7WzyC_kBFoQVA@mail.gmail.com/

Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: Simon Brand 
Signed-off-by: Kees Cook 
Link: https://lore.kernel.org/r/20221022182949.2684794-2-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman

tty: add rpmsg driver

2021-10-21T10:35:35+00:00

This driver exposes a standard TTY interface on top of the rpmsg
framework through a rpmsg service.

This driver supports multi-instances, offering a /dev/ttyRPMSGx entry
per rpmsg endpoint.

Reviewed-by: Mathieu Poirier 
Signed-off-by: Arnaud Pouliquen 
Link: https://lore.kernel.org/r/20211015094701.5732-3-arnaud.pouliquen@foss.st.com
Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2021-07-09T17:19:13+00:00

Pull UML updates from Richard Weinberger:

 - Support for optimized routines based on the host CPU

 - Support for PCI via virtio

 - Various fixes

* tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: remove unneeded semicolon in um_arch.c
  um: Remove the repeated declaration
  um: fix error return code in winch_tramp()
  um: fix error return code in slip_open()
  um: Fix stack pointer alignment
  um: implement flush_cache_vmap/flush_cache_vunmap
  um: add a UML specific futex implementation
  um: enable the use of optimized xor routines in UML
  um: Add support for host CPU flags and alignment
  um: allow not setting extra rpaths in the linux binary
  um: virtio/pci: enable suspend/resume
  um: add PCI over virtio emulation driver
  um: irqs: allow invoking time-travel handler multiple times
  um: time-travel/signals: fix ndelay() in interrupt
  um: expose time-travel mode to userspace side
  um: export signals_enabled directly
  um: remove unused smp_sigio_handler() declaration
  lib: add iomem emulation (logic_iomem)
  um: allow disabling NO_IOMEM

mxser: drop ISA support

2021-06-18T11:09:58+00:00

While mxser PCI cards are still around and produced (Moxa provided me
with two recently), ISA cards are obsolete for a long time. I haven't
seen anyone using the cards and the ISA code paths are barely tested.

Hence, remove ISA support from mxser driver so that we can clean the
driver up.

Signed-off-by: Jiri Slaby 
Link: https://lore.kernel.org/r/20210618061516.662-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman

um: allow disabling NO_IOMEM

2021-06-17T19:44:50+00:00

Adjust the kconfig a little to allow disabling NO_IOMEM in UML. To
make an "allyesconfig" with CONFIG_NO_IOMEM=n build, adjust a few
Kconfig things elsewhere and add dummy asm/fb.h and asm/vga.h files.

Signed-off-by: Johannes Berg 
Signed-off-by: Richard Weinberger

tty: pti: Remove Kconfig leftovers

2021-04-09T15:00:32+00:00

The commit 8ba59e9dee31 ("misc: pti: Remove driver for deprecated platform")
got rid of deprecated drivers under TTY subsystem, but cleaned only one Kconfig
entry. Remove Kconfig leftovers.

Fixes: 8ba59e9dee31 ("misc: pti: Remove driver for deprecated platform")
Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20210406131615.85432-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

tty: rocket, remove the driver

2021-03-10T08:34:06+00:00

While the driver is still marked as maintained in MAINTAINERS, Comtrol
does not really care about this ancient driver. They are still
manufacturing serial devices, but those are controlled only by
out-of-tree drivers.

Comtrol didn't answer my pings, so this driver is apparently
unmaintained.  Aside from that, the driver was untouched for years, only
whole-tree changes happened during the past years. The driver needs much
more care, so drop it for now. If someone steps up to reintroduce it,
they need to clean it up first.

Signed-off-by: Jiri Slaby 
Link: https://lore.kernel.org/r/20210302062214.29627-7-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman