kernel/linux.git/drivers/char/Kconfig, branch v4.11.5

Merge tag 'tty-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2017-02-22T20:17:25+00:00

Pull tty/serial driver updates from Greg KH: "Here is the big tty/serial driver patchset for 4.11-rc1. Not much here, but a lot of little fixes and individual serial driver updates all over the subsystem. Majority are for the sh-sci driver and platform (the arch-specific changes have acks from the maintainer). The start of the "serial bus" code is here as well, but nothing is converted to use it yet. That work is still ongoing, hopefully will start to show up across different subsystems for 4.12 (bluetooth is one major place that will be used.) All of these have been in linux-next for a while with no reported issues" * tag 'tty-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (109 commits) tty: pl011: Work around QDF2400 E44 stuck BUSY bit atmel_serial: Use the fractional divider when possible tty: Remove extra include in HVC console tty framework serial: exar: Enable MSI support serial: exar: Move register defines from uapi header to consumer site serial: pci: Remove unused pci_boards entries serial: exar: Move Commtech adapters to 8250_exar as well serial: exar: Fix feature control register constants serial: exar: Fix initialization of EXAR registers for ports > 0 serial: exar: Fix mapping of port I/O resources serial: sh-sci: fix hardware RX trigger level setting tty/serial: atmel: ensure state is restored after suspending serial: 8250_dw: Avoid "too much work" from bogus rx timeout interrupt serdev: ttyport: check whether tty_init_dev() fails serial: 8250_pci: make pciserial_detach_ports() static ARM: dts: STiH410-b2260: Enable HW flow-control ARM: dts: STiH407-family: Use new Pinctrl groups ARM: dts: STiH407-pinctrl: Add Pinctrl group for HW flow-control ARM: dts: STiH410-b2260: Identify the UART RTS line dt-bindings: serial: Update 'uart-has-rtscts' description ...

serdev: Introduce new bus for serial attached devices

2017-02-03T09:17:02+00:00

The serdev bus is designed for devices such as Bluetooth, WiFi, GPS and NFC connected to UARTs on host processors. Tradionally these have been handled with tty line disciplines, rfkill, and userspace glue such as hciattach. This approach has many drawbacks since it doesn't fit into the Linux driver model. Handling of sideband signals, power control and firmware loading are the main issues. This creates a serdev bus with controllers (i.e. host serial ports) and attached devices. Typically, these are point to point connections, but some devices have muxing protocols or a h/w mux is conceivable. Any muxing is not yet supported with the serdev bus. Signed-off-by: Rob Herring Reviewed-By: Sebastian Reichel Tested-By: Sebastian Reichel Signed-off-by: Greg Kroah-Hartman

char: lack of bool string made CONFIG_DEVPORT always on

2017-01-11T07:28:52+00:00

Without a bool string present, using "# CONFIG_DEVPORT is not set" in defconfig files would not actually unset devport. This esnured that /dev/port was always on, but there are reasons a user may wish to disable it (smaller kernel, attack surface reduction) if it's not being used. Adding a message here in order to make this user visible. Signed-off-by: Max Bires Acked-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2016-12-13T20:11:01+00:00

Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver patches for 4.10-rc1. Lots of tiny changes over lots of "minor" driver subsystems, the largest being some new FPGA drivers. Other than that, a few other new drivers, but no new driver subsystems added for this kernel cycle, a nice change. All of these have been in linux-next with no reported issues" * tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (107 commits) uio-hv-generic: store physical addresses instead of virtual Tools: hv: kvp: configurable external scripts path uio-hv-generic: new userspace i/o driver for VMBus vmbus: add support for dynamic device id's hv: change clockevents unbind tactics hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels() hyperv: Fix spelling of HV_UNKOWN mei: bus: enable non-blocking RX mei: fix the back to back interrupt handling mei: synchronize irq before initiating a reset. VME: Remove shutdown entry from vme_driver auxdisplay: ht16k33: select framebuffer helper modules MAINTAINERS: add git url for fpga fpga: Clarify how write_init works streaming modes fpga zynq: Fix incorrect ISR state on bootup fpga zynq: Remove priv->dev fpga zynq: Add missing \n to messages fpga: Add COMPILE_TEST to all drivers uio: pruss: add clk_disable() char/pcmcia: add some error checking in scr24x_read() ...

posix-timers: Make them configurable

2016-11-16T08:26:35+00:00

Some embedded systems have no use for them. This removes about 25KB from the kernel binary size when configured out. Corresponding syscalls are routed to a stub logging the attempt to use those syscalls which should be enough of a clue if they were disabled without proper consideration. They are: timer_create, timer_gettime: timer_getoverrun, timer_settime, timer_delete, clock_adjtime, setitimer, getitimer, alarm. The clock_settime, clock_gettime, clock_getres and clock_nanosleep syscalls are replaced by simple wrappers compatible with CLOCK_REALTIME, CLOCK_MONOTONIC and CLOCK_BOOTTIME only which should cover the vast majority of use cases with very little code. Signed-off-by: Nicolas Pitre Acked-by: Richard Cochran Acked-by: Thomas Gleixner Acked-by: John Stultz Reviewed-by: Josh Triplett Cc: Paul Bolle Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Michal Marek Cc: Edward Cree Link: http://lkml.kernel.org/r/1478841010-28605-7-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner

tile-srom: allow the driver to be built as a module

2016-11-10T14:18:56+00:00

The code was already configured that way, but the Kconfig file didn't support requesting it. A buglet caused a null pointer deref when unloading the module, but this commit also corrects that issue. Signed-off-by: Chris Metcalf Signed-off-by: Greg Kroah-Hartman

Move CONFIG_DEVKMEM default to n

2016-10-28T12:23:03+00:00

Kconfig comment suggests setting it as "n" if in doubt thus move the default value to 'n'. Signed-off-by: Dave Young Suggested-by: Kees Cook Signed-off-by: Greg Kroah-Hartman

Merge tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2016-08-05T13:48:22+00:00

Pull RTC updates from Alexandre Belloni: "RTC for 4.8 Cleanups: - huge cleanup of rtc-generic and char/genrtc this allowed to cleanup rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc - move mn10300 to rtc-cmos Subsystem: - fix wakealarms after hibernate - multiples fixes for rctest - simplify implementations of .read_alarm New drivers: - Maxim MAX6916 Drivers: - ds1307: fix weekday - m41t80: add wakeup support - pcf85063: add support for PCF85063A variant - rv8803: extend i2c fix and other fixes - s35390a: fix alarm reading, this fixes instant reboot after shutdown for QNAP TS-41x - s3c: clock fixes" * tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits) rtc: rv8803: Clear V1F when setting the time rtc: rv8803: Stop the clock while setting the time rtc: rv8803: Always apply the I²C workaround rtc: rv8803: Fix read day of week rtc: rv8803: Remove the check for valid time rtc: rv8803: Kconfig: Indicate rx8900 support rtc: asm9260: remove .owner field for driver rtc: at91sam9: Fix missing spin_lock_init() rtc: m41t80: add suspend handlers for alarm IRQ rtc: m41t80: make it a real error message rtc: pcf85063: Add support for the PCF85063A device rtc: pcf85063: fix year range rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy rtc: explicitly set tm_sec = 0 for drivers with minute accurancy rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq() rtc: s3c: Remove unnecessary call to disable already disabled clock rtc: abx80x: use devm_add_action_or_reset() rtc: m41t80: use devm_add_action_or_reset() rtc: fix a typo and reduce three empty lines to one rtc: s35390a: improve two comments in .set_alarm ...

powerpc/powernv: Add driver for operator panel on FSP machines

2016-06-29T07:33:46+00:00

Implement new character device driver to allow access from user space to the operator panel display present on IBM Power Systems machines with FSPs. This will allow status information to be presented on the display which is visible to a user. The driver implements a character buffer which a user can read/write by accessing the device (/dev/op_panel). This buffer is then displayed on the operator panel display. Any attempt to write past the last character position will have no effect and attempts to write more characters than the size of the display will be truncated. The device may only be accessed by a single process at a time. Signed-off-by: Suraj Jitindar Singh Reviewed-by: Andrew Donnellan Signed-off-by: Michael Ellerman

mn10300: use RTC_DRV_CMOS instead of CONFIG_RTC

2016-06-25T23:20:08+00:00

nn10300 has a dependency on mc146818_get_time/mc146818_set_time, which we want to move from the mc146818rtc.h header into the rtc subsystem, which in turn is not usable on mn10300. This changes mn10300 to use the modern rtc-cmos driver instead of the old RTC driver, and that in turn lets us completely remove the read_persistent_clock/update_persistent_clock callbacks. Signed-off-by: Arnd Bergmann Signed-off-by: Alexandre Belloni