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Subject[GIT PULL] TTY/Serial driver patches for 5.7-rc1
The following changes since commit 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e:

Linux 5.6-rc7 (2020-03-22 18:31:56 -0700)

are available in the Git repository at:

git:// tags/tty-5.7-rc1

for you to fetch changes up to 8d5b305484e8a3216eeb700ed6c6de870306adbd:

serial: 8250: Optimize irq enable after console write (2020-03-27 15:45:54 +0100)

TTY/Serial patches for 5.7-rc1

Here is the big set of TTY / Serial patches for 5.7-rc1

Lots of console fixups and reworking in here, serial core tweaks
(doesn't that ever get old, why are we still creating new serial
devices?), serial driver updates, line-protocol driver updates, and some
vt cleanups and fixes included in here as well.

All have been in linux-next with no reported issues.

Signed-off-by: Greg Kroah-Hartman <>

Alexandre Belloni (2):
tty: serial: efm32: fix spelling mistake "reserverd" -> "reserved"
tty: nozomi: fix spelling mistake "reserverd" -> "reserved"

Andy Shevchenko (24):
kgdboc: Use for_each_console() helper
console: Don't perform test for CON_BRL flag
console: Drop double check for console_drivers being non-NULL
console: Use for_each_console() helper in unregister_console()
console: Drop misleading comment
console: Avoid positive return code from unregister_console()
console: Don't notify user space when unregister non-listed console
console: Introduce ->exit() callback
serial: core: Introduce uart_console_enabled() helper
serial: core: Consolidate spin lock initialization code
serial: core: use octal permissions on module param
serial: core: Switch to use DEVICE_ATTR_RO()
serial: 8250_port: Switch to use DEVICE_ATTR_RW()
serial: 8250_port: Use dev_*() instead of pr_*()
serial: 8250_lpss: Add ->setup() for Elkhart Lake ports
serial: pic32_uart: Use uart_console() helper
tty/serial: atmel: Use uart_console() helper
serial: core: Use string length for SysRq magic sequence
serial: core: Print escaped SysRq Magic sequence if enabled
serial: core: Use uart_console() helper in SysRq code
serial: core: Refactor uart_unlock_and_check_sysrq()
serial: core: Allow detach and attach serial device for console
serial: 8250_port: Don't use power management for kernel console
serial: 8250_port: Disable DMA operations for kernel console

Changqi Hu (1):
serial: 8250-mtk: modify mtk uart power and clock management

Christophe JAILLET (1):
tty: serial: Kconfig: Fix a typo

Chunyan Zhang (7):
arm64: change ARCH_SPRD Kconfig to tristate
tty: serial: make SERIAL_SPRD not depend on ARCH_SPRD
serial: sprd: check console via stdout-path in addition
serial: sprd: remove __init from sprd_console_setup
serial: sprd: getting port index via serial aliases only
serial: sprd: remove redundant sprd_port cleanup
tty: serial: make SERIAL_SPRD depend on COMMON_CLK

Daniel Golle (1):
serial: ar933x_uart: add RS485 support

Dmitry Safonov (3):
sysctl/sysrq: Remove __sysrq_enabled copy
serial/sysrq: Add a help-string for MAGIC_SYSRQ_SERIAL_SEQUENCE

Douglas Anderson (2):
tty: serial: qcom_geni_serial: No need to stop tx/rx on UART shutdown
tty: serial: qcom_geni_serial: Don't try to manually disable the console

Eric Biggers (4):
vt: drop redundant might_sleep() in do_con_write()
vt: vt_ioctl: remove unnecessary console allocation checks
vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
vt: vt_ioctl: fix use-after-free in vt_in_use()

Geert Uytterhoeven (1):
Revert "tty: serial: samsung_tty: build it for any platform"

George Hilliard (2):
dt-bindings: serial: document fsl,inverted-tx and -rx options
tty: imx serial: Implement support for reversing TX and RX polarity

Greg Kroah-Hartman (6):
tty: serial: samsung_tty: build it for any platform
tty: serial: samsung_tty: remove SERIAL_SAMSUNG_DEBUG
Merge 5.6-rc3 into tty-next
Merge 5.6-rc5 into tty-next
Merge branch 'for-5.7-console-exit' of git:// into tty-next
Merge 5.6-rc7 into tty-next

Gustavo A. R. Silva (4):
tty/serial: 8250_exar: Replace zero-length array with flexible-array member
tty: n_gsm: Replace zero-length array with flexible-array member
serial: sc16is7xx: Replace zero-length array with flexible-array member
serial: 8250_pci: Replace zero-length array with flexible-array member

Jeff Brasen (1):
serial: 8250_tegra: Create Tegra specific 8250 driver

Jiri Slaby (49):
n_tty: check printk arguments for n_tty_trace
n_gsm: drop unneeded gsm_dlci->fifo field
n_gsm: introduce enum gsm_dlci_state
n_gsm: introduce enum gsm_dlci_mode
n_gsm: introduce enum gsm_mux_state
n_gsm: add missing __user annotations
n_gsm: add missing \n to prints
n_gsm: switch dead to bool
n_gsm: switch throttled to bool
n_gsm: switch constipated to bool
n_gsm: switch escape to bool
n_hdlc: remove tracing debug prints
n_hdlc: remove unused macros
n_hdlc: convert debuglevel use to pr_debug
n_hdlc: put init/exit strings directly to prints
n_hdlc: cleanup messages during registration
n_hdlc: use clamp() for maxframe
n_hdlc: simplify freeing of buffer list
n_hdlc: invert conditions in n_hdlc_tty_close and n_hdlc_tty_poll
n_hdlc: remove unused flags
n_hdlc: remove unused backup_tty
n_hdlc: expand tty2n_hdlc macro
n_hdlc: inline n_hdlc_release
n_hdlc: remove cached tty
n_hdlc: remove checking of n_hdlc
n_hdlc: add helper for buffers allocation
n_hdlc: move tty_ldisc_ops to the bottom
n_hdlc: switch tbusy and woke_up to bools
n_hdlc: remove unneeded ifdef
n_hdlc: use __func__ and pr_ print helpers
n_hdlc: remove useless whitespace at line wraps
n_hdlc: remove spaces between function name and (
n_hdlc: add missing spaces after commas
n_hdlc: fix whitespace around binary operators
n_hdlc: wrap a comment properly
vt: selection, introduce vc_is_sel
vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
vt: selection, remove 2 local variables from set_selection_kernel
vt: selection, localize use_unicode
vt: selection, create struct from console selection globals
vt: switch vt_dont_switch to bool
vt: vt_kern.h, remove extern from functions
vt: selection, remove redeclaration of poke_blanked_console
vt: selection, indent switch-case properly
vt: selection, fix double lock introduced by a merge
tty: n_hdlc, remove FILE and LINE from pr_debug
vt: use min() to limit intervals
vt: selection, use rounddown() for start/endline computation
vt: indent switch-case in setterm_command properly

Kees Cook (1):
n_tty: Distribute switch variables for initialization

Lanqing Liu (1):
serial: sprd: Fix a dereference warning

Linus Walleij (5):
tty: serial: atmel_serial: Drop GPIO includes
tty: serial: lantiq: Drop GPIO include
tty: serial: cpm_uart: Convert to use GPIO descriptors
tty: serial: ifx6x60: Use helper variable for dev
tty: serial: ifx6x60: Convert to GPIO descriptors

Lubomir Rintel (8):
serial: 8250_pxa: avoid autodetecting the port type
ARM: dts: pxa*: Don't redeclare phandle references
ARM: dts: pxa*: Fix serial port names
ARM: dts: pxa*: Make the serial ports compatible with xscale-uart
ARM: dts: mmp2-brownstone: Don't redeclare phandle references
ARM: dts: mmp*: Fix serial port names
ARM: dts: mmp*: Make the serial ports compatible with xscale-uart
ARM: dts: tango4: Make /serial compatible with ns16550a

Lukas Wunner (10):
serial: 8250: Don't touch RTS modem control while in rs485 mode
serial: 8250: Support rs485 devicetree properties
serial: 8250: Deduplicate ->rs485_config() callback
serial: 8250: Sanitize rs485 config harder
serial: 8250: Deduplicate rs485 active_timer assignment
serial: 8250: Generalize rs485 software emulation
serial: 8250_bcm2835aux: Support rs485 software emulation
serial: 8250: Support console on software emulated rs485 ports
serial: 8250: Fix rs485 delay after console write
serial: 8250: Optimize irq enable after console write

Matthias Brugger (1):
serial: 8250_early: Add earlycon for BCM2835 aux uart

Michael Walle (9):
serial: earlycon: prefer EARLYCON_DECLARE() variant
tty: serial: fsl_lpuart: fix DMA operation when using IOMMU
tty: serial: fsl_lpuart: fix DMA mapping
tty: serial: fsl_lpuart: add LS1028A support
tty: serial: fsl_lpuart: add LS1028A earlycon support
dt-bindings: serial: lpuart: add ls1028a compatibility
arm64: dts: ls1028a: add missing LPUART nodes
tty: serial: fsl_lpuart: move dma_request_chan()
tty: serial: fsl_lpuart: fix return value checking

Nishad Kamdar (3):
tty: serial: Use the correct style for SPDX License Identifier
tty: hvc: Use the correct style for SPDX License Identifier
tty: n_tracesink: Use the correct style for SPDX License Identifier

Palmer Dabbelt (1):
tty: sifive: Finish transmission before changing the clock

Peter Ujfalusi (2):
serial: 8250_omap: Fix sleeping function called from invalid context during probe
serial: 8250: 8250_omap: Move locking out from __dma_rx_do_complete()

Raviteja Narayanam (2):
serial: uartps: Remove unconditional wait inside set_termios
serial: uartps: Add TACTIVE check in cdns_uart_tx_empty function

Roja Rani Yarubandi (1):
tty: serial: qcom_geni_serial: Fix GPIO swapping with workaround

Serge Semin (1):
tty: mips_ejtag_fdc: Mark expected switch fall-through

Takashi Iwai (2):
tty: serial: pch_uart: Use scnprintf() for avoiding potential buffer overflow
tty: nozomi: Use scnprintf() for avoiding potential buffer overflow

Uwe Kleine-König (1):
serial: omap: drop unused dt-bindings header

Vignesh Raghavendra (7):
serial: 8250_port: Don't service RX FIFO if throttled
serial: 8250: 8250_omap: Fix throttle to call stop_rx()
serial: 8250: 8250_omap: Terminate DMA before pushing data on RX timeout
serial: 8250: 8250_omap: Account for data in flight during DMA teardown
serial: 8250: 8250_omap: Extend driver data to pass FIFO trigger info
serial: 8250: 8250_omap: Work around errata causing spurious IRQs with DMA
serial: 8250: 8250_omap: Add DMA support for UARTs on K3 SoCs

Vincent Chen (1):
tty: serial: Add CONSOLE_POLL support to SiFive UART

satya priya (1):
tty: serial: qcom_geni_serial: Allocate port->rx_fifo buffer in probe

Documentation/ABI/testing/sysfs-tty | 7 +
.../devicetree/bindings/serial/fsl-imx-uart.txt | 4 +
.../devicetree/bindings/serial/fsl-lpuart.txt | 10 +-
arch/arm/boot/dts/mmp2-brownstone.dts | 332 +++++++------
arch/arm/boot/dts/mmp2.dtsi | 16 +-
arch/arm/boot/dts/mmp3.dtsi | 16 +-
arch/arm/boot/dts/pxa168-aspenite.dts | 24 +-
arch/arm/boot/dts/pxa168.dtsi | 15 +-
arch/arm/boot/dts/pxa910-dkb.dts | 286 ++++++-----
arch/arm/boot/dts/pxa910.dtsi | 15 +-
arch/arm/boot/dts/tango4-common.dtsi | 2 +-
arch/arm64/Kconfig.platforms | 2 +-
arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 73 +++
drivers/accessibility/braille/braille_console.c | 4 -
drivers/tty/hvc/hvc_console.h | 2 +-
drivers/tty/mips_ejtag_fdc.c | 1 +
drivers/tty/n_gsm.c | 140 +++---
drivers/tty/n_hdlc.c | 549 +++++++--------------
drivers/tty/n_tracesink.h | 2 +-
drivers/tty/n_tty.c | 6 +-
drivers/tty/nozomi.c | 69 ++-
drivers/tty/serial/8250/8250.h | 6 +-
drivers/tty/serial/8250/8250_bcm2835aux.c | 80 ++-
drivers/tty/serial/8250/8250_core.c | 15 +-
drivers/tty/serial/8250/8250_dwlib.h | 2 +-
drivers/tty/serial/8250/8250_exar.c | 2 +-
drivers/tty/serial/8250/8250_lpss.c | 6 +
drivers/tty/serial/8250/8250_mtk.c | 50 +-
drivers/tty/serial/8250/8250_of.c | 67 +--
drivers/tty/serial/8250/8250_omap.c | 263 +++++++---
drivers/tty/serial/8250/8250_pci.c | 2 +-
drivers/tty/serial/8250/8250_port.c | 238 ++++++---
drivers/tty/serial/8250/8250_pxa.c | 2 +-
drivers/tty/serial/8250/8250_tegra.c | 198 ++++++++
drivers/tty/serial/8250/Kconfig | 9 +
drivers/tty/serial/8250/Makefile | 1 +
drivers/tty/serial/Kconfig | 14 +-
drivers/tty/serial/ar933x_uart.c | 113 ++++-
drivers/tty/serial/atmel_serial.c | 23 +-
drivers/tty/serial/atmel_serial.h | 2 +-
drivers/tty/serial/cpm_uart/cpm_uart.h | 6 +-
drivers/tty/serial/cpm_uart/cpm_uart_core.c | 48 +-
drivers/tty/serial/earlycon.c | 11 +
drivers/tty/serial/efm32-uart.c | 2 +-
drivers/tty/serial/fsl_lpuart.c | 228 ++++++---
drivers/tty/serial/icom.h | 2 +-
drivers/tty/serial/ifx6x60.c | 195 +++-----
drivers/tty/serial/ifx6x60.h | 15 +-
drivers/tty/serial/imx.c | 44 +-
drivers/tty/serial/jsm/jsm.h | 2 +-
drivers/tty/serial/kgdboc.c | 4 +-
drivers/tty/serial/lantiq.c | 1 -
drivers/tty/serial/omap-serial.c | 2 -
drivers/tty/serial/pch_uart.c | 22 +-
drivers/tty/serial/pic32_uart.c | 8 +-
drivers/tty/serial/pic32_uart.h | 2 +-
drivers/tty/serial/qcom_geni_serial.c | 59 ++-
drivers/tty/serial/sc16is7xx.c | 2 +-
drivers/tty/serial/serial_core.c | 266 +++++++---
drivers/tty/serial/serial_mctrl_gpio.h | 2 +-
drivers/tty/serial/sifive.c | 55 ++-
drivers/tty/serial/sirfsoc_uart.h | 2 +-
drivers/tty/serial/sprd_serial.c | 48 +-
drivers/tty/serial/stm32-usart.h | 2 +-
drivers/tty/serial/timbuart.h | 2 +-
drivers/tty/serial/xilinx_uartps.c | 20 +-
drivers/tty/sysrq.c | 12 +
drivers/tty/vt/selection.c | 199 ++++----
drivers/tty/vt/vt.c | 152 +++---
drivers/tty/vt/vt_ioctl.c | 75 +--
include/linux/console.h | 1 +
include/linux/selection.h | 4 +-
include/linux/serial_8250.h | 4 +
include/linux/serial_core.h | 4 +-
include/linux/spi/ifx_modem.h | 5 -
include/linux/sysrq.h | 7 +
include/linux/vt_kern.h | 64 +--
kernel/printk/printk.c | 49 +-
kernel/sysctl.c | 41 +-
lib/Kconfig.debug | 10 +
80 files changed, 2552 insertions(+), 1793 deletions(-)
create mode 100644 drivers/tty/serial/8250/8250_tegra.c

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