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cea37afd28f1bb7ca09a0c27e75f89cf2df9147d
linux/drivers/tty/serial
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Johan Hovold cea37afd28 serial: stm32: defer sysrq processing 
Use the uart_unlock_and_check_sysrq() helper to defer sysrq processing
until receive processing is done and the port lock has been released.

This allows cleaning up the console_write() implementation by not having
to work around the recursive sysrq case (by dropping locking completely)
and also makes the console code work with PREEMPT_RT by no longer
relying on local_irq_save().

Reviewed-by: Valentin Caron<valentin.caron@foss.st.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210416140557.25177-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-22 12:04:26 +02:00
..
8250
serial: do not restore interrupt state in sysrq helper
2021-04-22 12:04:26 +02:00
cpm_uart
tty: cpm_uart, use port->flags instead of low_latency
2021-01-07 16:17:31 +01:00
jsm
Merge 5.12-rc6 into tty-next
2021-04-05 08:59:21 +02:00
21285.c
tty: serial: 21285: fix lockup on open
2020-10-28 13:39:14 +01:00
altera_jtaguart.c
serial: altera_jtaguart: Replace HTTP links with HTTPS ones
2020-07-21 20:04:54 +02:00
altera_uart.c
serial: altera: set RRDY flag also without irq
2018-02-28 13:30:09 +01:00
amba-pl010.c
amba: Make the remove callback return void
2021-02-02 14:25:50 +01:00
amba-pl011.c
amba: Make the remove callback return void
2021-02-02 14:25:50 +01:00
amba-pl011.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
apbuart.c
tty/serial: Migrate apbuart to use has_sysrq
2019-12-18 15:04:44 +01:00
apbuart.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ar933x_uart.c
serial: ar933x_uart: disable clk on error handling path in probe
2020-11-12 09:41:07 +01:00
arc_uart.c
tty/serial: Migrate arc_uart to use has_sysrq
2019-12-18 15:04:45 +01:00
atmel_serial.c
Merge 5.9-rc3 into tty-next
2020-08-31 07:19:25 +02:00
atmel_serial.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
bcm63xx_uart.c
Revert "tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart"
2020-05-04 11:49:57 +02:00
clps711x.c
tty/serial: Migrate clps711x to use has_sysrq
2019-12-18 15:04:46 +01:00
digicolor-usart.c
tty/serial: digicolor: Fix digicolor-usart already registered warning
2019-06-10 19:08:31 +02:00
dz.c
Merge tag 'tty-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2020-01-29 10:13:27 -08:00
dz.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
earlycon-arm-semihost.c
tty: serial: Remove redundant license text
2017-11-08 13:08:12 +01:00
earlycon-riscv-sbi.c
tty/serial: use uart_console_write in the RISC-V SBL early console
2019-01-23 15:41:50 -08:00
earlycon.c
earlycon: simplify earlycon-table implementation
2020-12-04 15:49:48 +01:00
fsl_linflexuart.c
tty: serial: linflexuart: Remove unnecessary '|' operation and add error count
2020-11-06 17:12:30 +01:00
fsl_lpuart.c
serial: fsl_lpuart: Use of_device_get_match_data()
2021-01-20 18:48:15 +01:00
icom.c
module: remove never implemented MODULE_SUPPORTED_DEVICE
2021-03-17 13:16:18 -07:00
icom.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
imx_earlycon.c
tty: serial: imx: add imx earlycon driver
2020-07-29 17:11:02 +02:00
imx.c
serial: imx: drop workaround for forced irq threading
2021-03-23 10:32:44 +01:00
ip22zilog.c
tty/serial: Migrate ip22zilog to use has_sysrq
2019-12-18 15:04:50 +01:00
ip22zilog.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kconfig
tty: serial: samsung_tty: Add support for Apple UARTs
2021-03-10 09:34:10 +01:00
kgdb_nmi.c
tty: do not check tty_unregister_driver's return value
2021-03-10 09:34:09 +01:00
kgdboc.c
Merge 5.8-rc6 into tty-next
2020-07-20 09:39:11 +02:00
lantiq.c
tty/serial/lantiq: convert comma to semicolon
2020-12-28 16:10:50 +01:00
liteuart.c
serial: liteuart: fix return value check in liteuart_probe()
2021-03-10 09:34:10 +01:00
lpc32xx_hs.c
tty: serial: lpc32xx_hs: Remove unused variable 'tmp'
2020-11-06 10:54:04 +01:00
Makefile
serial: ifx6x60: Remove driver for deprecated platform
2021-01-26 19:21:49 +01:00
max310x.c
tty: max310x: fix flexible_array.cocci warnings
2021-03-23 10:24:27 +01:00
max3100.c
tty_port: drop last traces of low_latency
2021-01-07 16:17:32 +01:00
mcf.c
serial: mcf: add sysrq capability
2020-10-05 13:32:30 +02:00
men_z135_uart.c
tty: serial, fix kernel-doc
2020-08-18 13:51:18 +02:00
meson_uart.c
tty: serial: meson: enable console as module
2020-12-11 17:14:22 +01:00
milbeaut_usio.c
tty/serial: Migrate milbeaut_usio to use has_sysrq
2019-12-18 15:04:51 +01:00
mpc52xx_uart.c
tty/serial: mpc52xx_uart: Don't zero port->sysrq
2019-12-18 15:04:52 +01:00
mps2-uart.c
serial: mps2-uart: Add parentheses around conditional in mps2_uart_shutdown
2019-01-31 19:34:10 +01:00
msm_serial.c
tty: serial: msm_serial: Constify msm_uart_pops
2020-11-06 17:16:36 +01:00
mux.c
Merge tag 'tty-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2020-01-29 10:13:27 -08:00
mvebu-uart.c
serial: mvebu-uart: fix tx lost characters at power off
2020-12-28 16:17:34 +01:00
mxs-auart.c
serial: mxs-auart: Remove <asm/cacheflush.h>
2021-01-20 18:48:19 +01:00
omap-serial.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
owl-uart.c
tty: serial: owl: Add support for kernel debugger
2021-01-13 17:16:54 +01:00
pch_uart.c
serial: pch_uart: fix build error with !CONFIG_DEBUG_FS
2021-03-23 10:31:09 +01:00
pic32_uart.c
serial: pic32_uart: Use uart_console() helper
2020-03-12 10:00:22 +01:00
pic32_uart.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
pmac_zilog.c
m68k: Fix WARNING splat in pmac_zilog driver
2020-11-23 11:31:00 +01:00
pmac_zilog.h
tty: serial: pmac_zilog: Remove unused disposable variable 'garbage'
2020-11-13 15:28:27 +01:00
pxa.c
tty/serial: Migrate pxa to use has_sysrq
2019-12-18 15:04:57 +01:00
qcom_geni_serial.c
serial: do not restore interrupt state in sysrq helper
2021-04-22 12:04:26 +02:00
rda-uart.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
rp2.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
sa1100.c
serial: sa1100: use platform_get_resource()
2020-08-18 15:02:06 +02:00
samsung_tty.c
tty: serial: samsung_tty: remove spinlock flags in interrupt handlers
2021-03-23 10:20:38 +01:00
sb1250-duart.c
MIPS: Replace SIBYTE_1956_WAR by CONFIG_SB1_PASS_2_WORKAROUNDS
2020-09-07 22:24:51 +02:00
sc16is7xx.c
sc16is7xx: Defer probe if device read fails
2021-04-05 12:07:32 +02:00
sccnxp.c
tty/serial: Migrate sccnxp to use has_sysrq
2019-12-18 15:05:00 +01:00
serial_core.c
serial: core: return early on unsupported ioctls
2021-04-10 10:36:34 +02:00
serial_mctrl_gpio.c
serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning
2020-11-06 17:12:05 +01:00
serial_mctrl_gpio.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
serial_txx9.c
serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init
2020-11-06 17:24:41 +01:00
serial-tegra.c
tty: serial: serial-tegra: Provide some missing struct member descriptions
2020-11-06 10:54:05 +01:00
sh-sci.c
serial: sh-sci: remove obsolete latency workaround
2021-04-15 12:59:16 +02:00
sh-sci.h
serial: sh-sci: Drop unused include
2020-04-16 16:13:34 +02:00
sifive.c
riscv: Fix sifive serial driver
2021-01-07 18:02:13 -08:00
sprd_serial.c
serial: sprd: remove redundant sprd_port cleanup
2020-03-18 12:20:04 +01:00
st-asc.c
tty: st-asc: switch to using devm_gpiod_get()
2020-01-10 14:01:33 +01:00
stm32-usart.c
serial: stm32: defer sysrq processing
2021-04-22 12:04:26 +02:00
stm32-usart.h
tty/serial: Add rx-tx-swap OF option to stm32-usart
2021-04-05 12:06:52 +02:00
suncore.c
tty: Use of_node_name_{eq,prefix} for node name comparisons
2018-12-17 16:12:17 +01:00
sunhv.c
Revert "serial: sunhv: Initialize lock for non-registered console"
2020-07-21 18:21:49 +02:00
sunsab.c
serial: sunsab: Return proper error code from console ->setup() hook
2020-06-25 14:21:28 +02:00
sunsab.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sunsu.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
sunzilog.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
sunzilog.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tegra-tcu.c
serial: Add missing MODULE_DEVICE_TABLE
2021-04-10 10:37:27 +02:00
timbuart.c
tty: timbuart: convert tasklets to use new tasklet_setup() API
2020-08-18 13:33:13 +02:00
timbuart.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
uartlite.c
tty: serial: uartlite: Support probe deferral
2020-12-04 16:51:40 +01:00
ucc_uart.c
serial: ucc_uart: make qe_uart_set_mctrl() static
2020-09-16 13:14:58 +02:00
vr41xx_siu.c
tty/serial: Migrate vr41xx_siu to use has_sysrq
2019-12-18 15:05:09 +01:00
vt8500_serial.c
tty/serial: Migrate vt8500_serial to use has_sysrq
2019-12-18 15:05:09 +01:00
xilinx_uartps.c
tty: serial: xilinx_uartps: Supply description for missing member 'cts_override'
2020-11-06 10:54:05 +01:00
zs.c
Merge tag 'tty-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2020-01-29 10:13:27 -08:00
zs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00