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linux/drivers/tty/serial
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Johan Hovold 10652a9e9f Revert "serial: core: Refactor uart_unlock_and_check_sysrq()" 
This reverts commit da9a5aa3402db0ff3b57216d8dbf2478e1046cae.

In order to ease backporting a fix for a sysrq regression, revert this
rewrite which was since added on top.

The other sysrq helpers now bail out early when sysrq is not enabled;
it's better to keep that pattern here as well.

Note that the __releases() attribute won't be needed after the follow-on
fix either.

Fixes: da9a5aa3402d ("serial: core: Refactor uart_unlock_and_check_sysrq()")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200610152232.16925-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-27 16:16:37 +02:00
..
8250
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
cpm_uart
tty: serial: cpm_uart: Fix behaviour for non existing GPIOs
2020-06-27 13:50:51 +02:00
jsm
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
21285.c
tty: serial: 21285: stop using the unused[] variable from struct uart_port
2019-12-19 20:10:28 +01:00
altera_jtaguart.c
…
altera_uart.c
serial: altera: set RRDY flag also without irq
2018-02-28 13:30:09 +01:00
amba-pl010.c
tty/serial: Migrate amba-pl01* to use has_sysrq
2019-12-18 15:04:44 +01:00
amba-pl011.c
TTY/Serial driver updates for 5.8-rc1
2020-06-07 09:52:36 -07:00
amba-pl011.h
…
apbuart.c
tty/serial: Migrate apbuart to use has_sysrq
2019-12-18 15:04:44 +01:00
apbuart.h
…
ar933x_uart.c
serial: Allow uart_get_rs485_mode() to return errno
2020-05-15 14:47:05 +02:00
arc_uart.c
tty/serial: Migrate arc_uart to use has_sysrq
2019-12-18 15:04:45 +01:00
atmel_serial.c
serial: Allow uart_get_rs485_mode() to return errno
2020-05-15 14:47:05 +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
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
dz.h
…
earlycon-arm-semihost.c
…
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
serial: earlycon: prefer EARLYCON_DECLARE() variant
2020-03-07 09:52:01 +01:00
efm32-uart.c
tty: serial: efm32: fix spelling mistake "reserverd" -> "reserved"
2020-02-19 11:38:58 +01:00
fsl_linflexuart.c
tty/serial: Migrate fsl_linflexuart to use has_sysrq
2019-12-18 15:04:48 +01:00
fsl_lpuart.c
tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP
2020-05-15 15:46:29 +02:00
icom.c
tty: serial: Remove call to memset after pci_alloc_consistent
2019-09-04 12:43:44 +02:00
icom.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
ifx6x60.c
tty: serial: ifx6x60: Convert to GPIO descriptors
2020-03-12 10:03:54 +01:00
ifx6x60.h
tty: serial: ifx6x60: Convert to GPIO descriptors
2020-03-12 10:03:54 +01:00
imx.c
tty: serial: imx: clear Ageing Timer Interrupt in handler
2020-05-29 13:00:54 +02:00
ip22zilog.c
tty/serial: Migrate ip22zilog to use has_sysrq
2019-12-18 15:04:50 +01:00
ip22zilog.h
…
Kconfig
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
kgdb_nmi.c
tty/serial: kgdb_nmi: use true,false for bool variable
2020-01-14 14:34:04 +01:00
kgdboc.c
serial: kgdboc: Allow earlycon initialization to be deferred
2020-06-02 15:15:45 +01:00
lantiq.c
serial: lantiq: Make driver modular
2020-05-15 12:22:19 +02:00
lpc32xx_hs.c
serial: lpc32xx_hs: Drop surplus include
2020-04-16 16:12:33 +02:00
Makefile
{tty: serial, nand: onenand}: samsung: rename to fix build warning
2019-11-18 18:49:11 +01:00
max310x.c
serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control
2019-09-05 09:57:44 +02:00
max3100.c
…
mcf.c
…
men_z135_uart.c
drivers: mcb: use symbol namespaces
2019-11-03 19:54:53 +01:00
meson_uart.c
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
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: RX SW/FIFO mode fallback
2020-01-14 14:07:51 +01:00
mux.c
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
mvebu-uart.c
tty:serial:mvebu-uart:fix a wrong return
2020-03-05 21:26:34 +01:00
mxs-auart.c
tty/serial: Migrate mxs-auart to use has_sysrq
2019-12-18 15:04:53 +01:00
omap-serial.c
serial: Allow uart_get_rs485_mode() to return errno
2020-05-15 14:47:05 +02:00
owl-uart.c
tty: serial: owl: add "much needed" clk_prepare_enable()
2020-04-23 15:46:30 +02:00
pch_uart.c
tty: serial: pch_uart: Use scnprintf() for avoiding potential buffer overflow
2020-03-18 12:59:29 +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
tty/serial: Migrate pmac_zilog to use has_sysrq
2019-12-18 15:04:56 +01:00
pmac_zilog.h
…
pnx8xxx_uart.c
tty/serial: Migrate pnx8xxx_uart to use has_sysrq
2019-12-18 15:04:57 +01:00
pxa.c
tty/serial: Migrate pxa to use has_sysrq
2019-12-18 15:04:57 +01:00
qcom_geni_serial.c
TTY/Serial driver updates for 5.8-rc1
2020-06-07 09:52:36 -07:00
rda-uart.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
rp2.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
sa1100.c
tty/serial: Migrate sa1100 to use has_sysrq
2019-12-18 15:04:59 +01:00
samsung_tty.c
tty: serial: samsung: Correct clock selection logic
2020-05-15 12:24:15 +02:00
sb1250-duart.c
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
sc16is7xx.c
sc16is7xx: Add flag to activate IrDA mode
2020-05-29 12:42:56 +02:00
sccnxp.c
tty/serial: Migrate sccnxp to use has_sysrq
2019-12-18 15:05:00 +01:00
serial_core.c
Revert "serial: core: Refactor uart_unlock_and_check_sysrq()"
2020-06-27 16:16:37 +02:00
serial_mctrl_gpio.c
serial: mctrl_gpio: Check for NULL pointer
2019-10-07 13:21:54 +02:00
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
tty/serial: Migrate serial_txx9 to use has_sysrq
2019-12-18 15:05:01 +01:00
serial-tegra.c
tty: serial: tegra: Handle RX transfer in PIO mode if DMA wasn't started
2020-02-10 12:32:13 -08:00
sh-sci.c
serial: sh-sci: Make sure status register SCxSR is read in correct sequence
2020-04-16 16:16:52 +02:00
sh-sci.h
serial: sh-sci: Drop unused include
2020-04-16 16:13:34 +02:00
sifive.c
tty: serial: add missing spin_lock_init for SiFive serial console
2020-05-15 14:55:10 +02:00
sirfsoc_uart.c
serial: sirf: Fix out-of-bounds access through DT alias
2018-02-28 15:30:00 +01:00
sirfsoc_uart.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
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: add no_console_suspend support
2020-05-19 15:53:36 +02:00
stm32-usart.h
tty: serial: Add modem control gpio support for STM32 UART
2020-05-15 12:24:15 +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
serial: sunhv: Initialize lock for non-registered console
2020-04-16 16:16:52 +02:00
sunsab.c
tty/serial: Migrate sunsab to use has_sysrq
2019-12-18 15:05:05 +01:00
sunsab.h
…
sunsu.c
tty/serial: Migrate sunsu to use has_sysrq
2019-12-18 15:05:06 +01:00
sunzilog.c
tty/serial: Migrate sunzilog to use has_sysrq
2019-12-18 15:05:08 +01:00
sunzilog.h
…
tegra-tcu.c
serial: Add Tegra Combined UART driver
2019-01-30 09:31:31 +01:00
timbuart.c
…
timbuart.h
tty: serial: Use the correct style for SPDX License Identifier
2020-03-07 09:52:01 +01:00
uartlite.c
Revert "serial-uartlite: Move the uart register"
2019-11-14 06:29:08 +08:00
ucc_uart.c
ARM: SoC-related driver updates
2020-02-08 14:04:19 -08:00
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
Merge 5.7-rc5 into tty-next
2020-05-11 08:55:10 +02:00
zs.c
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
zs.h
…