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linux/drivers/tty/serial
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Uwe Kleine-König ea2624b5b8 serial: stm32: Reset .throttled state in .startup() 
When an UART is opened that still has .throttled set from a previous
open, the RX interrupt is enabled but the irq handler doesn't consider
it. This easily results in a stuck irq with the effect to occupy the CPU
in a tight loop.

So reset the throttle state in .startup() to ensure that RX irqs are
handled.

Fixes: d1ec8a2eabe9 ("serial: stm32: update throttle and unthrottle ops for dma mode")
Cc: stable@vger.kernel.org
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/a784f80d3414f7db723b2ec66efc56e1ad666cbf.1713344161.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-04-17 13:26:45 +02:00
..
8250
serial: 8250_pci: Remove redundant PCI IDs
2024-04-09 15:57:01 +02:00
jsm
tty: jsm: Remove redundant assignment to variable linestatus
2024-02-18 18:59:58 +01:00
21285.c
serial: 21285: Use port lock wrappers
2023-09-18 11:18:08 +02:00
altera_jtaguart.c
serial: altera_jtaguart: Convert to platform remove callback returning void
2023-11-23 19:12:30 +00:00
altera_uart.c
tty/serial: altera_uart: use more informative labels in /proc/interrupts
2024-01-04 16:20:51 +01:00
amba-pl010.c
serial: amba-pl010: Use port lock wrappers
2023-09-18 11:18:09 +02:00
amba-pl011.c
serial: amba-pl011: Use uart_prepare_sysrq_char().
2024-03-02 22:06:20 +01:00
apbuart.c
serial: apbuart: fix console prompt on qemu
2024-01-04 16:21:06 +01:00
apbuart.h
…
ar933x_uart.c
serial: ar933x: Use uart_prepare_sysrq_char().
2024-03-02 22:06:20 +01:00
arc_uart.c
serial: arc_uart: Use port lock wrappers
2023-09-18 11:18:10 +02:00
atmel_serial.c
serial: atmel: convert not to use dma_request_slave_channel()
2023-11-23 19:32:36 +00:00
atmel_serial.h
tty: serial: atmel: Use FIELD_PREP/FIELD_GET
2022-09-22 16:32:25 +02:00
bcm63xx_uart.c
serial: bcm63xx: Use uart_prepare_sysrq_char().
2024-03-02 22:06:20 +01:00
clps711x.c
serial: clps711x: Convert to platform remove callback returning void
2023-11-23 19:12:31 +00:00
cpm_uart.c
serial: cpm: Convert to platform remove callback returning void
2023-11-23 19:12:31 +00:00
cpm_uart.h
serial: cpm_uart: Remove cpm_uart/ subdirectory
2023-08-04 15:08:30 +02:00
digicolor-usart.c
serial: digicolor: Convert to platform remove callback returning void
2023-11-23 19:12:31 +00:00
dz.c
serial: dz: Use port lock wrappers
2023-09-18 11:18:11 +02:00
dz.h
…
earlycon-riscv-sbi.c
tty/serial: Add RISC-V SBI debug console based earlycon
2024-01-10 07:04:04 -08:00
earlycon-semihost.c
serial: Rename earlycon semihost driver
2023-01-19 14:58:19 +01:00
earlycon.c
earlycon: Let users set the clock frequency
2023-01-19 14:56:44 +01:00
esp32_acm.c
serial: esp32_acm: Add explicit platform_device.h include
2023-12-15 14:20:00 +01:00
esp32_uart.c
serial: esp32_uart: Use device_get_match_data()
2023-12-15 14:20:00 +01:00
fsl_linflexuart.c
serial: linflexuart: Remove redundant uart type assignment
2024-01-27 18:40:17 -08:00
fsl_lpuart.c
tty: serial: fsl_lpuart: avoid idle preamble pending if CTS is enabled
2024-03-05 13:40:07 +00:00
icom.c
serial: icom: Use port lock wrappers
2023-09-18 11:18:11 +02:00
imx_earlycon.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
imx.c
tty: serial: imx: Fix broken RS485
2024-03-02 22:10:35 +01:00
ip22zilog.c
serial: ip22zilog: Use port lock wrappers
2023-09-18 11:18:11 +02:00
ip22zilog.h
…
Kconfig
RISC-V Patches for the 6.8 Merge Window, Part 4
2024-01-20 11:06:04 -08:00
kgdb_nmi.c
tty: make tty_operations::write()'s count size_t
2023-08-11 21:12:46 +02:00
kgdboc.c
tty: serial: kgdboc: fix mutex locking order for configure_kgdboc()
2023-01-16 16:44:53 +01:00
lantiq.c
serial: lantiq: Convert to platform remove callback returning void
2023-11-23 19:12:32 +00:00
liteuart.c
serial: liteuart: Convert to platform remove callback returning void
2023-11-23 19:12:32 +00:00
lpc32xx_hs.c
serial: lpc32xx_hs: Use uart_prepare_sysrq_char() to handle sysrq.
2024-03-02 22:06:21 +01:00
ma35d1_serial.c
serial: ma35d1: Fix spelling mistake "ononsole" -> "console"
2023-12-15 14:23:30 +01:00
Makefile
drivers/tty/serial: add ESP32S3 ACM gadget driver
2023-10-16 20:18:15 +02:00
max310x.c
Merge 6.8-rc3 into tty-next
2024-02-04 06:21:02 -08:00
max3100.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
mcf.c
drivers/tty/serial: Remove unused function early_mcf_setup
2024-03-02 21:52:35 +01:00
men_z135_uart.c
serial: men_z135_uart: Use port lock wrappers
2023-09-18 11:18:12 +02:00
meson_uart.c
serial: meson: Use uart_prepare_sysrq_char().
2024-03-02 22:06:21 +01:00
milbeaut_usio.c
serial: milbeaut_usio: Convert to platform remove callback returning void
2023-11-23 19:12:32 +00:00
mpc52xx_uart.c
serial: mpc52xx: Convert to platform remove callback returning void
2023-11-23 19:12:32 +00:00
mps2-uart.c
serial: mps2-uart: Use port lock wrappers
2023-09-18 11:18:12 +02:00
msm_serial.c
serial: msm: Use uart_prepare_sysrq_char().
2024-03-02 22:06:21 +01:00
mux.c
tty: serial: use uart_port_tx_limited()
2022-11-03 03:32:40 +01:00
mvebu-uart.c
serial: mvebu-uart: Use port lock wrappers
2023-09-18 11:18:12 +02:00
mxs-auart.c
serial: mxs-auart: add spinlock around changing cts state
2024-04-09 15:56:41 +02:00
omap-serial.c
serial: omap: Use uart_prepare_sysrq_char().
2024-03-02 22:06:21 +01:00
owl-uart.c
serial: owl: Use uart_prepare_sysrq_char() to handle sysrq.
2024-03-02 22:06:21 +01:00
pch_uart.c
serial: pch: Use uart_prepare_sysrq_char().
2024-03-02 22:06:22 +01:00
pic32_uart.c
serial: pic32: Convert to platform remove callback returning void
2023-11-23 19:12:33 +00:00
pmac_zilog.c
serial/pmac_zilog: Remove flawed mitigation for rx irq flood
2024-04-09 15:57:12 +02:00
pmac_zilog.h
serial: pmac_zilog: remove unused uart_pmac_port::termios_cache
2022-05-19 18:23:19 +02:00
pxa.c
serial: pxa: Use uart_prepare_sysrq_char().
2024-03-02 22:06:21 +01:00
qcom_geni_serial.c
TTY/Serial driver update for 6.9-rc1
2024-03-21 12:44:10 -07:00
rda-uart.c
serial: rda: Use uart_prepare_sysrq_char() to handle sysrq.
2024-03-02 22:06:21 +01:00
rp2.c
tty: rp2: remove unused rp2_uart_port::ignore_rx
2023-11-23 19:16:03 +00:00
sa1100.c
serial: sa1100: Convert to platform remove callback returning void
2023-11-23 19:12:33 +00:00
samsung_tty.c
serial: samsung: honor fifosize from dts at first
2024-03-02 22:04:05 +01:00
sb1250-duart.c
serial: sb1250-duart: Use port lock wrappers
2023-09-18 11:18:14 +02:00
sc16is7xx.c
serial: sc16is7xx: refactor EFR lock
2024-01-04 16:30:05 +01:00
sccnxp.c
serial: sccnxp: Convert to platform remove callback returning void
2023-11-23 19:12:34 +00:00
serial_base_bus.c
serial: core: make serial_base_bus_type const
2024-02-06 14:35:42 +00:00
serial_base.h
serial: core: Fix missing shutdown and startup for serial base port
2024-04-11 14:21:11 +02:00
serial_core.c
serial: core: Fix missing shutdown and startup for serial base port
2024-04-11 14:21:11 +02:00
serial_ctrl.c
serial: core: Start managing serial controllers to enable runtime PM
2023-05-31 10:46:59 +01:00
serial_mctrl_gpio.c
serial: mctrl_gpio: Use port lock wrappers
2023-09-18 11:18:14 +02:00
serial_mctrl_gpio.h
serial: mctrl_gpio: add a new API to enable / disable wake_irq
2022-02-08 11:07:16 +01:00
serial_port.c
serial: core: Fix missing shutdown and startup for serial base port
2024-04-11 14:21:11 +02:00
serial_txx9.c
serial: txx9: Add missing #include <asm/txx9/generic.h>
2024-01-27 19:05:39 -08:00
serial-tegra.c
serial: tegra: Convert to platform remove callback returning void
2023-11-23 19:12:34 +00:00
sh-sci.c
serial: sh-sci: Call sci_serial_{in,out}() directly
2024-03-05 13:37:32 +00:00
sh-sci.h
tty: serial: sh-sci: Add support for tx end interrupt handling
2023-04-20 13:47:33 +02:00
sifive.c
serial: sifive: Use uart_prepare_sysrq_char() to handle sysrq.
2024-03-02 22:06:21 +01:00
sprd_serial.c
serial: sprd: Convert to platform remove callback returning void
2023-11-23 19:12:34 +00:00
st-asc.c
serial: st-asc: don't get/put GPIOs in atomic context
2024-03-02 22:04:12 +01:00
stm32-usart.c
serial: stm32: Reset .throttled state in .startup()
2024-04-17 13:26:45 +02:00
stm32-usart.h
serial: stm32: get FIFO size from hwcfg register
2024-01-27 19:04:11 -08:00
suncore.c
…
sunhv.c
serial: sunhv: Convert to platform remove callback returning void
2023-11-23 19:12:35 +00:00
sunplus-uart.c
serial: sunplus: Use uart_prepare_sysrq_char().
2024-03-02 22:06:21 +01:00
sunsab.c
serial: sunsab: remove trailing whitespaces
2023-11-23 19:31:25 +00:00
sunsab.h
…
sunsu.c
serial: sunsu: Convert to platform remove callback returning void
2023-11-23 19:12:35 +00:00
sunzilog.c
serial: sunzilog: Convert to platform remove callback returning void
2023-11-23 19:12:35 +00:00
sunzilog.h
…
tegra-tcu.c
serial: tegra-tcu: Convert to platform remove callback returning void
2023-11-23 19:12:35 +00:00
timbuart.c
serial: timbuart: Convert to platform remove callback returning void
2023-11-23 19:12:35 +00:00
timbuart.h
…
uartlite.c
serial: uartlite: Use dynamic allocation for major number when uart ports > 4
2023-11-25 07:23:16 +00:00
ucc_uart.c
serial: ucc_uart: Fix multiple address space type errors
2023-12-08 12:02:37 +01:00
vt8500_serial.c
serial: vt8500: Use port lock wrappers
2023-09-18 11:18:16 +02:00
xilinx_uartps.c
tty: serial: uartps: Add rs485 support to uartps driver
2024-01-27 19:07:08 -08:00
zs.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
zs.h
…