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linux/drivers/tty/serial
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Tony Lindgren 0c05493341 serial: 8250: Fix oops for port->pm on uart_change_pm() 
[ Upstream commit dfe2aeb226 ]

Unloading a hardware specific 8250 driver can produce error "Unable to
handle kernel paging request at virtual address" about ten seconds after
unloading the driver. This happens on uart_hangup() calling
uart_change_pm().

Turns out commit 04e82793f0 ("serial: 8250: Reinit port->pm on port
specific driver unbind") was only a partial fix. If the hardware specific
driver has initialized port->pm function, we need to clear port->pm too.
Just reinitializing port->ops does not do this. Otherwise serial8250_pm()
will call port->pm() instead of serial8250_do_pm().

Fixes: 04e82793f0 ("serial: 8250: Reinit port->pm on port specific driver unbind")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230804131553.52927-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-08-23 17:52:38 +02:00
..
8250 serial: 8250: Fix oops for port->pm on uart_change_pm() 2023-08-23 17:52:38 +02:00
cpm_uart serial: cpm_uart: Fix a COMPILE_TEST dependency 2023-06-09 10:34:26 +02:00
jsm drivers: serial: jsm: fix some leaks in probe 2022-09-22 16:11:43 +02:00
21285.c TTY/Serial driver update for 6.1-rc1 2022-10-07 16:36:24 -07:00
altera_jtaguart.c tty: serial: do unlock on a common path in altera_jtaguart_console_putc() 2022-09-30 14:58:46 +02:00
altera_uart.c serial: altera_uart: fix locking in polling mode 2022-12-31 13:32:40 +01:00
amba-pl010.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
amba-pl011.c serial: amba-pl011: fix high priority character transmission in rs486 mode 2023-01-24 07:24:39 +01:00
apbuart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
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: Deassert Transmit Enable on ->rs485_config() 2022-09-22 16:43:05 +02:00
arc_uart.c serial: arc_uart: fix of_iomap leak in arc_serial_probe 2023-05-24 17:32:44 +01:00
atmel_serial.c serial: atmel: don't enable IRQs prematurely 2023-07-23 13:49:40 +02:00
atmel_serial.h tty: serial: atmel: Use FIELD_PREP/FIELD_GET 2022-09-22 16:32:25 +02:00
bcm63xx_uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
clps711x.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
digicolor-usart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
dz.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
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 serial: make uart_console_write->putchar()'s character an unsigned char 2022-03-03 15:06:31 +01:00
earlycon-riscv-sbi.c serial: make uart_console_write->putchar()'s character an unsigned char 2022-03-03 15:06:31 +01:00
earlycon.c tty: move from strlcpy with unused retval to strscpy 2022-08-30 14:21:59 +02:00
fsl_linflexuart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
fsl_lpuart.c tty: serial: fsl_lpuart: Clear the error flags by writing 1 for lpuart32 platforms 2023-08-23 17:52:31 +02:00
icom.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
imx.c tty: serial: imx: fix rs485 rx after tx 2023-07-23 13:49:41 +02:00
imx_earlycon.c serial: make uart_console_write->putchar()'s character an unsigned char 2022-03-03 15:06:31 +01:00
ip22zilog.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
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 serial: cpm_uart: Fix a COMPILE_TEST dependency 2023-06-09 10:34:26 +02:00
kgdb_nmi.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
kgdboc.c serial: kgdboc: Fix typo in comment 2022-06-27 14:37:09 +02:00
lantiq.c serial: lantiq: add missing interrupt ack 2023-06-21 16:00:57 +02:00
liteuart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
lpc32xx_hs.c tty: serial: extract tx_ready() from __serial_lpc32xx_tx() 2022-09-22 16:14:08 +02:00
Makefile serial: remove VR41XX serial driver 2022-07-16 08:16:01 +02:00
max310x.c serial: max310x: fix IO data corruption in batched operations 2023-05-11 23:03:01 +09:00
max3100.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mcf.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
men_z135_uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
meson_uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
milbeaut_usio.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mpc52xx_uart.c tty: serial: switch mpc52xx_uart_int_{r,t}x_chars() to bool 2022-09-22 16:14:08 +02:00
mps2-uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
msm_serial.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mux.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mvebu-uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mxs-auart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
omap-serial.c tty: serial: extract serial_omap_put_char() from transmit_chars() 2022-09-22 16:14:08 +02:00
owl-uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
pch_uart.c tty: pcn_uart: fix memory leak with using debugfs_lookup() 2023-03-11 13:55:39 +01:00
pic32_uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
pmac_zilog.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +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: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
qcom_geni_serial.c serial: qcom-geni: drop bogus runtime pm state update 2023-08-03 10:24:08 +02:00
rda-uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
rp2.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sa1100.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
samsung_tty.c tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk 2023-07-23 13:49:41 +02:00
sb1250-duart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sc16is7xx.c serial: sc16is7xx: setup GPIO controller later in probe 2023-03-11 13:55:34 +01:00
sccnxp.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
serial-tegra.c serial: tegra: Add missing clk_disable_unprepare() in tegra_uart_hw_init() 2023-03-10 09:33:32 +01:00
serial_core.c serial: core: lock port for start_rx() in uart_resume_port() 2023-07-19 16:21:53 +02:00
serial_mctrl_gpio.c Documentation: serial: move GPIO kernel-doc to the functions 2022-07-28 10:37:42 +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_txx9.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sh-sci.c tty: serial: sh-sci: Fix Rx on RZ/G2L SCI 2023-04-13 16:55:28 +02:00
sh-sci.h serial: sh-sci: Add support for RZ/G2L SoC 2021-06-04 15:12:40 +02:00
sifive.c serial: sifive: Fix sifive_serial_console_setup() section 2023-08-03 10:24:08 +02:00
sprd_serial.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
st-asc.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
stm32-usart.c serial: stm32: Ignore return value of uart_remove_one_port() in .remove() 2023-08-23 17:52:23 +02:00
stm32-usart.h serial: stm32: make info structs static to avoid sparse warnings 2022-07-28 10:35:23 +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: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sunplus-uart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sunsab.c serial: sunsab: Fix error handling in sunsab_init() 2022-12-31 13:32:40 +01:00
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 serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
sunzilog.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
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 Merge 7e2cd21e02 ("Merge tag 'tty-6.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next 2022-09-25 09:22:13 +02:00
timbuart.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
timbuart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
uartlite.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
ucc_uart.c serial: ucc_uart: Remove custom frame size calculation 2022-08-30 14:28:33 +02:00
vt8500_serial.c tty: serial: move and cleanup vt8500_tx_empty() 2022-09-22 16:14:07 +02:00
xilinx_uartps.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
zs.c serial: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
zs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00