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410e302ea53f095f5d94dc14efefe8191bde901b
linux/drivers/tty/serial
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Andy Shevchenko 7c3e8d9df2 serial: 8250_exar: Avoid NULL pointer dereference at ->exit() 
It's possible that during ->exit() the private_data is NULL,
for instance when there was no GPIO device instantiated.
Due to this we may not dereference it. Add a respective check.

Note, for now ->exit() only makes sense when GPIO device
was instantiated, that's why we may use the check for entire
function.

Fixes: 81171e7d31 ("serial: 8250_exar: Constify the software nodes")
Reported-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20210608144239.12697-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-09 14:40:48 +02:00
..
8250
serial: 8250_exar: Avoid NULL pointer dereference at ->exit()
2021-06-09 14:40:48 +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: drop low-latency workaround
2021-04-22 12:09:24 +02:00
altera_uart.c
serial: altera_uart: drop low-latency workaround
2021-04-22 12:09:24 +02:00
amba-pl010.c
serial: amba-pl010: drop low-latency workaround
2021-04-22 12:09:24 +02:00
amba-pl011.c
serial: amba-pl011: drop low-latency workaround
2021-04-22 12:09:24 +02:00
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
serial: apbuart: drop low-latency workaround
2021-04-22 12:09:25 +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: drop low-latency workaround
2021-04-22 12:09:25 +02:00
arc_uart.c
serial: arc_uart: drop low-latency workaround
2021-04-22 12:09:25 +02:00
atmel_serial.c
serial: atmel_serial: drop low-latency workaround
2021-04-22 12:09:25 +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
serial: bcm63xx: drop low-latency workaround
2021-04-22 12:09:25 +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
serial: icom: drop low-latency workaround
2021-04-22 12:09:25 +02:00
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
serial: extend compile-test coverage
2021-04-22 13:12:13 +02:00
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
serial: lpc32xx_hs: drop low-latency workaround
2021-04-22 12:09:25 +02:00
Makefile
serial: ifx6x60: Remove driver for deprecated platform
2021-01-26 19:21:49 +01:00
max310x.c
serial: max310x: unregister uart driver in case of failure and abort
2021-05-13 17:30:21 +02:00
max3100.c
tty_port: drop last traces of low_latency
2021-01-07 16:17:32 +01:00
mcf.c
serial: mcf: drop low-latency workaround
2021-04-22 12:09:25 +02:00
men_z135_uart.c
tty: serial, fix kernel-doc
2020-08-18 13:51:18 +02:00
meson_uart.c
serial: meson: drop low-latency workaround
2021-04-22 12:09:25 +02:00
milbeaut_usio.c
tty/serial: Migrate milbeaut_usio to use has_sysrq
2019-12-18 15:04:51 +01:00
mpc52xx_uart.c
serial: mpc52xx_uart: drop low-latency workaround
2021-04-22 12:09:25 +02:00
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
serial: msm_serial: drop low-latency workaround
2021-04-22 12:09:25 +02:00
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
Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference"
2021-05-13 17:30:04 +02:00
mxs-auart.c
serial: mxs-auart: Remove <asm/cacheflush.h>
2021-01-20 18:48:19 +01:00
omap-serial.c
serial: omap: fix rs485 half-duplex filtering
2021-04-22 12:07:07 +02:00
owl-uart.c
serial: owl: drop low-latency workaround
2021-04-22 12:09:25 +02:00
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
Merge tag 'pm-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2021-04-26 15:10:25 -07:00
rda-uart.c
serial: rda: drop low-latency workaround
2021-04-22 12:09:26 +02:00
rp2.c
serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
2021-05-21 20:34:02 +02:00
sa1100.c
serial: sa1100: drop low-latency workaround
2021-04-22 12:09:26 +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: fix suspicious security_locked_down() call
2021-05-13 17:08:04 +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: drop low-latency workaround
2021-04-22 12:09:26 +02:00
serial-tegra.c
serial: tegra: Fix a mask operation that is always true
2021-05-13 17:07:43 +02:00
sh-sci.c
serial: sh-sci: Fix off-by-one error in FIFO threshold register setting
2021-05-13 17:08:29 +02:00
sh-sci.h
serial: sh-sci: Drop unused include
2020-04-16 16:13:34 +02:00
sifive.c
serial: sifive: drop low-latency workaround
2021-04-22 12:09:26 +02:00
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 FIFO threshold configuration
2021-04-22 12:11:25 +02:00
stm32-usart.h
serial: stm32: add FIFO threshold configuration
2021-04-22 12:11:25 +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
serial: sunsu: drop low-latency workaround
2021-04-22 12:09:26 +02:00
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
serial: timbuart: drop low-latency workaround
2021-04-22 12:09:26 +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
tty: serial: ucc_uart: replace qe_io{read,write}* wrappers by generic io{read,write}*
2021-04-06 15:40:42 -05:00
vr41xx_siu.c
tty/serial: Migrate vr41xx_siu to use has_sysrq
2019-12-18 15:05:09 +01:00
vt8500_serial.c
serial: vt8500: drop low-latency workaround
2021-04-22 12:09:26 +02:00
xilinx_uartps.c
serial: xilinx_uartps: drop low-latency workaround
2021-04-22 12:09:26 +02:00
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