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2dbc42f554b371c19f31fdf8d5c477fc4cb7e040
linux-bredos/drivers/tty/serial
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Jiri Slaby (SUSE) 1d8c1add5e serial: don't use uninitialized value in uart_poll_init() 
[ Upstream commit d0009a32c9 ]

Coverity reports (as CID 1536978) that uart_poll_init() passes
uninitialized pm_state to uart_change_pm(). It is in case the first 'if'
takes the true branch (does "goto out;").

Fix this and simplify the function by simple guard(mutex). The code
needs no labels after this at all. And it is pretty clear that the code
has not fiddled with pm_state at that point.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Fixes: 5e227ef2aa (serial: uart_poll_init() should power on the UART)
Cc: stable@vger.kernel.org
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20240805102046.307511-4-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-10-04 16:29:58 +02:00
..
8250
serial: 8250: omap: Cleanup on error in request_irq
2024-10-04 16:29:40 +02:00
jsm
…
21285.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
altera_jtaguart.c
serial: altera_jtaguart: switch status to u32
2023-07-31 17:16:05 +02:00
altera_uart.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
amba-pl010.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
amba-pl011.c
serial: amba-pl011: Fix DMA transmission in RS485 mode
2024-03-01 13:35:02 +01:00
apbuart.c
serial: apbuart: fix console prompt on qemu
2024-01-25 15:35:55 -08:00
apbuart.h
…
ar933x_uart.c
serial: ar933x: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:25:52 +02:00
arc_uart.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
atmel_serial.c
tty: atmel_serial: use the correct RTS flag.
2024-08-29 17:33:10 +02:00
atmel_serial.h
…
bcm63xx_uart.c
serial: bcm63xx-uart: fix tx after conversion to uart_port_tx_limited()
2024-07-05 09:34:00 +02:00
clps711x.c
serial: clps711x: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:25:52 +02:00
cpm_uart.c
serial: cpm_uart: Remove cpm_uart/ subdirectory
2023-08-04 15:08:30 +02:00
cpm_uart.h
serial: cpm_uart: Remove cpm_uart/ subdirectory
2023-08-04 15:08:30 +02:00
digicolor-usart.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
dz.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
dz.h
…
earlycon-riscv-sbi.c
…
earlycon-semihost.c
…
earlycon.c
…
fsl_linflexuart.c
serial: linflexuart: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:25:52 +02:00
fsl_lpuart.c
tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
2024-08-29 17:33:10 +02:00
icom.c
…
imx_earlycon.c
…
imx.c
serial: imx: Raise TX trigger level to 8
2024-07-11 12:49:09 +02:00
ip22zilog.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
ip22zilog.h
…
Kconfig
Merge tag 'tty-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
2023-07-03 13:14:58 -07:00
kgdb_nmi.c
tty: make tty_operations::write()'s count size_t
2023-08-11 21:12:46 +02:00
kgdboc.c
serial: kgdboc: Fix NMI-safety problems from keyboard reset code
2024-05-25 16:22:54 +02:00
lantiq.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
liteuart.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
lpc32xx_hs.c
…
ma35d1_serial.c
tty: serial: ma35d1: Add a NULL check for of_node
2024-07-18 13:21:21 +02:00
Makefile
serial: cpm_uart: Remove cpm_uart/ subdirectory
2023-08-04 15:08:30 +02:00
max310x.c
serial: max310x: fix NULL pointer dereference in I2C instantiation
2024-04-03 15:28:16 +02:00
max3100.c
serial: max3100: Fix bitwise types
2024-06-12 11:12:17 +02:00
mcf.c
tty: mcf: MCF54418 has 10 UARTS
2024-07-05 09:34:00 +02:00
men_z135_uart.c
…
meson_uart.c
tty: serial: meson: fix hard LOCKUP on crtscts mode
2023-11-28 17:19:57 +00:00
milbeaut_usio.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
mpc52xx_uart.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
mps2-uart.c
serial: mps2-uart: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:26:06 +02:00
msm_serial.c
…
mux.c
…
mvebu-uart.c
serial: mvebu-uart: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:26:07 +02:00
mxs-auart.c
serial: mxs-auart: add spinlock around changing cts state
2024-04-27 17:11:39 +02:00
omap-serial.c
serial: omap: do not override settings for RS485 support
2024-01-25 15:35:44 -08:00
owl-uart.c
…
pch_uart.c
…
pic32_uart.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
pmac_zilog.c
serial/pmac_zilog: Remove flawed mitigation for rx irq flood
2024-04-27 17:11:39 +02:00
pmac_zilog.h
…
pxa.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
qcom_geni_serial.c
serial: qcom-geni: fix fifo polling timeout
2024-10-04 16:29:51 +02:00
rda-uart.c
…
rp2.c
tty: rp2: Fix reset with non forgiving PCIe host bridges
2024-10-04 16:29:51 +02:00
sa1100.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
samsung_tty.c
tty: serial: samsung: fix tx_empty() to return TIOCSER_TEMT
2024-03-26 18:20:05 -04:00
sb1250-duart.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
sc16is7xx.c
serial: sc16is7xx: fix bug in sc16is7xx_set_baud() when using prescaler
2024-06-12 11:12:35 +02:00
sccnxp.c
serial: sccnxp: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:26:07 +02:00
serial_base_bus.c
serial: core: Fix serial core port id, including multiport devices
2023-08-11 21:19:22 +02:00
serial_base.h
serial: core: Fix missing shutdown and startup for serial base port
2024-04-27 17:11:39 +02:00
serial_core.c
serial: don't use uninitialized value in uart_poll_init()
2024-10-04 16:29:58 +02:00
serial_ctrl.c
…
serial_mctrl_gpio.c
…
serial_mctrl_gpio.h
…
serial_port.c
serial: port: Introduce a common helper to read properties
2024-06-21 14:38:49 +02:00
serial_txx9.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
serial-tegra.c
serial: tegra: handle clk prepare error in tegra_uart_hw_init()
2023-08-22 15:29:18 +02:00
sh-sci.c
serial: sh-sci: protect invalidating RXDMA on shutdown
2024-06-12 11:12:30 +02:00
sh-sci.h
…
sifive.c
serial: sifive: Add suspend and resume operations
2023-08-22 15:29:10 +02:00
sprd_serial.c
serial: sprd: Fix DMA buffer leak issue
2023-07-30 13:53:55 +02:00
st-asc.c
drivers:tty: fix return value check in asc_init_port
2023-07-30 13:53:19 +02:00
stm32-usart.c
serial: stm32: Reset .throttled state in .startup()
2024-04-27 17:11:39 +02:00
stm32-usart.h
serial: stm32: group dma pause/resume error handling into single function
2023-08-22 15:28:51 +02:00
suncore.c
…
sunhv.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
sunplus-uart.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
sunsab.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
sunsab.h
…
sunsu.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
sunzilog.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
sunzilog.h
…
tegra-tcu.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
timbuart.c
…
timbuart.h
…
uartlite.c
tty: Explicitly include correct DT includes
2023-07-25 20:19:05 +02:00
ucc_uart.c
serial: cpm_uart: Don't include fs_uart_pd.h when not needed
2023-08-04 15:08:55 +02:00
vt8500_serial.c
serial: vt8500: Use devm_platform_get_and_ioremap_resource()
2023-07-25 20:26:06 +02:00
xilinx_uartps.c
tty: serial: xilinx_uartps: Do not check for 0 return after calling platform_get_irq()
2023-08-04 15:06:01 +02:00
zs.c
serial: drivers: switch ch and flag to u8
2023-07-25 19:21:04 +02:00
zs.h
…