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linux/drivers/tty/serial
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Zheyu Ma 240e126c28 tty: serial: jsm: hold port lock when reporting modem line changes 
uart_handle_dcd_change() requires a port lock to be held and will emit a
warning when lockdep is enabled.

Held corresponding lock to fix the following warnings.

[  132.528648] WARNING: CPU: 5 PID: 11600 at drivers/tty/serial/serial_core.c:3046 uart_handle_dcd_change+0xf4/0x120
[  132.530482] Modules linked in:
[  132.531050] CPU: 5 PID: 11600 Comm: jsm Not tainted 5.14.0-rc1-00003-g7fef2edf7cc7-dirty #31
[  132.535268] RIP: 0010:uart_handle_dcd_change+0xf4/0x120
[  132.557100] Call Trace:
[  132.557562]  ? __free_pages+0x83/0xb0
[  132.558213]  neo_parse_modem+0x156/0x220
[  132.558897]  neo_param+0x399/0x840
[  132.559495]  jsm_tty_open+0x12f/0x2d0
[  132.560131]  uart_startup.part.18+0x153/0x340
[  132.560888]  ? lock_is_held_type+0xe9/0x140
[  132.561660]  uart_port_activate+0x7f/0xe0
[  132.562351]  ? uart_startup.part.18+0x340/0x340
[  132.563003]  tty_port_open+0x8d/0xf0
[  132.563523]  ? uart_set_options+0x1e0/0x1e0
[  132.564125]  uart_open+0x24/0x40
[  132.564604]  tty_open+0x15c/0x630

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Link: https://lore.kernel.org/r/1626242003-3809-1-git-send-email-zheyuma97@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 12:36:48 +02:00
..
8250
serial: 8250: extend compile-test coverage
2021-07-21 12:32:12 +02:00
cpm_uart
tty: make use of tty_get_{char,frame}_size
2021-06-15 14:03:27 +02:00
jsm
tty: serial: jsm: hold port lock when reporting modem line changes
2021-07-21 12:36:48 +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: drop irq-flags initialisations
2021-05-20 16:24:05 +02:00
amba-pl011.h
…
apbuart.c
serial: apbuart: drop low-latency workaround
2021-04-22 12:09:25 +02:00
apbuart.h
…
ar933x_uart.c
serial: ar933x: drop low-latency workaround
2021-04-22 12:09:25 +02:00
arc_uart.c
tty: cumulate and document tty_struct::flow* members
2021-05-13 16:57:16 +02:00
atmel_serial.c
tty: serial: atmel: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +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
…
dz.c
tty: serial: dz: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +02:00
dz.h
…
earlycon-arm-semihost.c
…
earlycon-riscv-sbi.c
…
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: disable DMA for console and fix sysrq
2021-05-13 16:08:26 +02:00
icom.c
tty: serial: icom: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +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: Add DMA buffer configuration via DT
2021-06-04 15:11:16 +02:00
ip22zilog.c
tty: serial: ip22zilog: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
ip22zilog.h
…
Kconfig
Revert "tty: serial: Add UART driver for Cortina-Access platform"
2021-06-24 14:46:32 +02:00
kgdb_nmi.c
serial: kgdb_nmi: remove redundant initialization of variable c
2021-05-20 16:22:09 +02:00
kgdboc.c
Linux 5.8-rc6
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: Add support for earlycon
2021-05-20 16:35:01 +02:00
lpc32xx_hs.c
serial: lpc32xx_hs: drop low-latency workaround
2021-04-22 12:09:25 +02:00
Makefile
Revert "tty: serial: Add UART driver for Cortina-Access platform"
2021-06-24 14:46:32 +02:00
max310x.c
Merge 5.13-rc4 into tty-next
2021-05-31 09:44:28 +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
tty: serial: meson: retrieve port FIFO size from DT
2021-05-20 16:11:20 +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
…
msm_serial.c
serial: msm_serial: drop low-latency workaround
2021-04-22 12:09:25 +02:00
mux.c
tty: serial: mux: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
mvebu-uart.c
serial: mvebu-uart: remove unused member nb from struct mvebu_uart
2021-06-25 13:53:51 +02:00
mxs-auart.c
tty: make use of tty_get_{char,frame}_size
2021-06-15 14:03:27 +02:00
omap-serial.c
serial: drop irq-flags initialisations
2021-05-20 16:24:05 +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
tty: serial: pmac_zilog: include <linux/io.h> insteiad of <asm/io.h>
2021-05-13 18:29:12 +02:00
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
serial: qcom_geni_serial: use DT aliases according to DT bindings
2021-06-24 14:51:28 +02:00
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 set but not used variables
2021-05-13 16:10:53 +02:00
sb1250-duart.c
tty: serial: sb1250-duart: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
sc16is7xx.c
serial: sc16is7xx: Use devm_clk_get_optional()
2021-05-20 16:30:40 +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: Report magic multiplier extra baud rates
2021-07-21 12:35:01 +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
tty: serial: txx9: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +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
tty: make use of tty_get_{char,frame}_size
2021-06-15 14:03:27 +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: 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: serial: st-asc: Demote a kernel-doc formatting abuse
2021-05-20 17:06:17 +02:00
stm32-usart.c
tty: make use of tty_get_{char,frame}_size
2021-06-15 14:03:27 +02:00
stm32-usart.h
serial: stm32: add FIFO threshold configuration
2021-04-22 12:11:25 +02:00
suncore.c
…
sunhv.c
Revert "serial: sunhv: Initialize lock for non-registered console"
2020-07-21 18:21:49 +02:00
sunsab.c
tty: serial: sunsab: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
sunsab.h
…
sunsu.c
tty: serial: sunsu: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
sunzilog.c
tty: serial: sunzilog: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
sunzilog.h
…
tegra-tcu.c
serial: tegra-tcu: Reorder channel initialization
2021-06-15 14:02:06 +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
serial: tty: uartlite: fix console setup
2021-06-04 15:11:45 +02:00
ucc_uart.c
firmware: replace HOTPLUG with UEVENT in FW_ACTION defines
2021-05-13 16:14:45 +02:00
vr41xx_siu.c
tty: serial: vr41xx_siu: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:12 +02:00
vt8500_serial.c
serial: vt8500: drop low-latency workaround
2021-04-22 12:09:26 +02:00
xilinx_uartps.c
serial: Prefer unsigned int to bare use of unsigned
2021-06-24 14:51:45 +02:00
zs.c
TTY/Serial driver updates for 5.6-rc1
2020-01-29 10:13:27 -08:00
zs.h
…