Sam Nobs 33f16855dc tty: serial: imx: fix potential deadlock ... Enabling the lock dependency validator has revealed that the way spinlocks are used in the IMX serial port could result in a deadlock. Specifically, imx_uart_int() acquires a spinlock without disabling the interrupts, meaning that another interrupt could come along and try to acquire the same spinlock, potentially causing the two to wait for each other indefinitely. Use spin_lock_irqsave() instead to disable interrupts upon acquisition of the spinlock. Fixes: c974991d26 ("tty:serial:imx: use spin_lock instead of spin_lock_irqsave in isr") Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sam Nobs <samuel.nobs@taitradio.com> Link: https://lore.kernel.org/r/1604955006-9363-1-git-send-email-samuel.nobs@taitradio.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-12 09:32:49 +01:00
..
8250	serial: 8250_mtk: Fix uart_get_baud_rate warning	2020-11-06 17:23:03 +01:00
cpm_uart	tty: serial: cpm_uart: Fix behaviour for non existing GPIOs	2020-06-27 13:50:51 +02:00
jsm	tty: serial: Replace HTTP links with HTTPS ones	2020-07-21 20:04:54 +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: Replace HTTP links with HTTPS ones	2020-07-21 20:04:54 +02:00
altera_uart.c
amba-pl010.c
amba-pl011.c	serial: pl011: Fix lockdep splat when handling magic-sysrq interrupt	2020-09-30 14:31:04 +02:00
amba-pl011.h
apbuart.c
apbuart.h
ar933x_uart.c	serial: Allow uart_get_rs485_mode() to return errno	2020-05-15 14:47:05 +02:00
arc_uart.c
atmel_serial.c	Linux 5.9-rc3	2020-08-31 07:19:25 +02:00
atmel_serial.h
bcm63xx_uart.c	Revert "tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart"	2020-05-04 11:49:57 +02:00
clps711x.c
digicolor-usart.c
dz.c
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c	tty: serial: print earlycon info after match->setup	2020-09-16 13:16:20 +02:00
efm32-uart.c
fsl_linflexuart.c
fsl_lpuart.c	tty: serial: fsl_lpuart: LS1021A has a FIFO size of 16 words, like LS1028A	2020-10-28 13:40:25 +01:00
icom.c	tty: serial: icom: switch from 'pci_' to 'dma_' API	2020-09-04 18:07:20 +02:00
icom.h
ifx6x60.c	tty: serial, fix kernel-doc	2020-08-18 13:51:18 +02:00
ifx6x60.h
imx_earlycon.c	tty: serial: imx: add imx earlycon driver	2020-07-29 17:11:02 +02:00
imx.c	tty: serial: imx: fix potential deadlock	2020-11-12 09:32:49 +01:00
ip22zilog.c
ip22zilog.h
Kconfig	tty: serial: imx: enable earlycon by default if IMX_SERIAL_CONSOLE is enabled	2020-11-06 17:23:49 +01:00
kgdb_nmi.c	kdb: Switch to use safer dbg_io_ops over console APIs	2020-06-26 15:40:16 +01:00
kgdboc.c	Linux 5.8-rc6	2020-07-20 09:39:11 +02:00
lantiq.c	serial: lantiq: Make driver modular	2020-05-15 12:22:19 +02:00
lpc32xx_hs.c
Makefile	tty: serial: imx: add dependence and build for earlycon	2020-08-18 13:54:34 +02:00
max310x.c	serial: max310x: rework RX interrupt handling	2020-10-01 10:57:50 +02:00
max3100.c
mcf.c	serial: mcf: add sysrq capability	2020-10-05 13:32:30 +02:00
men_z135_uart.c	tty: serial, fix kernel-doc	2020-08-18 13:51:18 +02:00
meson_uart.c
milbeaut_usio.c
mpc52xx_uart.c
mps2-uart.c
msm_serial.c	serial: msm_serial: add sparse context annotation	2020-07-24 10:44:27 +02:00
mux.c
mvebu-uart.c	serial: mvebu-uart: fix unused variable warning	2020-09-29 12:56:39 +02:00
mxs-auart.c	serial: mxs-auart: add missed iounmap() in probe failure and remove	2020-07-10 14:44:46 +02:00
omap-serial.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
owl-uart.c	tty: serial: owl: add "much needed" clk_prepare_enable()	2020-04-23 15:46:30 +02:00
pch_uart.c	pch_uart: drop double zeroing	2020-09-27 14:17:43 +02:00
pic32_uart.c
pic32_uart.h
pmac_zilog.c	serial: pmac_zilog: use for_each_child_of_node() macro	2020-09-16 13:20:09 +02:00
pmac_zilog.h
pnx8xxx_uart.c
pxa.c
qcom_geni_serial.c	serial: qcom_geni_serial: To correct QUP Version detection logic	2020-09-30 09:12:03 +02:00
rda-uart.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
rp2.c
sa1100.c	serial: sa1100: use platform_get_resource()	2020-08-18 15:02:06 +02:00
samsung_tty.c	serial: samsung: Removes the IRQ not found warning	2020-08-18 13:53:42 +02:00
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: Set iobase to device index	2020-09-04 17:14:47 +02:00
sccnxp.c
serial_core.c	Merge 5.9.0-rc6 into tty-next	2020-09-21 09:23:55 +02:00
serial_mctrl_gpio.c
serial_mctrl_gpio.h
serial_txx9.c	serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init	2020-11-06 17:24:41 +01:00
serial-tegra.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
sh-sci.c	Revert "serial: sh-sci: Initialize spinlock for uart console"	2020-07-21 18:21:49 +02:00
sh-sci.h
sifive.c	Revert "tty: serial: add missing spin_lock_init for SiFive serial console"	2020-07-21 18:21:49 +02:00
sirfsoc_uart.c
sirfsoc_uart.h
sprd_serial.c
st-asc.c
stm32-usart.c	serial: stm32: Add RS485 RTS GPIO control again	2020-09-04 17:16:40 +02:00
stm32-usart.h	tty: serial: Add modem control gpio support for STM32 UART	2020-05-15 12:24:15 +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	serial: sunsab: Return proper error code from console ->setup() hook	2020-06-25 14:21:28 +02:00
sunsab.h
sunsu.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
sunzilog.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
sunzilog.h
tegra-tcu.c
timbuart.c	tty: timbuart: convert tasklets to use new tasklet_setup() API	2020-08-18 13:33:13 +02:00
timbuart.h
uartlite.c	tty: serial: uartlite: Replace HTTP links with HTTPS ones	2020-07-21 20:04:54 +02:00
ucc_uart.c	serial: ucc_uart: make qe_uart_set_mctrl() static	2020-09-16 13:14:58 +02:00
vr41xx_siu.c
vt8500_serial.c
xilinx_uartps.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
zs.c
zs.h