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zephyr/drivers/serial
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Julien D'ascenzio e4234aeb89 drivers/uart: stm32: fix dead lock on poll_out 
A dead lock could happen if 2 threads with differents priorities use
poll_out. In fact, the lock data->tx_lock could be lock by a thread with
lower priority and then a thread with higher priority can't take the
lock. There was a race condition here:

/* Wait for TXE flag to be raised */
while (1) {
	if (atomic_cas(&data->tx_lock, 0, 1)) {
		/* !!!!!!!! RACE CONDITION !!!!!!!!!!!!!!
		if (LL_USART_IsActiveFlag_TXE(UartInstance)) {
			break;
		}
		atomic_set(&data->tx_lock, 0);
	}
}

To fix race condition, the interrupts are locked in poll_out.

Signed-off-by: Julien D'ascenzio <julien.dascenzio@paratronic.fr>
2021-12-08 08:56:18 -05:00
..
CMakeLists.txt xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 2021-12-07 12:15:38 -05:00
Kconfig ITE: drivers/serial: add the UART driver for the PM callback function 2021-11-16 21:23:42 -05:00
Kconfig.altera_jtag drivers: uart_altera_jtag_hal: use DEVICE_DT_INST_DEFINE() 2021-08-23 18:53:47 -04:00
Kconfig.apbuart serial: apbuart interrupt support 2020-11-13 14:53:55 -08:00
Kconfig.b91 drivers: serial: introduce new Telink B91 Serial driver 2021-07-21 05:37:12 -04:00
Kconfig.cc13xx_cc26xx
Kconfig.cc32xx
Kconfig.cmsdk_apb
Kconfig.esp32 drivers: esp32: uart: use hal functions 2021-11-03 16:47:32 -04:00
Kconfig.gd32 drivers: serial: gd32 usart add interrupt support 2021-11-23 13:25:43 -05:00
Kconfig.gecko
Kconfig.imx
Kconfig.it8xxx2 ITE: drivers/serial: add the UART driver for the PM callback function 2021-11-16 21:23:42 -05:00
Kconfig.leuart_gecko
Kconfig.litex
Kconfig.lpc11u6x
Kconfig.mcux
Kconfig.mcux_flexcomm
Kconfig.mcux_iuart drivers: serial: Add NXP IUART driver 2020-08-14 14:51:50 -05:00
Kconfig.mcux_lpsci
Kconfig.mcux_lpuart
Kconfig.miv drivers: serial: uart_miv: Fix build errors 2021-05-10 13:15:50 -05:00
Kconfig.msp432p4xx
Kconfig.native_posix drivers: serial: native_posix: Convert 2nd UART to be devicetree based 2021-02-18 09:06:21 +01:00
Kconfig.neorv32 drivers: serial: neorv32: use shared serial driver init priority 2021-10-19 06:44:46 -04:00
Kconfig.npcx driver: npcx7: fixed typo in Kconfig.npcx files. 2020-12-07 12:11:17 -05:00
Kconfig.nrfx drivers: serial: nrf_uarte: Conditionally call PPI driver 2021-05-07 12:11:32 +02:00
Kconfig.ns16550 uart: ns16550: add workaround to re-enable interrupts in ISR 2021-10-04 20:49:13 -04:00
Kconfig.numicro driver: serial: replace suffix nuvoton with numicro 2021-08-07 20:37:24 -04:00
Kconfig.pl011 drivers: pl011: add SBSA mode 2021-01-24 13:59:55 -05:00
Kconfig.psoc6 drivers: serial: psoc6: Add interrupts support 2021-04-27 09:27:45 -05:00
Kconfig.rcar drivers: uart: Add "Interrupt driven" to R-Car 2021-07-13 09:42:22 -04:00
Kconfig.rtt tracing: fix conflict with RTT locking 2021-05-25 07:36:38 -05:00
Kconfig.rv32m1_lpuart
Kconfig.sam0
Kconfig.sifive uart: sifive: align txcnt of UART1 with UART0 2021-12-02 11:42:46 -06:00
Kconfig.stellaris
Kconfig.stm32 drivers: dma: stm32 dma driver for a new dma version 2021-07-22 04:52:53 -04:00
Kconfig.test drivers: serial: add a dummy driver for vnd,serial 2021-07-14 11:10:08 -05:00
Kconfig.uart_sam
Kconfig.usart_sam
Kconfig.xec Microchip: MEC172x: Add UART driver 2021-08-09 16:21:33 -04:00
Kconfig.xen xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 2021-12-07 12:15:38 -05:00
Kconfig.xlnx drivers: serial: xlnx_xuartps: enable this driver for Zynq-7000 series SoCs 2021-10-28 15:26:50 +02:00
Kconfig.xmc4xxx
leuart_gecko.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
serial_test.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_altera_jtag_hal.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_apbuart.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_b91.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_cc13xx_cc26xx.c drivers: use new PM macros 2021-11-19 10:11:32 +01:00
uart_cc32xx.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_cmsdk_apb.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_esp32.c drivers: uart: esp32: set device to initialize pre-kernel 2021-11-09 15:18:15 -05:00
uart_gecko.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_handlers.c uart: add API support for wide data 2021-11-09 19:44:38 -05:00
uart_hvc_xen_consoleio.c xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 2021-12-07 12:15:38 -05:00
uart_hvc_xen.c xenvm: drivers: serial: add interrupt-driven API for Xen PV console 2021-12-07 12:15:38 -05:00
uart_imx.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_ite_it8xxx2.c drivers: use new PM macros 2021-11-19 10:11:32 +01:00
uart_liteuart.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_lpc11u6x.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_lpc11u6x.h device: Const-ify all device driver instance pointers 2020-09-02 13:48:13 +02:00
uart_mchp_xec.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_mcux_flexcomm.c drivers: use DT_INST_ENUM_IDX(_OR) macros 2021-11-18 19:12:07 -05:00
uart_mcux_iuart.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_mcux_lpsci.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_mcux_lpuart.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_mcux.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_miv.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_msp432p4xx.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_native_posix.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_neorv32.c device: remove inclusion of pm/device.h 2021-11-29 11:08:38 +01:00
uart_npcx.c driver: uart_npcx: Fix uart to use PM constrain 2021-12-01 13:49:17 -06:00
uart_nrfx_uart.c device: remove inclusion of pm/device.h 2021-11-29 11:08:38 +01:00
uart_nrfx_uarte.c device: remove inclusion of pm/device.h 2021-11-29 11:08:38 +01:00
uart_ns16550.c pm: state: PM_STATE_DT_ITEMS_LIST->PM_STATE_LIST_FROM_DT_CPU 2021-12-04 12:33:57 -05:00
uart_ns16550.h
uart_numicro.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_pl011.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_psoc6.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_rcar.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_rtt.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_rv32m1_lpuart.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_sam0.c drivers: serial: uart_sam0: fix |= incorrectly clearing all INTFLAGS. 2021-11-23 10:40:13 -05:00
uart_sam.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_sifive.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_stellaris.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_stm32.c drivers/uart: stm32: fix dead lock on poll_out 2021-12-08 08:56:18 -05:00
uart_stm32.h drivers/uart: stm32: fix dead lock on poll_out 2021-12-08 08:56:18 -05:00
uart_xlnx_ps.c drivers: serial: xlnx_xuartps: Fix interrupt-driven operation 2021-10-28 15:26:50 +02:00
uart_xlnx_uartlite.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
uart_xmc4xxx.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00
usart_gd32.c drivers: serial: gd32 usart add interrupt support 2021-11-23 13:25:43 -05:00
usart_sam.c drivers: serial: Refactor drivers to use shared init priority Kconfig 2021-10-17 10:58:09 -04:00