fangpeina 11f06eb0f5 drivers/serial: fix deadlock when executing rexec in a user task ...

CPU0                                                  CPU1
task:nsh_main     task:user_app                       rexecd
nsh_consolemain	  system
uart_read         rexec				      ---
got recv.lock     poll			              ---
	          uart_poll       rpmsg_socket_poll   rpmsg_socket_close
wait recvsem      get recv.lock   poll_notify
                  deadlock        routine work

the error accurs in CPU0 when waiting console input

resolve: unlock recv.lock when waiting recvsem

Signed-off-by: fangpeina <fangpeina@xiaomi.com>

2024-09-14 10:27:40 +08:00

..

CMakeLists.txt

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Kconfig

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Kconfig-16550

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Kconfig-cmsdk

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Kconfig-lpuart

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Kconfig-pl011

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Kconfig-sci

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Kconfig-uart

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Kconfig-usart

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Make.defs

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ptmx.c

pty: use mutex to protect alloc minor

2024-08-25 22:16:53 +08:00

pty.c

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pty.h

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serial_cmsdk.c

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serial_dma.c

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serial_gdbstub.c

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serial_io.c

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serial.c

drivers/serial: fix deadlock when executing rexec in a user task

2024-09-14 10:27:40 +08:00

uart_16550.c

serial/uart_16550: remove up_putc spinlock

2024-09-12 18:11:30 +08:00

uart_bth4.c

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uart_bth5.c

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uart_pl011.c

serial/uart_pl011: default syslog needs to check flow control in up_putc

2024-09-12 17:15:40 +08:00

uart_ram.c

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uart_rpmsg.c

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