Hugo Villeneuve b35f8dbbce serial: max310x: prevent infinite while() loop in port startup ...

If there is a problem after resetting a port, the do/while() loop that
checks the default value of DIVLSB register may run forever and spam the
I2C bus.

Add a delay before each read of DIVLSB, and a maximum number of tries to
prevent that situation from happening.

Also fail probe if port reset is unsuccessful.

Fixes: 10d8b34a42 ("serial: max310x: Driver rework")
Cc: stable@vger.kernel.org
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20240116213001.3691629-5-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-01-27 19:09:10 -08:00

..

hvc

Merge tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-01-20 11:06:04 -08:00

ipwireless

tty: ipwireless: remove unused ipw_dev::attribute_memory

2023-11-23 19:16:03 +00:00

serdev

serdev: Remove usage of the deprecated ida_simple_xx() API

2023-12-15 14:20:06 +01:00

serial

serial: max310x: prevent infinite while() loop in port startup

2024-01-27 19:09:10 -08:00

vt

drivers/tty/vt: use standard array-copy-functions

2023-11-25 07:23:16 +00:00

amiserial.c

tty: ami: use u8 for characters and flag

2023-12-08 12:02:37 +01:00

ehv_bytechan.c

tty: ehv_bytechan: convert to u8 and size_t

2023-12-08 12:02:37 +01:00

goldfish.c

tty: goldfish: convert to u8 and size_t

2023-12-08 12:02:37 +01:00

Kconfig

…

Makefile

…

mips_ejtag_fdc.c

tty: mips_ejtag_fdc: use u8 for character pointers

2023-12-08 12:02:37 +01:00

moxa.c

tty: moxa: convert to u8 and size_t

2023-12-08 12:02:38 +01:00

mxser.c

tty: mxser: convert to u8 and size_t

2023-12-08 12:02:38 +01:00

n_gsm.c

tty: n_gsm: convert to u8 and size_t

2023-12-08 12:02:38 +01:00

n_hdlc.c

tty: n_hdlc: convert to u8 and size_t

2023-12-08 12:02:38 +01:00

n_null.c

…

n_tty.c

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nozomi.c

tty: nozomi: convert to u8 and size_t

2023-12-08 12:02:38 +01:00

pty.c

…

rpmsg_tty.c

…

synclink_gt.c

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sysrq.c

/proc/sysrq-trigger: accept multiple keys at once

2023-11-25 07:23:16 +00:00

tty_audit.c

…

tty_baudrate.c

…

tty_buffer.c

…

tty_io.c

Merge tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2024-01-18 11:43:55 -08:00

tty_ioctl.c

tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE

2023-12-15 14:20:03 +01:00

tty_jobctrl.c

…

tty_ldisc.c

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tty_ldsem.c

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tty_mutex.c

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tty_port.c

tty: switch tty_port::xmit_* to u8

2023-12-08 12:02:37 +01:00

tty.h

…

ttynull.c

…

vcc.c

…