Sherry Sun e8915faa9f tty: serial: fsl_lpuart: don't break the on-going transfer when global reset ...

[ Upstream commit 76bad3f887 ]

lpuart_global_reset() shouldn't break the on-going transmit engine, need
to recover the on-going data transfer after reset.

This can help earlycon here, since commit 60f361722a ("serial:
fsl_lpuart: Reset prior to registration") moved lpuart_global_reset()
before uart_add_one_port(), earlycon is writing during global reset,
as global reset will disable the TX and clear the baud rate register,
which caused the earlycon cannot work any more after reset, needs to
restore the baud rate and re-enable the transmitter to recover the
earlycon write.

Also move the lpuart_global_reset() down, then we can reuse the
lpuart32_tx_empty() without declaration.

Fixes: bd5305dcab ("tty: serial: fsl_lpuart: do software reset for imx7ulp and imx8qxp")
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20221024085844.22786-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-12-02 17:40:59 +01:00

..

hvc

tty: hvc: fix return value of __setup handler

2022-04-08 14:23:50 +02:00

ipwireless

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

serdev

Merge tag 'tty-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2021-09-01 09:51:16 -07:00

serial

tty: serial: fsl_lpuart: don't break the on-going transfer when global reset

2022-12-02 17:40:59 +01:00

vt

vt: Clear selection before changing the font

2022-09-08 12:28:03 +02:00

amiserial.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

ehv_bytechan.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

goldfish.c

tty: drivers/tty/, stop using tty_schedule_flip()

2022-07-29 17:25:31 +02:00

Kconfig

Merge tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2021-07-09 10:19:13 -07:00

Makefile

tty: remove broken r3964 line discipline

2021-05-13 16:57:15 +02:00

mips_ejtag_fdc.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

moxa.c

tty: drivers/tty/, stop using tty_schedule_flip()

2022-07-29 17:25:31 +02:00

moxa.h

tty: fix spelling mistake

2020-06-27 16:21:20 +02:00

mxser.c

mxser: fix xmit_buf leak in activate when LSR == 0xff

2022-04-08 14:23:43 +02:00

n_gsm.c

tty: n_gsm: fix sleep-in-atomic-context bug in gsm_control_send

2022-11-26 09:24:35 +01:00

n_hdlc.c

tty: n_hdlc: make n_hdlc_tty_wakeup() asynchronous

2021-12-22 09:32:45 +01:00

n_null.c

tty: make tty_ldisc_ops a param in tty_unregister_ldisc

2021-05-13 16:57:16 +02:00

n_tty.c

tty: n_tty: Restore EOF push handling behavior

2022-06-14 18:36:03 +02:00

nozomi.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

pty.c

tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()

2022-07-29 17:25:32 +02:00

synclink_gt.c

tty: synclink_gt: Fix null-pointer-dereference in slgt_clean()

2022-06-14 18:36:20 +02:00

sysrq.c

sysrq: do not omit current cpu when showing backtrace of all active CPUs

2022-06-14 18:36:21 +02:00

tty_audit.c

tty: audit: move some local functions out of tty.h

2021-04-15 10:24:58 +02:00

tty_baudrate.c

tty: tty_baudrate: Fix coding style issues of block comments

2021-05-13 18:29:12 +02:00

tty_buffer.c

tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()

2022-07-29 17:25:32 +02:00

tty_io.c

tty: Fix data race between tiocsti() and flush_to_ldisc()

2021-08-26 14:51:38 +02:00

tty_ioctl.c

tty: make tty_get_{char,frame}_size available

2021-06-15 14:03:26 +02:00

tty_jobctrl.c

tty: tty_jobctrl: Fix 2 incorrectly documented functions

2021-05-20 17:06:15 +02:00

tty_ldisc.c

tty: unexport tty_ldisc_release

2021-09-14 11:18:47 +02:00

tty_ldsem.c

…

tty_mutex.c

tty: move some internal tty lock enums and functions out of tty.h

2021-04-15 10:26:58 +02:00

tty_port.c

tty: tty_port: Fix coding style issues of block comments

2021-05-13 18:29:13 +02:00

tty.h

tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()

2022-07-29 17:25:32 +02:00

ttynull.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00

vcc.c

tty: drop put_tty_driver

2021-07-27 12:17:21 +02:00