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linux/drivers/tty
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Sherry Sun bbadf50383 tty: serial: fsl_lpuart: disable transmitter before changing RS485 related registers 
[ Upstream commit f5cb528d64 ]

According to the LPUART reference manual, TXRTSE and TXRTSPOL of MODIR
register only can be changed when the transmitter is disabled.
So disable the transmitter before changing RS485 related registers and
re-enable it after the change is done.

Fixes: 67b0183786 ("tty: serial: lpuart: Add RS485 support for 32-bit uart flavour")
Cc: stable <stable@kernel.org>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250312022503.1342990-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-04-10 14:33:41 +02:00
..
hvc hvc/xen: fix event channel handling for secondary consoles 2023-11-28 17:07:08 +00:00
ipwireless tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
serdev tty: Replace acpi_bus_get_device() 2022-01-31 14:30:06 +01:00
serial tty: serial: fsl_lpuart: disable transmitter before changing RS485 related registers 2025-04-10 14:33:41 +02:00
vt vt: prevent kernel-infoleak in con_font_get() 2024-11-08 16:26:48 +01:00
amiserial.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
ehv_bytechan.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
goldfish.c tty: goldfish: Fix free_irq() on remove 2022-06-10 13:31:31 +02:00
Kconfig tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
Makefile tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
mips_ejtag_fdc.c serial: Convert SERIAL_XMIT_SIZE to UART_XMIT_SIZE 2022-06-27 14:41:31 +02:00
moxa.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mxser.c tty: mxser: remove redundant assignment to hwid 2022-09-01 17:59:36 +02:00
n_gsm.c tty: n_gsm: Fix use-after-free in gsm_cleanup_mux 2024-10-22 15:56:50 +02:00
n_hdlc.c tty: n_hdlc: remove HDLC_MAGIC 2022-09-22 16:12:34 +02:00
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: Fix buffer offsets when lookahead is used 2024-06-21 14:35:43 +02:00
nozomi.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
pty.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
rpmsg_tty.c tty: rpmsg: Fix race condition releasing tty port 2022-01-26 14:50:26 +01:00
synclink_gt.c tty: synclink_gt: remove MGSL_MAGIC 2022-09-22 16:12:34 +02:00
sysrq.c tty/sysrq: replace smp_processor_id() with get_cpu() 2023-11-28 17:07:08 +00:00
tty.h tty: change tty_write_lock()'s ndelay parameter to bool 2024-01-25 15:27:47 -08:00
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: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: Fix lookahead_buf crash with serdev 2022-08-30 14:31:53 +02:00
tty_io.c usb: cdc-acm: return correct error code on unsupported break 2024-01-25 15:27:47 -08:00
tty_ioctl.c tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE 2024-02-05 20:12:58 +00:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-11-20 11:52:09 +01:00
tty_ldisc.c tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler 2024-12-14 19:53:59 +01:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: Implement lookahead to process XON/XOFF timely 2022-06-10 13:51:31 +02:00
ttynull.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
vcc.c tty: vcc: Add check for kstrdup() in vcc_probe() 2023-11-28 17:07:01 +00:00