tty: serial: lpuart: only disable CTS instead of overwriting the whole UARTMODIR register

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No need to overwrite the whole UARTMODIR register before waiting the
transmit engine complete, actually our target here is only to disable
CTS flow control to avoid the dirty data in TX FIFO may block the
transmit engine complete.
Also delete the following duplicate CTS disable configuration.

Fixes: d5a2e08343 ("tty: serial: lpuart: disable flow control while waiting for the transmit engine to complete")
Cc: stable <stable@kernel.org>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20250307065446.1122482-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Sherry Sun 2025-03-07 14:54:46 +08:00 • committed by Greg Kroah-Hartman

parent 3c3cede051

commit e98ab45ec5

1 changed files with 7 additions and 5 deletions

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drivers/tty/serial/fsl_lpuart.c

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