serial: core: introduce uart_port_tx_flags()

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And an enum with a flag: UART_TX_NOSTOP. To NOT call
__port->ops->stop_tx() when the circular buffer is empty. mxs-uart needs
this (see the next patch).

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: stable <stable@kernel.org>
Tested-by: Emil Kronborg <emil.kronborg@protonmail.com>
Link: https://lore.kernel.org/r/20240201105557.28043-1-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jiri Slaby (SUSE) 2024-02-01 11:55:56 +01:00 • committed by Greg Kroah-Hartman

parent 720e78d7fa

commit 3ee07964d4

1 changed files with 27 additions and 5 deletions

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32

include/linux/serial_core.h

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