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| author | Jonas Gorski <jonas.gorski@gmail.com> | 2024-06-06 21:56:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-24 16:14:48 +0200 |
| commit | 9bb43b9e8d9a288a214e9b17acc9e46fda3977cf (patch) | |
| tree | e6c8cc8a2242ccbe46a0d70018123fbd14f969c8 /include | |
| parent | Revert "serial: core: only stop transmit when HW fifo is empty" (diff) | |
| download | linux-9bb43b9e8d9a288a214e9b17acc9e46fda3977cf.tar.xz linux-9bb43b9e8d9a288a214e9b17acc9e46fda3977cf.zip | |
serial: core: introduce uart_port_tx_limited_flags()
Analogue to uart_port_tx_flags() introduced in commit 3ee07964d407
("serial: core: introduce uart_port_tx_flags()"), add a _flags variant
for uart_port_tx_limited().
Fixes: d11cc8c3c4b6 ("tty: serial: use uart_port_tx_limited()")
Cc: stable@vger.kernel.org
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Doug Brown <doug@schmorgal.com>
Link: https://lore.kernel.org/r/20240606195632.173255-3-doug@schmorgal.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/serial_core.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3fb9a29e025f..aea25eef9a1a 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -851,6 +851,24 @@ enum UART_TX_FLAGS { }) /** + * uart_port_tx_limited_flags -- transmit helper for uart_port with count limiting with flags + * @port: uart port + * @ch: variable to store a character to be written to the HW + * @flags: %UART_TX_NOSTOP or similar + * @count: a limit of characters to send + * @tx_ready: can HW accept more data function + * @put_char: function to write a character + * @tx_done: function to call after the loop is done + * + * See uart_port_tx_limited() for more details. + */ +#define uart_port_tx_limited_flags(port, ch, flags, count, tx_ready, put_char, tx_done) ({ \ + unsigned int __count = (count); \ + __uart_port_tx(port, ch, flags, tx_ready, put_char, tx_done, __count, \ + __count--); \ +}) + +/** * uart_port_tx -- transmit helper for uart_port * @port: uart port * @ch: variable to store a character to be written to the HW |