diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2022-09-20 07:20:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-22 16:14:07 +0200 |
| commit | d9c128117da41cf4cb0e80ae565b5d3ac79dffac (patch) | |
| tree | aad6c3ed5eb55d8b42bf5e1f0fb6c4c75dd432ec /drivers/tty | |
| parent | 0c0bfc6b14388356ce6016b9d548ac8b874013e0 (diff) | |
| download | linux-d9c128117da41cf4cb0e80ae565b5d3ac79dffac.tar.gz | |
tty: serial: clean up stop-tx part in altera_uart_tx_chars()
The "stop TX" path in altera_uart_tx_chars() is open-coded, so:
* use uart_circ_empty() to check if the buffer is empty, and
* when true, call altera_uart_stop_tx().
Cc: Tobias Klauser <tklauser@distanz.ch>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Acked-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220920052049.20507-3-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/altera_uart.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c index a38db2cb8dc1..4170e66601ec 100644 --- a/drivers/tty/serial/altera_uart.c +++ b/drivers/tty/serial/altera_uart.c @@ -272,10 +272,8 @@ static void altera_uart_tx_chars(struct altera_uart *pp) if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); - if (xmit->head == xmit->tail) { - pp->imr &= ~ALTERA_UART_CONTROL_TRDY_MSK; - altera_uart_update_ctrl_reg(pp); - } + if (uart_circ_empty(xmit)) + altera_uart_stop_tx(port); } static irqreturn_t altera_uart_interrupt(int irq, void *data) |