iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tty: serial: owl-uart, send x_char even if stopped

Browse Source 
Flow control characters should be sent even if the TX is stopped. So fix
owl-uart to behave the same as other drivers.

This unification also allows the use of the TX helper in the future.

Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220411104506.8990-3-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2022-04-11 12:45:05 +02:00 committed by Greg Kroah-Hartman
parent 83ead21929
commit d9b80d07db
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/tty/serial/owl-uart.c
View File

@ -184,9 +184,6 @@ static void owl_uart_send_chars(struct uart_port *port)
struct circ_buf *xmit = &port->state->xmit;
unsigned int ch;
if (uart_tx_stopped(port))
return;
if (port->x_char) {
while (!(owl_uart_read(port, OWL_UART_STAT) & OWL_UART_STAT_TFFU))
cpu_relax();
@ -195,6 +192,9 @@ static void owl_uart_send_chars(struct uart_port *port)
port->x_char = 0;
}
if (uart_tx_stopped(port))
return;
while (!(owl_uart_read(port, OWL_UART_STAT) & OWL_UART_STAT_TFFU)) {
if (uart_circ_empty(xmit))
break;