diff options
| author |   Pali Rohár <pali@kernel.org> | 2022-09-24 12:43:24 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-25 09:29:44 +0200 |
| commit | 379a33786d489ab81885ff0b3935cfeb36137fea (patch) | |
| tree | a467460031dec77ef50df026f0ed157876d7c160 /drivers/tty/serial/8250 | |
| parent | serial: Deassert Transmit Enable on probe in driver-specific way (diff) | |
| download | wireguard-linux-379a33786d489ab81885ff0b3935cfeb36137fea.tar.xz wireguard-linux-379a33786d489ab81885ff0b3935cfeb36137fea.zip | |
serial: 8250: Fix restoring termios speed after suspend
Since commit edc6afc54968 ("tty: switch to ktermios and new framework")
termios speed is no longer stored only in c_cflag member but also in new
additional c_ispeed and c_ospeed members. If BOTHER flag is set in c_cflag
then termios speed is stored only in these new members.
Since commit 027b57170bf8 ("serial: core: Fix initializing and restoring
termios speed") termios speed is available also in struct console.
So properly restore also c_ispeed and c_ospeed members after suspend to fix
restoring termios speed which is not represented by Bnnn constant.
Fixes: 4516d50aabed ("serial: 8250: Use canary to restart console after suspend")
Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20220924104324.4035-1-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index dfdd2db95cb3..fe8662cd9402 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -3321,8 +3321,13 @@ static void serial8250_console_restore(struct uart_8250_port *up) unsigned int baud, quot, frac = 0; termios.c_cflag = port->cons->cflag; - if (port->state->port.tty && termios.c_cflag == 0) + termios.c_ispeed = port->cons->ispeed; + termios.c_ospeed = port->cons->ospeed; + if (port->state->port.tty && termios.c_cflag == 0) { termios.c_cflag = port->state->port.tty->termios.c_cflag; + termios.c_ispeed = port->state->port.tty->termios.c_ispeed; + termios.c_ospeed = port->state->port.tty->termios.c_ospeed; + } baud = serial8250_get_baud_rate(port, &termios, NULL); quot = serial8250_get_divisor(port, baud, &frac); |