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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2022-08-16 14:57:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-30 15:22:34 +0300 |
| commit | c87391b5dd77fbd4fd0b0a96fa867a169842b0a9 (patch) | |
| tree | 4abf0e70f97e97bc702fbb4ce116e2b30bbdd27c /drivers | |
| parent | 292e2e7a639dad2392e5af5281d1f48f05dde10d (diff) | |
| download | linux-c87391b5dd77fbd4fd0b0a96fa867a169842b0a9.tar.xz | |
serial: dz: Assume previous baudrate is valid
Assume previously used termios has a valid baudrate and use
it directly.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220816115739.10928-4-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/dz.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c index 2e21acf39720..3eaf4e85bfdd 100644 --- a/drivers/tty/serial/dz.c +++ b/drivers/tty/serial/dz.c @@ -592,9 +592,12 @@ static void dz_set_termios(struct uart_port *uport, struct ktermios *termios, baud = uart_get_baud_rate(uport, termios, old_termios, 50, 9600); bflag = dz_encode_baud_rate(baud); - if (bflag < 0) { /* Try to keep unchanged. */ - baud = uart_get_baud_rate(uport, old_termios, NULL, 50, 9600); - bflag = dz_encode_baud_rate(baud); + if (bflag < 0) { + if (old_termios) { + /* Keep unchanged. */ + baud = tty_termios_baud_rate(old_termios); + bflag = dz_encode_baud_rate(baud); + } if (bflag < 0) { /* Resort to 9600. */ baud = 9600; bflag = DZ_B9600; |