UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Ilpo Järvinen 2022-08-16 14:57:34 +03:00 committed by Greg Kroah-Hartman
parent 292e2e7a63
commit c87391b5dd
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/tty/serial/dz.c
View File

@ -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);
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;