diff options
| author | Dong Aisheng <aisheng.dong@nxp.com> | 2017-09-05 16:31:50 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:30:30 +0800 |
| commit | b6a775fe05106075eff668edcd8c356a3a630593 (patch) | |
| tree | f5871ee2f2b9fee308f94c4a9afedf4a675e7efc /drivers/tty | |
| parent | ae5bed4ae61577ab66535a58f09df02aa77af987 (diff) | |
MLK-17491-2 serial: fsl_lpuart: improve the baud setting algorithm
If "baud_diff == 0", it means we already found the exact matching baud
rate and no need try looping the left possible baud rates anymore.
So in this patch, we break out immediately once we find the right baud
rate to avoid the left meaningless loops.
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 8d7c809cf3a9..352b4f767c31 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1819,6 +1819,9 @@ lpuart32_serial_setbrg(struct lpuart_port *sport, unsigned int baudrate) baud_diff = tmp_diff; osr = tmp_osr; sbr = tmp_sbr; + + if (!baud_diff) + break; } } |