diff options
| author | Dong Aisheng <aisheng.dong@nxp.com> | 2017-09-05 16:31:50 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | 0e694c16661bcedf7a6759d9ad82eca337331d4d (patch) | |
| tree | 02125385d0344ef873a98a1159ad2b9851456614 /drivers/tty/serial | |
| parent | 18e53f2c35662a4900add5e7cf3b354c7762def9 (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/serial')
| -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 7655b0d651db..eb6b6f0aeae5 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1661,6 +1661,9 @@ lpuart32_serial_setbrg(struct lpuart_port *sport, unsigned int baudrate) baud_diff = tmp_diff; osr = tmp_osr; sbr = tmp_sbr; + + if (!baud_diff) + break; } } |