diff options
Diffstat (limited to 'drivers/tty/serial/fsl_lpuart.c')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index b822e54f2d13..f460ac06ffa5 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -2159,10 +2159,15 @@ lpuart32_serial_setbrg(struct lpuart_port *sport, unsigned int baudrate) sbr = 0; for (tmp_osr = 4; tmp_osr <= 32; tmp_osr++) { - /* calculate the temporary sbr value */ + /* + * calculate the temporary sbr value, sbr must be in 1..8191, + * limit to 8190, as the loop checks for sbr and sbr + 1 + */ tmp_sbr = (clk / (baudrate * tmp_osr)); if (tmp_sbr == 0) tmp_sbr = 1; + if (tmp_sbr > 8190) + tmp_sbr = 8190; /* * calculate the baud rate difference based on the temporary |