diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_fintek.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_fintek.c b/drivers/tty/serial/8250/8250_fintek.c index ae7d86e44b76..79a4958b3f5c 100644 --- a/drivers/tty/serial/8250/8250_fintek.c +++ b/drivers/tty/serial/8250/8250_fintek.c @@ -315,6 +315,13 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios, F81866_UART_CLK_14_769MHZ, F81866_UART_CLK_18_432MHZ, F81866_UART_CLK_24MHZ }; + /* + * We'll use serial8250_do_set_termios() for baud = 0, otherwise It'll + * crash on baudrate_table[i] % baud with "division by zero". + */ + if (!baud) + goto exit; + switch (pdata->pid) { case CHIP_ID_F81216H: reg = RS485; @@ -327,8 +334,7 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios, dev_warn(port->dev, "%s: pid: %x Not support. use default set_termios.\n", __func__, pdata->pid); - serial8250_do_set_termios(port, termios, old); - return; + goto exit; } for (i = 0; i < ARRAY_SIZE(baudrate_table); ++i) { @@ -356,6 +362,7 @@ void fintek_8250_set_termios(struct uart_port *port, struct ktermios *termios, tty_termios_encode_baud_rate(termios, baud, baud); } +exit: serial8250_do_set_termios(port, termios, old); } |