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serial: rk29: fix infinite loop on rk29_serial_set_termios

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黄涛 2011-01-26 19:57:37 +08:00
parent 18d7f246ae
commit 2cbc72d654
1 changed files with 5 additions and 2 deletions
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7
drivers/serial/rk29_serial.c
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@ -400,8 +400,11 @@ static void rk29_serial_set_termios(struct uart_port *port, struct ktermios *ter
printk("UART_GET_MCR fcr=0x%x\n",fcr);
}
mode = mode | LCR_DLA_EN;
while(rk29_uart_read(port,UART_USR)&UART_USR_BUSY)
cpu_relax();
{
int timeout = 10000000;
while ((rk29_uart_read(port,UART_USR)&UART_USR_BUSY) && timeout--)
cpu_relax();
}
rk29_uart_write(port,mode,UART_LCR);
baud = rk29_set_baud_rate(port, baud);
uart_update_timeout(port, termios->c_cflag, baud);