Distribution:
  Linux-2.6.20

Problem Description:
  get_serial_info function is used to return serial device information to user.
Cycladess serial board's get_serial_info( ) implementation seems to forget to 
assign the `closing_wait' value (parameter for `time to wait before closing')

3487  static int
3488  get_serial_info(struct cyclades_port *info,
3489		struct serial_struct __user * retinfo)
3490  {
...
3496 	memset(&tmp, 0, sizeof(tmp));
3497	tmp.type = info->type;
3498	tmp.line = info->line;
3499	tmp.port = info->card * 0x100 + info->line - cinfo->first_line;
3500	tmp.irq = cinfo->irq;
3501	tmp.flags = info->flags;
3502	tmp.close_delay = info->close_delay;
3503	tmp.baud_base = info->baud;
3504	tmp.custom_divisor = info->custom_divisor;
3505	tmp.hub6 = 0;		/*!!! */
3506	return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
3507  }

all parameters, except for closing_wait, is returned.
Actually, closing_wait is very likely to be non-zero. Therefore, in most 
cases, what user gets about this type of device's 'time-to-wait-before-
closing' parameter would be wrong.

I have compared this code with set_serial_info in the same file and many other 
serial device's get_serial_info (e.g. moxa_get_serial_info(..) in 
driver/char/moxa.c, get_serial_info in drivers/usb/serial/io_edgeport.c, 
etc.). It seems that the closing_wait is very likely to be forgotten.

Steps to reproduce:
got by source code analysis, no test case yet.