It addresses the timeout parameter in the tiglusb driver.

1.  timeout could be 0, causing a divide-by-zero.
The patch prevents this.

2.  The timeout value to usb_bulk_msg() could be rounded
down to cause a divide-by-zero if timeout was < 10, e.g. 9,
in:
	result = usb_bulk_msg (s->dev, pipe, buffer, bytes_to_read,
			       &bytes_read, HZ / (timeout / 10));
9 / 10 == 0 => divide-by-zero !!

3.  The timeout value above doesn't do very well on converting
timeout to tenths of seconds.  Even for the default timeout
value of 15 (1.5 seconds), it becomes:
	HZ / (15 / 10) == HZ / 1 == HZ, or 1 second.
The patch corrects this formula to use:
	(HZ * 10) / timeout