On Thursday 14 February 2008, David Newall wrote: > RS232 is (normally) so much slower than USB that, on an extended > transmission, the buffer internal to the local hardware can fill well > before the remote device has demanded that transmission stop. In fact, > now that you've mentioned it, I can't see that anything to stop the > driver from overflowing the internal buffer, which is very perplexing. > Would that be right?
Only for stupidly designed hardware ... which you might well be using, though I happen to never have seen anything that's quite *that* stupid. (There's always a first time though.) USB has enough control flow to prevent that from happening. If the host sends data that the peripheral isn't ready to accept, the peripheral just refuses to accept it, and the host will retry later. - Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
