On Thu, Jan 03, 2002 at 02:08:58PM -0700, Gordon McNutt wrote:
>
> However, I'm convinced that the toggle bit should be advanced if and
> only if the packet was ACKd. Advancing it on a NAK seems to defeat the
> whole purpose of the toggle mechanism as a means of keeping the host and
> peripheral in synch.
I think you are correct. According to the USB spec, in section 8.6 it
says:
Transmitter sequence bits toggle only when the data transmitter
receives a valid ACK handshake.
So it looks like a bug in the host controller driver. Does the same
thing happen for usb-uhci.o or usb-ohci.o?
thanks,
greg k-h
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