On Thu, 2022-06-23 at 09:43 +0300, Dan Carpenter wrote: > On Thu, Jun 23, 2022 at 01:41:49AM +0000, Neal Liu wrote: > > > The bug is that we should still enter this loop if "tx_len" is > > > zero. > > > > > > After adding the "last" variable, then the "chunk >= 0" condition > > > is no longer > > > required but I left it for readability. > > > > > > > Use either "chunk >=0" or "last". > > I think the former is more simpler. > > chunk >= 0 doesn't work. last works but I think this way is more > readable. Hrm... what is that driver ? I've missed it ... is the code lifted from aspeed-vhub ? If yes, should we instead make it a common code base ? And if there are bug fixes on one they might apply to the other as well... Neal, is that "UDC" IP block the same that resides under the vhub ? If yes then this really needs to be a common driver instead, using the code existing in aspeed-vhub, simply making it able to work without a parent vhub pointer. Cheers, Ben.