Re: [PATCH] usb: gadget: aspeed_udc: fix handling of tx_len == 0

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On Fri, Jun 24, 2022 at 06:17:31AM +0000, Herrenschmidt, Benjamin wrote:
> 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...

No, I'm the person who introduced the bug so it's unique to this driver.

regards,
dan carpenter




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