bug: usb: gadget: FSL_UDC_CORE Corrupted request list leads to unrecoverable loop.

[Leo Li]

> -----Original Message-----
> From: Joakim Tjernlund <Joakim.Tjernlund at infinera.com>
> Sent: Wednesday, December 1, 2021 8:19 AM
> To: regressions at leemhuis.info; Leo Li <leoyang.li at nxp.com>;
> Eugene_Bordenkircher at selinc.com; linux-usb at vger.kernel.org; linuxppc-
> dev at lists.ozlabs.org
> Cc: gregkh at linuxfoundation.org; balbi at kernel.org
> Subject: Re: bug: usb: gadget: FSL_UDC_CORE Corrupted request list leads to
> unrecoverable loop.
> 
> On Tue, 2021-11-30 at 12:56 +0100, Joakim Tjernlund wrote:
> > On Mon, 2021-11-29 at 23:48 +0000, Eugene Bordenkircher wrote:
> > > Agreed,
> > >
> > > We are happy pick up the torch on this, but I'd like to try and hear from
> Joakim first before we do.  The patch set is his, so I'd like to give him the
> opportunity.  I think he's the only one that can add a truly proper description
> as well because he mentioned that this includes a "few more fixes" than just
> the one we ran into.  I'd rather hear from him than try to reverse engineer
> what was being addressed.
> > >
> > > Joakim, if you are still watching the thread, would you like to take a stab
> at it?  If I don't hear from you in a couple days, we'll pick up the torch and do
> what we can.
> > >
> >
> > I am far away from this now and still on 4.19. I don't mind if you tweak
> tweak the patches for better "upstreamability"
> 
> Even better would be to migrate to the chipidea driver, I am told just a few
> tweaks are needed but this is probably something NXP should do as they
> have access to other SOC's using chipidea.

I agree with this direction but the problem was with bandwidth.  As this controller was only used on legacy platforms, it is harder to justify new effort on it now.

Regards,
Leo