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

[Leo Li <leoyang.li@nxp.com>]

> -----Original Message-----
> From: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
> Sent: Thursday, December 2, 2021 4:45 PM
> To: regressions@leemhuis.info; Leo Li <leoyang.li@nxp.com>;
> Eugene_Bordenkircher@selinc.com; linux-usb@vger.kernel.org; linuxppc-
> dev@lists.ozlabs.org
> Cc: gregkh@linuxfoundation.org; balbi@kernel.org
> Subject: Re: bug: usb: gadget: FSL_UDC_CORE Corrupted request list leads to
> unrecoverable loop.
> 
> On Thu, 2021-12-02 at 20:35 +0000, Leo Li wrote:
> >
> > > -----Original Message-----
> > > From: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
> > > Sent: Wednesday, December 1, 2021 8:19 AM
> > > To: regressions@leemhuis.info; Leo Li <leoyang.li@nxp.com>;
> > > Eugene_Bordenkircher@selinc.com; linux-usb@vger.kernel.org;
> > > linuxppc- dev@lists.ozlabs.org
> > > Cc: gregkh@linuxfoundation.org; balbi@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.
> >
> 
> Legacy? All PPC is legacy and not supported now?

I'm not saying that they are not supported, but they are in maintenance only mode.

Regards,
Leo