On Freitag, 12. Mai 2023 12:55:46 CEST Stephan Gerhold wrote:
> On Fri, May 12, 2023 at 11:07:10AM +0200, Francesco Dolcini wrote:
> > Hello all,
> > I recently did have a regression on v6.4rc1, and it seems that the same
> > exact issue is now happening also on v6.1.28.
> >
> > I was not able yet to bisect it (yet), but what is happening is that
> > libusbgx[1] that we use to configure a USB NCM gadget interface[2][3] just
> > hang completely at boot.
> >
> > This is happening with multiple ARM32 and ARM64 i.MX SOC (i.MX6, i.MX7,
> > i.MX8MM).
> >
> > The logs is something like that
> >
> > ```
> > [* �F] A start job is running for Load def…t schema g1.schema (6s / no
> > limit) M[K[** �F] A start job is running for Load def…t schema
> > g1.schema (7s / no limit) M[K[*** �F] A start job is running for Load
> > def…t schema g1.schema (8s / no limit) M[K[ *** �F] A start job is
> > running for Load def…t schema g1.schema (8s / no limit) ```
> >
> > I will try to bisect this and provide more useful feedback ASAP, I
> > decided to not wait for it and just send this email in case someone has
> > some insight on what is going on.
>
> I noticed a similar problem on the Qualcomm MSM8916 SoC (chipidea USB
> driver) and reverting commit 0db213ea8eed ("usb: gadget: udc: core:
> Invoke usb_gadget_connect only when started") fixes it for me. The
> follow-up commit a3afbf5cc887 ("usb: gadget: udc: core: Prevent
> redundant calls to pullup") must be reverted first to avoid conflicts.
> These two were also backported into 6.1.28.
Hi,
to confirm I'm seeing the same issue on Qualcomm MSM8974 and MSM8226 boards.
Reverting the patches Stephan mentioned makes it work again on v6.4-rc1.
Regards
Luca
>
> I didn't have time to investigate it further yet. With these patches it
> just hangs forever when setting up the USB gadget.
>
> Stephan
