Re: [08/15] usb: musb: Improve PM runtime and phy handling for 2430 glue layer

Tony Lindgren
2016-09-09T20:05:39Z

* Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org> [160909 12:24]:
> Hi Tony,
>
> On Friday 09 Sep 2016 21:33:35 Laurent Pinchart wrote:
> > On Friday 09 Sep 2016 10:24:47 Tony Lindgren wrote:
> > > * Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org> [160909 10:08]:
> > > > On Wednesday 11 May 2016 17:53:09 Tony Lindgren wrote:
> > > > > This simplifies things and allows idling both MUSB and PHY
> > > > > when nothing is configured. Let's just return early from PM
> > > > > runtime if musb is not yet initialized.
> > > > >
> > > > > Let's also warn if PHY is not configured.
> > > >
> > > > git bisect pointed out to this patch today when I tried to find out what
> > > > broke nfsroot over USB ethernet gadget on my Panda board :-/ Could you
> > > > help me debugging and fixing that ?
> > >
> > > OK, do you have commit 2c5575401e34 ("usb: musb: Fix locking errors for
> > > host only mode")? That's now in v4.8-rc5. Or which kernel are we talking
> > > about here?
> >
> > I've originally ran into the issue on v4.8-rc2. I've then bisected the issue
> > to this commit, and confirmed that both v4.7 and v4.8-rc5 are broken.
>
> "[PATCH v2] musb: omap2430: do not assume balanced enable()/disable()login
> register mail settings" (https://patchwork.kernel.org/patch/9261611/) fixes
> the issue.

Oh it's a different issue then. Sounds like it's probably related to
drivers/phy vs drivers/usb/phy. Will take a look on my panda.

Tony

Regards,

Tony