Re: [PATCHv3] dmaengine: cppi41: Fix oops in cppi41_runtime_resume

[Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>]

* Bin Liu <b-liu-l0cyMroinI0@public.gmane.org> [170118 10:43]:
> On Wed, Jan 18, 2017 at 08:53:09AM -0800, Tony Lindgren wrote:
> > Hi,
> > 
> > * Bin Liu <b-liu-l0cyMroinI0@public.gmane.org> [170118 06:26]:
> > > With this v3, I still get -71 error when a device is plugged to a hub to
> > > musb. It doesn't happen though if the device is already plugged to the hub
> > > before attaching the hub to musb.
> > > 
> > > [  177.579300] usb 1-1: reset high-speed USB device number 2 using musb-hdrc
> > > [  177.719308] usb 1-1: device descriptor read/64, error -71
> > > [  178.350297] usb 1-1.1: new high-speed USB device number 4 using musb-hdrc
> > 
> > I think the -71 issue is a different regression. I've verified that v4.8.y
> > does not have this, but v4.9.y does have it.
> 
> I will take a look on this one.

Found the commit causing, see the mail I just sent. It's 467d5c980709.

> > Care to try the updated patch below? It won't help with the -71 issue
> > but the $subject issue should be fixed. And you should not see the
> > WARN() trigger with your tests presumably.
> 
> Yes, now no WARN() and no -115 any more. Thanks.

OK. I'll take a look at what additional quirk handling the devctl
session bit needs for the -71 error and then with these we should
have things working again.

Regards,

Tony
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