linux-kernel - Re: USB broken on Banana Pi in Linux 4.6

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Date:	Tue, 7 Jun 2016 10:30:17 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Marc Haber <mh+linux-kernel@...schlus.de>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: Re: USB broken on Banana Pi in Linux 4.6

On Tue, Jun 07, 2016 at 07:06:00PM +0200, Marc Haber wrote:
> On Fri, Jun 03, 2016 at 08:35:11AM -0700, Greg KH wrote:
> > On Fri, Jun 03, 2016 at 08:53:58AM +0200, Marc Haber wrote:
> > > On Mon, May 30, 2016 at 01:47:12PM -0700, Greg KH wrote:
> > > > On Mon, May 30, 2016 at 09:02:54PM +0200, Marc Haber wrote:
> > > > > Hi,
> > > > > 
> > > > > on my Bananapis, in kernel 4.6 USB does not work. Kernel configuration
> > > > > is USB-wise identical to 4.5 (grepped for differences in (hci|usb)),
> > > > > and in 4.6 there is not even /dev/bus/usb.
> > > > > 
> > > > > In kernel 4.6, the message "ohci-platform: OHCI generic platform
> > > > > driver" is the last one, and "ehci-platform 1c14000.usb: EHCI Host
> > > > > Controller" is the first one that is missing.
> > > > > 
> > > > > Is this already a known issue? Or, does a 4.6 kernel need to be
> > > > > configured differently if you want USB?
> > > > 
> > > > Are you sure you configured in the correct host controller that you
> > > > want?  Have you done a diff of your .config files to see what you
> > > > changed?  How did you create your 4.6 config?
> > > 
> > > I used make oldconfig, and I diffed the configs for (hci|usb), and
> > > there is no difference.
> > 
> > There might be other things than HCI|USB that are the issue here...
> 
> Full config diff attached. Hints are appreciated.

Nothing obvious, can you use 'git bisect' to go from 4.5.0 to 4.6.0 to
find the offending commit?

thanks,

greg k-h