linux-kernel - Re: v3.11-rc1 USB regressions

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Message-ID: <20130716080836.GC8880@arwen.pp.htv.fi>
Date:	Tue, 16 Jul 2013 11:08:36 +0300
From:	Felipe Balbi <balbi@...com>
To:	Kishon Vijay Abraham I <kishon@...com>
CC:	Daniel Mack <zonque@...il.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: v3.11-rc1 USB regressions

Hi,

On Tue, Jul 16, 2013 at 12:30:00PM +0530, Kishon Vijay Abraham I wrote:
> On Tuesday 16 July 2013 12:03 PM, Daniel Mack wrote:
> > Hi Aaro,
> > 
> > On 16.07.2013 00:56, Aaro Koskinen wrote:
> >> Hi,
> >>
> >> I think USB tree introduced regressions in v3.11-rc1, at least for some
> >> OMAP devices using legacy boot.
> > 
> > Thanks for checking the tree so early.
> > 
> >> I have only bisected these; I have no
> >> idea what the real fixes are but the following reverts make Nokia OMAP2+
> >> boards again usable for kernel development work (they need working USB
> >> connection for interacting with the device):
> >>
> >> 1) USB peripheral mode (g_ether) is broken on Nokia N900, N950 and N9
> >>    (USB_MUSB_OMAP2PLUS). To make it it work, I need to revert three
> >>    commits:
> >>
> >> 	09fc7d22b024692b2fe8a943b246de1af307132b
> >> 	usb: musb: fix incorrect usage of resource pointer
> >> 	(Reverting this fixes the g_ether probe failure "couldn't find
> >> 	 an available UDC")
> 
> I've posted a patch fixing the issue
> http://comments.gmane.org/gmane.linux.usb.general/89541
> There were some comments on it. I'll be posting a new version for it.

hmm, n8x0 used tusb6010, so perhaps a similar patch needs to be cooked
for that too. Right now, let's to the minimum fix, which is just to
increment the array size to 3 and for v3.12 we do the changes that I
suggested.

-- 
balbi

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