linux-kernel - RE: [PATCH v2 3/3] usb: dwc3: gadget: return error if command sent to DEPCMD register fails

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Message-ID: <F1B223389110CE49B4CF055ABA2E5D3D7824EE9A@XAP-PVEXMBX02.xlnx.xilinx.com>
Date:	Wed, 8 Jul 2015 09:50:47 +0000
From:	Subbaraya Sundeep Bhatta <subbaraya.sundeep.bhatta@...inx.com>
To:	"balbi@...com" <balbi@...com>
CC:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: RE: [PATCH v2 3/3] usb: dwc3: gadget: return error if command sent
 to DEPCMD register fails

Hi Felipe,

> -----Original Message-----
> From: Subbaraya Sundeep Bhatta
> Sent: Tuesday, July 07, 2015 10:32 AM
> To: 'balbi@...com'
> Cc: gregkh@...uxfoundation.org; linux-usb@...r.kernel.org; linux-
> kernel@...r.kernel.org; stable@...r.kernel.org
> Subject: RE: [PATCH v2 3/3] usb: dwc3: gadget: return error if command
> sent to DEPCMD register fails
>
> Hi Felipe,
>
> > -----Original Message-----
> > From: Felipe Balbi [mailto:balbi@...com]
> > Sent: Monday, July 06, 2015 10:38 PM
> > To: Subbaraya Sundeep Bhatta
> > Cc: balbi@...com; gregkh@...uxfoundation.org;
> > linux-usb@...r.kernel.org; linux-kernel@...r.kernel.org;
> > stable@...r.kernel.org
> > Subject: Re: [PATCH v2 3/3] usb: dwc3: gadget: return error if command
> > sent to DEPCMD register fails
> >
> > On Wed, Jul 01, 2015 at 07:29:28AM +0000, Subbaraya Sundeep Bhatta
> > wrote:
> > > Hi Felipe,
> > >
> > > > -----Original Message-----
> > > > From: Felipe Balbi [mailto:balbi@...com]
> > > > Sent: Tuesday, June 30, 2015 3:17 AM
> > > > To: Subbaraya Sundeep Bhatta
> > > > Cc: balbi@...com; gregkh@...uxfoundation.org;
> > > > linux-usb@...r.kernel.org; linux-kernel@...r.kernel.org;
> > > > stable@...r.kernel.org; Subbaraya Sundeep Bhatta
> > > > Subject: Re: [PATCH v2 3/3] usb: dwc3: gadget: return error if
> > > > command sent to DEPCMD register fails
> > > >
> > > > Hi,
> > > >
> > > > On Thu, May 21, 2015 at 03:46:48PM +0530, Subbaraya Sundeep
> > Bhatta
> > > > wrote:
> > > > > We need to return error to caller if command is not sent to
> > > > > controller succesfully.
> > > > >
> > > > > Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@...inx.com>
> > > > > Fixes: 72246da40f37 (usb: Introduce DesignWare USB3 DRD Driver)
> > > > > Cc: <stable@...r.kernel.org>
> > > > > ---
> > > > > v2 changes:
> > > > >       Added Fixes and Cc in commit message.
> > > >
> > > > I noticed that this breaks at least my AM437x silicon with DWC3
> > > > 2.40a when used with g_zero and testusb. As of now, it could be
> > > > that silicon is mis-behaving because I got a Transfer Complete
> > > > before the failing Set Endpoint Transfer Resource command.
> > > >
> > > > In any case, can you run on your setup with g_zero and
> > > > test.sh/testusb [1]/[2] just to verify that it really works for you ?

Can you please send test.sh and testusb.c in attachment. I guess am not able to access gitorious because of its migration.

Thanks,
Sundeep

> > >
> > > Ok I will do that.
> >
> > Did you manage to run the test I asked ? If we don't get down to this,
> > I'll have to revert your patch as it regresses my platforms.
>
> Sorry I caught up with some other customer reported issue on Zynq
> (Chipidea). I will do it by this weekend at any cost. Please wait.
>
> Thanks,
> Sundeep.B.S.
>
> >
> > --
> > balbi


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