Re: Patch mceusb: fix invalid urb interval

[Sean Young <sean@mess.org>]

On Mon, Nov 03, 2014 at 02:49:45PM -0200, Mauro Carvalho Chehab wrote:
> Em Mon, 20 Jan 2014 12:36:26 -0500
> Jarod Wilson <jarod@redhat.com> escreveu:
> 
> > On Sun, Jan 19, 2014 at 09:56:48PM +0000, Sean Young wrote:
> > > On Sun, Jan 19, 2014 at 10:05:15PM +0100, Martin Kittel wrote:
> > > > Hi Mauro, hi Sean,
> > ...
> > > > >From a71676dad29adef9cafb08598e693ec308ba2e95 Mon Sep 17 00:00:00 2001
> > > > From: Martin Kittel <linux@martin-kittel.de>
> > > > Date: Sun, 19 Jan 2014 21:24:55 +0100
> > > > Subject: [PATCH] mceusb: use endpoint xfer mode as advertised
> > > > 
> > > > mceusb always sets endpoints to interrupt transfer mode no matter
> > > > what the device itself is advertising. This causes trouble on xhci
> > > > hubs. This patch changes the behavior to honor the device endpoint
> > > > settings.
> > > 
> > > This patch is wrong. I get:
> > > 
> > > [   60.962727] ------------[ cut here ]------------
> > > [   60.962729] WARNING: CPU: 0 PID: 0 at drivers/usb/core/urb.c:452 usb_submit_u
> > > rb+0x1fd/0x5b0()
> > > [   60.962730] usb 3-2: BOGUS urb xfer, pipe 1 != type 3
> > > 
> > > This is because the patch no longer sets the endpoints to interrupt
> > > endpoints, but still uses the interrupt functions like
> > > usb_fill_int_urb().
> > 
> > Crap, I sent a working patch to everyone a few days ago, but from a new
> > host that didn't have relay stuff set up yet, so I don't think anyone got
> > the message. Oops... I'll try to dig it back up. Its a quick fix, but its
> > tested as fully functional on multiple devices here, including a mix of
> > ones that claim bulk and interrupt, ones with no bInterval, ones with
> > different non-0 bIntervals, etc.
> 
> Hi All,
> 
> This is still pending on my queue. Any news?

I'm pretty sure the proper fix for this problem has been merged already:

commit 0cacb46ace1f433f0ab02af10686f6dc50b5d268
Author: Matt DeVillier <matt.devillier@gmail.com>
Date:   Thu Apr 24 11:16:31 2014 -0300

    [media] fix mceusb endpoint type identification/handling


Sean