linux-kernel - Re: [PATCH v6 1/3] usb: Add Xen pvUSB protocol description

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Date:   Fri, 15 Oct 2021 10:14:07 +0200
From:   Greg KH <greg@...ah.com>
To:     Juergen Gross <jgross@...e.com>
Cc:     linux-usb@...r.kernel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v6 1/3] usb: Add Xen pvUSB protocol description

On Fri, Oct 15, 2021 at 10:07:35AM +0200, Juergen Gross wrote:
> On 13.10.21 14:01, Greg KH wrote:
> > On Wed, Oct 13, 2021 at 09:52:05AM +0200, Juergen Gross wrote:
> > > Add the definition of pvUSB protocol used between the pvUSB frontend in
> > > a Xen domU and the pvUSB backend in a Xen driver domain (usually Dom0).
> > > 
> > > This header was originally provided by Fujitsu for Xen based on Linux
> > > 2.6.18.
> > > 
> > > Changes are:
> > > - adapt to Linux kernel style guide
> > > - use Xen namespace
> > > - add lots of comments
> > > - don't use kernel internal defines
> > > 
> > > Signed-off-by: Juergen Gross <jgross@...e.com>
> > > Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> > > ---
> > >   include/xen/interface/io/usbif.h | 421 +++++++++++++++++++++++++++++++
> > >   1 file changed, 421 insertions(+)
> > >   create mode 100644 include/xen/interface/io/usbif.h
> > > 
> > > diff --git a/include/xen/interface/io/usbif.h b/include/xen/interface/io/usbif.h
> > > new file mode 100644
> > > index 000000000000..9494b1c9be99
> > > --- /dev/null
> > > +++ b/include/xen/interface/io/usbif.h
> > > @@ -0,0 +1,421 @@
> > > +/*
> > > + * usbif.h
> > > + *
> > > + * USB I/O interface for Xen guest OSes.
> > > + *
> > > + * Copyright (C) 2009, FUJITSU LABORATORIES LTD.
> > > + * Author: Noboru Iwamatsu <n_iwamatsu@...fujitsu.com>
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a copy
> > > + * of this software and associated documentation files (the "Software"), to
> > > + * deal in the Software without restriction, including without limitation the
> > > + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
> > > + * sell copies of the Software, and to permit persons to whom the Software is
> > > + * furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> > > + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> > > + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> > > + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> > > + * DEALINGS IN THE SOFTWARE.
> > > + */
> > 
> > Please use a SPDX line and not license "boilerplate" text like this :(
> 
> Okay. Is this your only concern for this series? Or is it a blocking
> point for you before looking into it in more detail?

It was an easy thing to see at first glance that you hadn't taken my
previous comment about this seriously :(

> IOW: does it make sense for me to wait for further comments before
> sending a new version of the series?

Sure, you can fix this up and resend, it will take a while to review the
host controller code...

thanks,

greg k-h