Re: [PATCH v5 2/3] usb: Introduce Xen pvUSB frontend (xen hcd)

[Greg Kroah-Hartman]

On Fri, Oct 01, 2021 at 05:00:38PM +0200, Juergen Gross wrote:
> --- /dev/null
> +++ b/drivers/usb/host/xen-hcd.c
> @@ -0,0 +1,1641 @@
> +/*
> + * xen-hcd.c

Need a SPDX line here, instead of the license boiler-plate text you
have.

Did you run checkpatch on this thing?  I thought that would have told
you about this.

> + *
> + * Xen USB Virtual Host Controller driver
> + *
> + * Copyright (C) 2009, FUJITSU LABORATORIES LTD.
> + * Author: Noboru Iwamatsu <n_iwamatsu@xxxxxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, see <http://www.gnu.org/licenses/>.
> + *
> + * Or, by your choice:
> + *
> + * When distributed separately from the Linux kernel or incorporated into
> + * other software packages, subject to the following license:
> + *
> + * 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.

Dual licensing a USB host controller driver is, um, a very dubious
thing given that you can only interact with symbols exported with
EXPORT_SYMBOL_GPL() from the USB stack.

So you might want to change this...

If not, and you want to keep the dual license, I need some explaination
from a legal person at your company included in the changelog text, and
a signed-off-by from them as well.

thanks,

greg k-h