linux-kernel - Re: [PATCH v9 6/6] drivers: remoteproc: Add Xilinx r5 remoteproc driver

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Message-ID: <CANLsYkzG6REdGepd8pxH7bLWVLSEW_RJDaSmLqAMnGKPR_We4w@mail.gmail.com>
Date:   Thu, 29 Sep 2022 17:20:56 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Tanmay Shah <tanmays@....com>
Cc:     andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, michal.simek@...inx.com,
        ben.levinsky@...inx.com, tanmay.shah@...inx.com,
        michal.simek@....com, linux-remoteproc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v9 6/6] drivers: remoteproc: Add Xilinx r5 remoteproc driver

On Thu, 29 Sept 2022 at 13:28, Tanmay Shah <tanmays@....com> wrote:
>
> Thanks Mathieu.
>
> Also, I see that last few revisions I have changed driver a lot based on
> comments, but documentation in driver is not in sync.
>
> I know we agreed initially, that I will address changes _only_ commented
> in previous revision. However, in next revision I would like
>
> to fix documentation all over the driver along with your comments. I
> hope it's fine and I wanted to give you heads up so we stay on same page.

I'm fine with that.  Thanks for the heads up.

>
> Thanks,
>
> Tanmay
>
> On 9/29/22 10:22 AM, Mathieu Poirier wrote:
> > On Mon, Sep 26, 2022 at 03:02:22PM -0700, Tanmay Shah wrote:
> >> On 9/1/22 1:25 PM, Mathieu Poirier wrote:
> >>> On Thu, Jul 07, 2022 at 06:39:55PM -0700, Tanmay Shah wrote:
> >> [ ... ]
> >>>> --- /dev/null
> >>>> +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c
> >>>> @@ -0,0 +1,1055 @@
> >>>> +// SPDX-License-Identifier: GPL-2.0
> >> Hi Mathieu,
> >>
> >> I tried to fix SPDX-License-Identifier to GPL (same as MODULE_LICENSE
> >> below), However checkpatch.pl reports this as following warning:
> >>
> >> "WARNING: 'SPDX-License-Identifier: GPL' is not supported in LICENSES/..."
> >>
> >> I see that GPL-1.0 is under LICENSE/deprecated directory.
> >>
> >>>> +/*
> >>>> + * ZynqMP R5 Remote Processor driver
> >>>> + *
> >>>> + */
> >>>> +
> >>>> +#include <dt-bindings/power/xlnx-zynqmp-power.h>
> >> [ ... ]
> >>
> >>>> +MODULE_DEVICE_TABLE(of, zynqmp_r5_remoteproc_match);
> >>>> +
> >>>> +static struct platform_driver zynqmp_r5_remoteproc_driver = {
> >>>> +  .probe = zynqmp_r5_remoteproc_probe,
> >>>> +  .driver = {
> >>>> +          .name = "zynqmp_r5_remoteproc",
> >>>> +          .of_match_table = zynqmp_r5_remoteproc_match,
> >>>> +  },
> >>>> +};
> >>>> +module_platform_driver(zynqmp_r5_remoteproc_driver);
> >>>> +
> >>>> +MODULE_DESCRIPTION("Xilinx R5F remote processor driver");
> >>>> +MODULE_AUTHOR("Xilinx Inc.");
> >>>> +MODULE_LICENSE("GPL");
> >>> There is a discrepency between the GPL-2.0 in the SPDS identifier and the above.
> >> Also, changing to MODULE_LICENSE("GPL v2") gives following warning:
> >>
> >> WARNING: Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db ("module: Cure
> >> the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
> >> #1115: FILE: drivers/remoteproc/xlnx_r5_remoteproc.c:1034:
> >> +MODULE_LICENSE("GPL v2");
> >>
> >> So, It looks like SPDX-License-Identifier should be GPL-2.0-only and
> >> MODULE_LICENSE should be change to "GPL".
> > Commit bf7fbeeae6db is an interesting read - thanks for pointing it out.
> >
> >> It this ok? Any other suggestions ?
> > What you have looks good, in that regard there is no need to change anything
> > from your patch.
> >
> >> Thanks,
> >>
> >> Tanmay
> >>
> >>> More comments tomorrow or Tuesday.
> >>>
> >>> Thanks,
> >>> Mathieu
> >>>
> >>>> --
> >>>> 2.25.1
> >>>>