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

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Date:   Thu, 29 Sep 2022 12:28:49 -0700
From:   Tanmay Shah <tanmays@....com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
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

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.

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
>>>>