linux-kernel - Re: [PATCH 4/5] PCI: mt7621: Add missing 'MODULE

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Message-ID: <YZJWM33dXqW1BsuV@rocinante>
Date:   Mon, 15 Nov 2021 13:44:35 +0100
From:   Krzysztof Wilczyński <kw@...ux.com>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>
Cc:     linux-pci@...r.kernel.org, linux-mips@...r.kernel.org,
        tsbogend@...ha.franken.de, john@...ozen.org,
        lorenzo.pieralisi@....com, bhelgaas@...gle.com, arnd@...db.de,
        linux-kernel@...r.kernel.org, Yanteng Si <siyanteng@...ngson.cn>
Subject: Re: [PATCH 4/5] PCI: mt7621: Add missing 'MODULE_LICENSE()'
 definition

Hi Sergio and Yanteng,

Thank you for taking care of this!

> MT7620 PCIe host controller driver can be built as a module but there is no
> 'MODULE_LICENSE()' specified in code, causing a build error due to missing
> license information.
> 
> ERROR: modpost: missing MODULE_LICENSE() in drivers/pci/controller/pcie-mt7621.o
> 
> Fix this by adding 'MODULE_LICENSE()' to the driver.
> 
> Fixes: 2bdd5238e756 ("PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver")
> Signed-off-by: Yanteng Si <siyanteng@...ngson.cn>
> Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> ---
>  drivers/pci/controller/pcie-mt7621.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c
> index 9cf541f5de9c..a120a61ede07 100644
> --- a/drivers/pci/controller/pcie-mt7621.c
> +++ b/drivers/pci/controller/pcie-mt7621.c
> @@ -561,3 +561,5 @@ static struct platform_driver mt7621_pci_driver = {
>  	},
>  };
>  builtin_platform_driver(mt7621_pci_driver);
> +
> +MODULE_LICENSE("GPL v2");

A question here about the builtin_platform_driver() use in this driver,
especially since it's set as tristate in Kconfig, thus I am not sure if
using builtin_platform_driver() over module_platform_driver() is correct?

Unless this is more because you need to reply on device_initcall() for the
driver to properly initialise?

Otherwise,

Reviewed-by: Krzysztof Wilczyński <kw@...ux.com>

	Krzysztof