linux-kernel - Re: [PATCH 8/8] kbuild, PCI: microchip: comment out MODULE

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Date:   Fri, 10 Feb 2023 18:27:19 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Nick Alcock <nick.alcock@...cle.com>
Cc:     mcgrof@...nel.org, linux-modules@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 8/8] kbuild, PCI: microchip: comment out MODULE_LICENSE
 in non-modules

Hey Nick,

FYI $subject seems wrong, this is a PCI patch AFAICT.

On Fri, Feb 10, 2023 at 04:47:49PM +0000, Nick Alcock wrote:
> Since commit 8b41fc4454e ("kbuild: create modules.builtin without
> Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
> are used to identify modules. As a consequence, uses of the macro
> in non-modules will cause modprobe to misidentify their containing
> object file as a module when it is not (false positives), and modprobe
> might succeed rather than failing with a suitable error message.
> 
> So comment out all uses of MODULE_LICENSE that are not in real modules

This patch should not been needed, there's an existing patch to make
this a module:
https://lore.kernel.org/linux-riscv/20230111125323.1911373-4-daire.mcnamara@microchip.com/

> (the license declaration is left in as documentation).

I don't really get this one though, why leave it there as
"documentation" when the file has an SPDX entry anyway?

> Signed-off-by: Nick Alcock <nick.alcock@...cle.com>
> Suggested-by: Luis Chamberlain <mcgrof@...nel.org>
> Cc: Luis Chamberlain <mcgrof@...nel.org>
> Cc: linux-modules@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-pci@...r.kernel.org
> Cc: linux-riscv@...ts.infradead.org

One for the future:
How about also CCing those listed in MAINTAINERS for the file you're
changing?

Cheers,
Conor.

> ---
>  drivers/pci/controller/pcie-microchip-host.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/pcie-microchip-host.c b/drivers/pci/controller/pcie-microchip-host.c
> index 0ebf7015e9af..08c0b778ce67 100644
> --- a/drivers/pci/controller/pcie-microchip-host.c
> +++ b/drivers/pci/controller/pcie-microchip-host.c
> @@ -1135,6 +1135,6 @@ static struct platform_driver mc_pcie_driver = {
>  };
>  
>  builtin_platform_driver(mc_pcie_driver);
> -MODULE_LICENSE("GPL");
> +/* MODULE_LICENSE("GPL"); */
>  MODULE_DESCRIPTION("Microchip PCIe host controller driver");
>  MODULE_AUTHOR("Daire McNamara <daire.mcnamara@...rochip.com>");
> -- 
> 2.39.1.268.g9de2f9a303
> 

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