linux-kernel - Re: [PATCH kernel 1/4] pci/doe: Define protocol types and make those public

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Date: Thu, 1 Feb 2024 07:50:40 +0100
From: Lukas Wunner <lukas@...ner.de>
To: Alexey Kardashevskiy <aik@....com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>
Subject: Re: [PATCH kernel 1/4] pci/doe: Define protocol types and make those
 public

On Thu, Feb 01, 2024 at 05:02:25PM +1100, Alexey Kardashevskiy wrote:
> Already public pci_doe() takes a protocol type argument.
> PCIe 6.0 defines three, define them in a header for use with pci_doe().
[...]
> --- a/include/linux/pci-doe.h
> +++ b/include/linux/pci-doe.h
> @@ -13,6 +13,10 @@
>  #ifndef LINUX_PCI_DOE_H
>  #define LINUX_PCI_DOE_H
>  
> +#define PCI_DOE_PROTOCOL_DISCOVERY		0
> +#define PCI_DOE_PROTOCOL_CMA_SPDM		1
> +#define PCI_DOE_PROTOCOL_SECURED_CMA_SPDM	2

These are deliberately defined in the .c files which actually need them,
i.e. DISCOVERY is defined in drivers/pci/doe.c and CMA_SPDM is defined in
drivers/pci/cma.c:

https://lore.kernel.org/all/7721bfa3b4f8a99a111f7808ad8890c3c13df56d.1695921657.git.lukas@wunner.de/

I don't see why they would have to be public if they're each only needed
in a single .c file.

Thanks,

Lukas