linux-kernel - Re: [RFC PATCH 02/11] pci: endpoint: introduce configfs entry for configuring EP functions

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Date:   Wed, 12 Oct 2016 05:42:10 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>, Arnd Bergmann <arnd@...db.de>,
        Jingoo Han <jingoohan1@...il.com>, hch@...radead.org,
        Joao.Pinto@...opsys.com, mingkai.hu@....com, m-karicheri2@...com,
        Pratyush Anand <pratyush.anand@...il.com>,
        linux-pci@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Joao Pinto <jpinto@...opsys.com>,
        Rob Herring <robh+dt@...nel.org>, nsekhar@...com
Subject: Re: [RFC PATCH 02/11] pci: endpoint: introduce configfs entry for
 configuring EP functions

On Wed, Sep 14, 2016 at 10:41:58AM +0530, Kishon Vijay Abraham I wrote:
> diff --git a/drivers/pci/endpoint/Kconfig b/drivers/pci/endpoint/Kconfig
> index a6d827c..f1dd206 100644
> --- a/drivers/pci/endpoint/Kconfig
> +++ b/drivers/pci/endpoint/Kconfig
> @@ -13,7 +13,9 @@ config PCI_ENDPOINT
>  
>  	   Enabling this option will build the endpoint library, which
>  	   includes endpoint controller library and endpoint function
> -	   library.
> +	   library. This will also enable the configfs entry required to
> +	   configure the endpoint function and used to bind the
> +	   function with a endpoint controller.
>  
>  	   If in doubt, say "N" to disable Endpoint support.

This needs to grow a

	depends on CONFIGFS_FS

> +/**
> + * pci-ep-cfs.c - configfs to configure the PCI endpoint

Please don't use the file name in the top of the file comment, it's
only bound to get out of date..

> +struct pci_epf_info {
> +	struct config_item pci_epf;
> +	struct pci_epf *epf;
> +};

Any reason not to simply embedd the config_item into the pci_epf structure?