linux-kernel - Re: [PATCH v2 6/8] ABI: sysfs-bus-pci: add documentation for modalias

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Date:   Tue, 14 Sep 2021 13:58:23 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Amey Narkhede <ameynarkhede03@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Carlos Bilbao <bilbao@...edu>,
        Leon Romanovsky <leon@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/8] ABI: sysfs-bus-pci: add documentation for modalias

On Tue, Sep 14, 2021 at 04:55:19PM +0200, Mauro Carvalho Chehab wrote:
> Even being available since 2005, there's no documentation for
> modalias.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>

> ---
>  Documentation/ABI/testing/sysfs-bus-pci | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
> index 191cbe9ae5ed..1da4c8db3a9e 100644
> --- a/Documentation/ABI/testing/sysfs-bus-pci
> +++ b/Documentation/ABI/testing/sysfs-bus-pci
> @@ -187,6 +187,23 @@ Description:
>  		The symbolic link points to the PCI device sysfs entry of the
>  		Physical Function this device associates with.
>  
> +What:		/sys/bus/pci/devices/.../modalias
> +Date:		May 2005
> +Contact:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> +Description:
> +		This attribute indicates the PCI ID of the device object.
> +
> +		That is in the format:
> +		pci:vXXXXXXXXdXXXXXXXXsvXXXXXXXXsdXXXXXXXXbcXXscXXiXX,
> +		where:
> +		    - vXXXXXXXX contains the vendor ID;
> +		    - dXXXXXXXX contains the device ID;
> +		    - svXXXXXXXX contains the sub-vendor ID;
> +		    - sdXXXXXXXX contains the subsystem device ID;
> +		    - bcXX contains the device class;
> +		    - scXX contains the device subclass;
> +		    - iXX contains the device class programming interface.
> +
>  What:		/sys/bus/pci/slots/.../module
>  Date:		June 2009
>  Contact:	linux-pci@...r.kernel.org
> -- 
> 2.31.1
>