linux-kernel - Re: [PATCH v3 3/4] bus: fsl-mc: add root dprc rescan attribute

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Date:   Fri, 23 Mar 2018 16:48:12 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Ioana Ciornei <ioana.ciornei@....com>
Cc:     laurentiu.tudor@....com, linux-kernel@...r.kernel.org,
        stuyoder@...il.com, ruxandra.radulescu@....com, arnd@...db.de,
        razvan.stefanescu@....com, Roy.Pledge@....com
Subject: Re: [PATCH v3 3/4] bus: fsl-mc: add root dprc rescan attribute

On Fri, Mar 23, 2018 at 10:38:57AM -0500, Ioana Ciornei wrote:
> Introduce the rescan attribute as a device attribute to
> synchronize the fsl-mc bus objects and the MC firmware.
> 
> To rescan the root dprc only, e.g.
> echo 1 > /sys/bus/fsl-mc/devices/dprc.1/rescan
> 
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
> ---
> Changes in v2:
>   - added proper documentation in /Documentation/ABI/
>   - updated the MAINTAINERS file
> Changes in v3:
>   - no change
> 
>  Documentation/ABI/stable/sysfs-bus-fsl-mc |  6 ++++++
>  MAINTAINERS                               |  1 +
>  drivers/bus/fsl-mc/dprc-driver.c          |  4 ++--
>  drivers/bus/fsl-mc/fsl-mc-bus.c           | 28 ++++++++++++++++++++++++++++
>  drivers/bus/fsl-mc/fsl-mc-private.h       |  3 +++
>  5 files changed, 40 insertions(+), 2 deletions(-)
>  create mode 100644 Documentation/ABI/stable/sysfs-bus-fsl-mc
> 
> diff --git a/Documentation/ABI/stable/sysfs-bus-fsl-mc b/Documentation/ABI/stable/sysfs-bus-fsl-mc
> new file mode 100644
> index 0000000..e530e8c
> --- /dev/null
> +++ b/Documentation/ABI/stable/sysfs-bus-fsl-mc
> @@ -0,0 +1,6 @@
> +What:		/sys/bus/fsl-mc/devices/dprc.*/rescan
> +Date:		March. 2018

"."?

> +KernelVersion:	4.16

4.17 :)

> +Contact:	Ioana Ciornei <ioana.ciornei@....com>
> +Description:	Root dprc rescan attribute

What does this do?  A bit more description please.

thanks,

greg k-h