linux-kernel - Re: [PATCH] Driver core: add bus_find_device_by_of

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Date:   Fri, 21 Sep 2018 09:14:57 +0530
From:   Silesh C V <svellattu@...sta.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Driver core: add bus_find_device_by_of_node

Hello Rafael,

On Thu, Sep 20, 2018 at 1:06 PM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> On Thu, Sep 20, 2018 at 7:43 AM Silesh C V <svellattu@...sta.com> wrote:
> >
> > Similar to bus_find_device_by_name, but finds the device having a
> > specific of_node.
>
> First, what do you need it for?  Please describe your use case in the changelog.

This will be useful for drivers that do not register a platform_driver
(but retrieve the "simple-bus" device_node using
of_find_compatible_node etc.) but are still interested in the struct
device.

>
> Second, what about a more generic bus_find_device_by_fwnode() ?

If you think that the above requirement warrants the inclusion of
bus_find_device_by_of_node, I can try implementing this in v2.

Thanks.

Regards,
Silesh