linux-kernel - Re: [RFC 06/10] i2c: fwnode: add fwnode_find_i2c_adapter_by

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Message-ID: <YhPTUxvaqd+1/23a@smile.fi.intel.com>
Date:   Mon, 21 Feb 2022 20:00:51 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Clément Léger <clement.leger@...tlin.com>
Cc:     Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>, Peter Rosin <peda@...ntia.se>,
        Russell King <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-i2c@...r.kernel.org,
        netdev@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: Re: [RFC 06/10] i2c: fwnode: add fwnode_find_i2c_adapter_by_node()

On Mon, Feb 21, 2022 at 05:26:48PM +0100, Clément Léger wrote:
> Add fwnode_find_i2c_adapter_by_node() which allows to retrieve a i2c
> adapter using a fwnode. Since dev_fwnode() uses the fwnode provided by
> the of_node member of the device, this will also work for devices were
> the of_node has been set and not the fwnode field.

...

> +static int fwnode_dev_or_parent_node_match(struct device *dev, const void *data)
> +{

> +	if (dev_fwnode(dev) == data)
> +		return 1;

This can use corresponding match function from bus.h.

> +	if (dev->parent)
> +		return dev_fwnode(dev->parent) == data;
> +
> +	return 0;

The same.

> +}

-- 
With Best Regards,
Andy Shevchenko