linux-kernel - Re: [PATCH v3 04/12] gpiolib: Clear the gpio_device's fwnode initialized flag before adding

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Message-ID: <Y+ImCyHS7ZIr8bNd@smile.fi.intel.com>
Date:   Tue, 7 Feb 2023 12:20:59 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
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        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
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Subject: Re: [PATCH v3 04/12] gpiolib: Clear the gpio_device's fwnode
 initialized flag before adding

On Mon, Feb 06, 2023 at 05:41:56PM -0800, Saravana Kannan wrote:
> Registering an irqdomain sets the flag for the fwnode. But having the
> flag set when a device is added is interpreted by fw_devlink to mean the
> device has already been initialized and will never probe. This prevents
> fw_devlink from creating device links with the gpio_device as a
> supplier. So, clear the flag before adding the device.

...

> +	if (gdev->dev.fwnode && !gdev->dev.fwnode->dev)
> +		fwnode_dev_initialized(gdev->dev.fwnode, false);

Please, do not dereference fwnode from struct device. We have dev_fwnode()
for that.

-- 
With Best Regards,
Andy Shevchenko