linux-kernel - Re: [PATCH v1 1/4] usb: typec: stusb160x: Remove use of fw_devlink_purge_absent

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Message-ID: <ZAW0gaDWrQKsSzC1@kuha.fi.intel.com>
Date:   Mon, 6 Mar 2023 11:38:09 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Yongqin Liu <yongqin.liu@...aro.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Martin Kepplinger <martin.kepplinger@...i.sm>,
        Amelie Delaunay <amelie.delaunay@...s.st.com>,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v1 1/4] usb: typec: stusb160x: Remove use of
 fw_devlink_purge_absent_suppliers()

On Wed, Mar 01, 2023 at 01:49:48PM -0800, Saravana Kannan wrote:
> This reverts commit 6b63376722d9 (usb: typec: stusb160x: Don't block
> probing of consumer of "connector" nodes, 2021-07-16).
> 
> After recent changes to fw_devlink that ended with commit 4a032827daa8
> ("of: property: Simplify of_link_to_phandle()"), fw_devlink no longer
> cares about the "compatible" property and figures out the correct struct
> device at runtime. So, we no longer need to call
> fw_devlink_purge_absent_suppliers().
> 
> Signed-off-by: Saravana Kannan <saravanak@...gle.com>
> Cc: Amelie Delaunay <amelie.delaunay@...s.st.com>

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/stusb160x.c | 9 ---------
>  1 file changed, 9 deletions(-)
> 
> diff --git a/drivers/usb/typec/stusb160x.c b/drivers/usb/typec/stusb160x.c
> index 494b371151e0..482bffeb8a8f 100644
> --- a/drivers/usb/typec/stusb160x.c
> +++ b/drivers/usb/typec/stusb160x.c
> @@ -685,15 +685,6 @@ static int stusb160x_probe(struct i2c_client *client)
>  	if (!fwnode)
>  		return -ENODEV;
>  
> -	/*
> -	 * This fwnode has a "compatible" property, but is never populated as a
> -	 * struct device. Instead we simply parse it to read the properties.
> -	 * This it breaks fw_devlink=on. To maintain backward compatibility
> -	 * with existing DT files, we work around this by deleting any
> -	 * fwnode_links to/from this fwnode.
> -	 */
> -	fw_devlink_purge_absent_suppliers(fwnode);
> -
>  	/*
>  	 * When both VDD and VSYS power supplies are present, the low power
>  	 * supply VSYS is selected when VSYS voltage is above 3.1 V.
> -- 
> 2.39.2.722.g9855ee24e9-goog

-- 
heikki