linux-kernel - Re: [PATCH v1 3/4] usb: typec: tcpm: Remove use of fw_devlink_purge_absent

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Date:   Mon, 6 Mar 2023 11:39:51 +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 3/4] usb: typec: tcpm: Remove use of
 fw_devlink_purge_absent_suppliers()

On Wed, Mar 01, 2023 at 01:49:50PM -0800, Saravana Kannan wrote:
> 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: Yongqin Liu <yongqin.liu@...aro.org>
> Cc: Sumit Semwal <sumit.semwal@...aro.org>

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

> ---
>  drivers/usb/typec/tcpm/tcpm.c | 9 ---------
>  1 file changed, 9 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index a0d943d78580..fd131f07020c 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -6112,15 +6112,6 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,
>  	if (!fwnode)
>  		return -EINVAL;
>  
> -	/*
> -	 * 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);
> -
>  	ret = typec_get_fw_cap(&port->typec_caps, fwnode);
>  	if (ret < 0)
>  		return ret;
> -- 
> 2.39.2.722.g9855ee24e9-goog

-- 
heikki