linux-kernel - Re: [PATCH] of: property: lower loglevel of of_graph_get_next

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Date: Fri, 1 Mar 2024 15:03:26 -0600
From: Rob Herring <robh@...nel.org>
To: Marco Felsch <m.felsch@...gutronix.de>
Cc: frowand.list@...il.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH] of: property: lower loglevel of
 of_graph_get_next_endpoint

On Fri, Feb 23, 2024 at 11:47:21AM +0100, Marco Felsch wrote:
> Drivers like the tcpm.c do search for a remote endpoint on different
> places to be dt-bindings compatible. The search is done on the device
> itself or on the child fwnode in case it was not found the first time.
> 
> This indicates that not finding the remote endpoint at the first try is
> a valid use-case and should not cause an error printing.
> 
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> ---
> Hi,
> 
> I'm not 100% certain if this is the correct place but if our platform
> follows the dt-bindings we receive
> 
> | OF: graph: no port node found in /soc@...us@...00000/i2c@...30000/tcpc@50
> 
> a few times because of the below pr_err() and EPROBE_DEFER.
> 
> Regards,
>   Marco
> 
>  drivers/of/property.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/of/property.c b/drivers/of/property.c
> index 641a40cf5cf3..155df04a9512 100644
> --- a/drivers/of/property.c
> +++ b/drivers/of/property.c
> @@ -665,7 +665,7 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
>  		of_node_put(node);
>  
>  		if (!port) {
> -			pr_err("graph: no port node found in %pOF\n", parent);
> +			pr_notice("graph: no port node found in %pOF\n", parent);

Already changed to pr_debug.

Rob