Re: [PATCH] usb: typec: anx7411: Call of_node_get() before of_find_xxx API

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On Thu, Sep 15, 2022 at 10:54:00AM +0800, Liang He wrote:
> In anx7411_typec_switch_probe(), we should call of_node_get() before
> of_find_node_by_name() which will automatically decrease the 'from'
> argument.

Just use of_get_child_by_name() instead of of_find_node_by_name(). If
you don't need recursion, then there is no point in using
of_find_node_by_name().

thanks,

> Fixes: fe6d8a9c8e64 ("usb: typec: anx7411: Add Analogix PD ANX7411 support")
> Signed-off-by: Liang He <windhl@xxxxxxx>
> ---
>  drivers/usb/typec/anx7411.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/typec/anx7411.c b/drivers/usb/typec/anx7411.c
> index c0f0842d443c..fe000bbf7183 100644
> --- a/drivers/usb/typec/anx7411.c
> +++ b/drivers/usb/typec/anx7411.c
> @@ -1105,6 +1105,7 @@ static int anx7411_typec_switch_probe(struct anx7411_data *ctx,
>  	int ret;
>  	struct device_node *node;
>  
> +	of_node_get(dev->of_node);
>  	node = of_find_node_by_name(dev->of_node, "orientation_switch");
>  	if (!node)
>  		return 0;
> @@ -1115,6 +1116,7 @@ static int anx7411_typec_switch_probe(struct anx7411_data *ctx,
>  		return ret;
>  	}
>  
> +	of_node_get(dev->of_node);
>  	node = of_find_node_by_name(dev->of_node, "mode_switch");
>  	if (!node) {
>  		dev_err(dev, "no typec mux exist");
> -- 
> 2.25.1

-- 
heikki



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