linux-kernel - Re: [PATCH][next] ASoC: rk817: remove redundant assignment to pointer node

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Date:   Wed, 2 Jun 2021 14:24:16 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Chris Morgan <macromorgan@...mail.com>,
        Lee Jones <lee.jones@...aro.org>, alsa-devel@...a-project.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] ASoC: rk817: remove redundant assignment to
 pointer node

On Wed, Jun 02, 2021 at 11:27:46AM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The pointer node is being initialized with a value that is never read and
> it is being updated later with a new value.  The initialization is
> redundant and can be removed.
> 
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  sound/soc/codecs/rk817_codec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/codecs/rk817_codec.c b/sound/soc/codecs/rk817_codec.c
> index 17e672b85ee5..0d7cc26ded57 100644
> --- a/sound/soc/codecs/rk817_codec.c
> +++ b/sound/soc/codecs/rk817_codec.c
> @@ -457,7 +457,7 @@ static const struct snd_soc_component_driver soc_codec_dev_rk817 = {
>  static void rk817_codec_parse_dt_property(struct device *dev,
>  					 struct rk817_codec_priv *rk817)
>  {
> -	struct device_node *node = dev->parent->of_node;
> +	struct device_node *node;
>  
>  	node = of_get_child_by_name(dev->parent->of_node, "codec");
>  	if (!node) {

This function needs an of_node_put().

regards,
dan carpenter