linux-kernel - Re: [PATCH] regmap: debugfs: Add back in erroneously removed initialisation of ret

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Date:   Fri, 18 Sep 2020 15:38:43 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>
Cc:     broonie@...nel.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH] regmap: debugfs: Add back in erroneously removed
 initialisation of ret

On Fri, Sep 18, 2020 at 12:20:02PM +0100, Charles Keepax wrote:
> Fixes: 94cc89eb8fa5 ("regmap: debugfs: Fix handling of name string for debugfs init delays")
> Reported-by: kernel test robot <lkp@...el.com>
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
> ---
>  drivers/base/regmap/regmap.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
> index d0f7cc574ff34..b24f14ea96d8a 100644
> --- a/drivers/base/regmap/regmap.c
> +++ b/drivers/base/regmap/regmap.c
> @@ -706,9 +706,9 @@ struct regmap *__regmap_init(struct device *dev,
>  			     const char *lock_name)
>  {
>  	struct regmap *map;
> +	int ret = -EINVAL;
>  	enum regmap_endian reg_endian, val_endian;
>  	int i, j;
> -	int ret;
>  
>  	if (!config)
>  		goto err;

Hi Charles, this isn't enough.  There are several goto err_map; paths
were "ret" is zero.  That will result in an Oops in the caller.  It has
to be an error code.

regards,
dan carpenter