[Nouveau] [PATCH v2 2/2] drm/nouveau: Fix error return code in nouveau_backlight_init()

[Pierre Moreau]

Reviewed-by: Pierre Moreau <pierre.morrow at free.fr>

On 2021-05-11 — 16:28, Zhen Lei wrote:
> Fix to return a negative error code from the error handling case instead
> of 0, as done elsewhere in this function.
> 
> Fixes: db1a0ae21461 ("drm/nouveau/bl: Assign different names to interfaces")
> Suggested-by: Pierre Moreau <pierre.morrow at free.fr>
> Signed-off-by: Zhen Lei <thunder.leizhen at huawei.com>
> ---
>  drivers/gpu/drm/nouveau/nouveau_backlight.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> index d1c998e645fb4b6..f0856adbe775624 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> @@ -47,20 +47,20 @@ struct nouveau_backlight {
>  	int id;
>  };
>  
> -static bool
> +static int
>  nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE],
>  			   struct nouveau_backlight *bl)
>  {
>  	int nb = ida_simple_get(&bl_ida, 0, 100, GFP_KERNEL);
>  
>  	if (nb < 0)
> -		return false;
> +		return nb;
>  	if (nb > 0)
>  		snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight%d", nb);
>  	else
>  		snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight");
>  	bl->id = nb;
> -	return true;
> +	return 0;
>  }
>  
>  static int
> @@ -273,7 +273,8 @@ nouveau_backlight_init(struct drm_connector *connector)
>  	if (!bl)
>  		return -ENOMEM;
>  
> -	if (!nouveau_get_backlight_name(backlight_name, bl)) {
> +	ret = nouveau_get_backlight_name(backlight_name, bl);
> +	if (ret) {
>  		NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
>  		goto fail_alloc;
>  	}
> -- 
> 2.26.0.106.g9fadedd
> 
> 
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