[U-Boot] [RFC PATCH 03/14] dfu: prepare the support of multiple interface

[Lukasz Majewski <lukma@denx.de>]

Hi Patrick,

> Split the function dfu_config_entities with 2 new functions
> - dfu_alt_init
> - dfu_alt_add

Ok.

> 
> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
> ---
> 
>  drivers/dfu/dfu.c | 51
> +++++++++++++++++++++++++++++++++++++++------------ include/dfu.h
> |  2 ++ 2 files changed, 41 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
> index eb3a3c6..79a652e 100644
> --- a/drivers/dfu/dfu.c
> +++ b/drivers/dfu/dfu.c
> @@ -438,13 +438,12 @@ void dfu_free_entities(void)
>  	alt_num_cnt = 0;
>  }
>  
> -int dfu_config_entities(char *env, char *interface, char *devstr)
> +int dfu_alt_init(int num, struct dfu_entity **dfu)
>  {
> -	struct dfu_entity *dfu;
> -	int i, ret;
>  	char *s;
> +	int ret;
>  
> -	dfu_alt_num = dfu_find_alt_num(env);
> +	dfu_alt_num = num;
>  	debug("%s: dfu_alt_num=%d\n", __func__, dfu_alt_num);
>  
>  	dfu_hash_algo = NULL;
> @@ -455,21 +454,49 @@ int dfu_config_entities(char *env, char
> *interface, char *devstr) pr_err("Hash algorithm %s not supported\n",
> s); }
>  
> -	dfu = calloc(sizeof(*dfu), dfu_alt_num);
> -	if (!dfu)
> +	*dfu = calloc(sizeof(struct dfu_entity), dfu_alt_num);
> +	if (!*dfu)
> +		return -1;

I'm aware that the dfu.c file in some places uses -1 or -<errno> as
return value.

I would prefer that with new code we shall add -<errno>. In this
particular case it would be -ENOMEM 

> +
> +	return 0;
> +}
> +
> +int dfu_alt_add(struct dfu_entity *dfu, char *interface, char
> *devstr, char *s) +{
> +	struct dfu_entity *p_dfu;
> +	int ret;
> +
> +	if (alt_num_cnt >= dfu_alt_num)
> +		return -1;
> +
> +	p_dfu = &dfu[alt_num_cnt];
> +	ret = dfu_fill_entity(p_dfu, s, alt_num_cnt, interface,
> devstr);
> +	if (ret)
>  		return -1;
> -	for (i = 0; i < dfu_alt_num; i++) {
>  
> +	list_add_tail(&p_dfu->list, &dfu_list);
> +	alt_num_cnt++;
> +
> +	return 0;
> +}
> +
> +int dfu_config_entities(char *env, char *interface, char *devstr)
> +{
> +	struct dfu_entity *dfu;
> +	int i, ret;
> +	char *s;
> +
> +	ret = dfu_alt_init(dfu_find_alt_num(env), &dfu);
> +	if (ret)
> +		return -1;
> +
> +	for (i = 0; i < dfu_alt_num; i++) {
>  		s = strsep(&env, ";");
> -		ret = dfu_fill_entity(&dfu[i], s, alt_num_cnt,
> interface,
> -				      devstr);
> +		ret = dfu_alt_add(dfu, interface, devstr, s);
>  		if (ret) {
>  			/* We will free "dfu" in dfu_free_entities()
> */ return -1;
>  		}
> -
> -		list_add_tail(&dfu[i].list, &dfu_list);
> -		alt_num_cnt++;
>  	}
>  
>  	return 0;
> diff --git a/include/dfu.h b/include/dfu.h
> index bf51ab7..7d60ffc 100644
> --- a/include/dfu.h
> +++ b/include/dfu.h
> @@ -143,6 +143,8 @@ struct dfu_entity {
>  #ifdef CONFIG_SET_DFU_ALT_INFO
>  void set_dfu_alt_info(char *interface, char *devstr);
>  #endif
> +int dfu_alt_init(int num, struct dfu_entity **dfu);
> +int dfu_alt_add(struct dfu_entity *dfu, char *interface, char
> *devstr, char *s); int dfu_config_entities(char *s, char *interface,
> char *devstr); void dfu_free_entities(void);
>  void dfu_show_entities(void);




Best regards,

Lukasz Majewski

--

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