[U-Boot] [PATCH V3 3/8] disk: introduce get_device()

[Rob Herring <robherring2@gmail.com>]

On 09/18/2012 05:37 PM, Stephen Warren wrote:
> From: Stephen Warren <swarren@nvidia.com>
> 
> This patch introduces function get_device(). This looks up a
> block_dev_desc_t from an interface name (e.g. mmc) and device number
> (e.g. 0). This function is essentially the non-partition-specific
> prefix of get_device_and_partition().
> 
> Signed-off-by: Stephen Warren <swarren@nvidia.com>
> ---
> v3: New patch.
> ---
>  disk/part.c    |   22 ++++++++++++++++++++++
>  include/part.h |    5 +++++
>  2 files changed, 27 insertions(+), 0 deletions(-)
> 
> diff --git a/disk/part.c b/disk/part.c
> index 277a243..9920d48 100644
> --- a/disk/part.c
> +++ b/disk/part.c
> @@ -435,6 +435,28 @@ void print_part (block_dev_desc_t * dev_desc)
>  
>  #endif
>  
> +int get_device(const char *ifname, const char *dev_str,
> +	       block_dev_desc_t **dev_desc)
> +{
> +	char *ep;
> +	int dev;
> +

Why don't you look up bootdevice here? That would be more consistent
behavior.

Rob

> +	dev = simple_strtoul(dev_str, &ep, 16);
> +	if (*ep) {
> +		printf("** Bad device specification %s %s **\n",
> +		       ifname, dev_str);
> +		return -1;
> +	}
> +
> +	*dev_desc = get_dev(ifname, dev);
> +	if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
> +		printf("** Bad device %s %s **\n", ifname, dev_str);
> +		return -1;
> +	}
> +
> +	return dev;
> +}
> +
>  #define MAX_SEARCH_PARTITIONS 16
>  int get_device_and_partition(const char *ifname, const char *dev_str,
>  			     block_dev_desc_t **dev_desc,
> diff --git a/include/part.h b/include/part.h
> index a6d06f3..144df4e 100644
> --- a/include/part.h
> +++ b/include/part.h
> @@ -112,6 +112,8 @@ int get_partition_info (block_dev_desc_t * dev_desc, int part, disk_partition_t
>  void print_part (block_dev_desc_t *dev_desc);
>  void  init_part (block_dev_desc_t *dev_desc);
>  void dev_print(block_dev_desc_t *dev_desc);
> +int get_device(const char *ifname, const char *dev_str,
> +	       block_dev_desc_t **dev_desc);
>  int get_device_and_partition(const char *ifname, const char *dev_str,
>  			     block_dev_desc_t **dev_desc,
>  			     disk_partition_t *info);
> @@ -131,6 +133,9 @@ static inline int get_partition_info (block_dev_desc_t * dev_desc, int part,
>  static inline void print_part (block_dev_desc_t *dev_desc) {}
>  static inline void  init_part (block_dev_desc_t *dev_desc) {}
>  static inline void dev_print(block_dev_desc_t *dev_desc) {}
> +static inline int get_device(const char *ifname, const char *dev_str,
> +	       block_dev_desc_t **dev_desc)
> +{ return -1; }
>  static inline int get_device_and_partition(const char *ifname,
>  					   const char *dev_str,
>  					   block_dev_desc_t **dev_desc,
>