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disk: introduce get_device()

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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>
This commit is contained in:
Stephen Warren
2012-09-21 09:50:56 +00:00
committed by Tom Rini
parent 650f36641c
commit 2023e60861
2 changed files with 27 additions and 0 deletions
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22
disk/part.c
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@ -443,6 +443,28 @@ int get_partition_info(block_dev_desc_t *dev_desc, int part
return -1;
}
int get_device(const char *ifname, const char *dev_str,
block_dev_desc_t **dev_desc)
{
char *ep;
int dev;
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;
}
int get_device_and_partition(const char *ifname, const char *dev_str,
block_dev_desc_t **dev_desc,
disk_partition_t *info)