Do not need to scan disk every time when we get part info by name.
Signed-off-by: Kever Yang kever.yang@rock-chips.com ---
Changes in v2: - rebase to latest version - add error handle for partition tbale not exist
disk/part.c | 35 ++++++++++++++++------------------- 1 file changed, 16 insertions(+), 19 deletions(-)
diff --git a/disk/part.c b/disk/part.c index df0d50d..b80a4b1 100644 --- a/disk/part.c +++ b/disk/part.c @@ -644,28 +644,25 @@ cleanup: int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name, disk_partition_t *info, int part_type) { - struct part_driver *first_drv = - ll_entry_start(struct part_driver, part_driver); - const int n_drvs = ll_entry_count(struct part_driver, part_driver); struct part_driver *part_drv; - - for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) { - int ret; - int i; - for (i = 1; i < part_drv->max_entries; i++) { - if (part_type >= 0 && part_type != part_drv->part_type) - break; - ret = part_drv->get_info(dev_desc, i, info); - if (ret != 0) { - /* no more entries in table */ - break; - } - if (strcmp(name, (const char *)info->name) == 0) { - /* matched */ - return i; - } + int ret; + int i; + + part_drv = part_driver_lookup_type(dev_desc); + if (!part_drv) + return -1; + for (i = 1; i < part_drv->max_entries; i++) { + ret = part_drv->get_info(dev_desc, i, info); + if (ret != 0) { + /* no more entries in table */ + break; + } + if (strcmp(name, (const char *)info->name) == 0) { + /* matched */ + return i; } } + return -1; }