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特别是 mtd 这部分,确实长见识啊!

snprintf(gd->disk_name, sizeof(gd->disk_name),
"%s%c", tr->name, (tr->part_bits?"a":"0") + new->devnum);
snprintf(gd->devfs_name, sizeof(gd->devfs_name),
"%s/%c", tr->name, (tr->part_bits?"a":"0") + new->devnum);