1389 	int silent, struct fat_bios_param_block *bpb)  in fat_read_bpb()  argument
1394 	memset(bpb, 0, sizeof(*bpb));  in fat_read_bpb()
1395 	bpb->fat_sector_size = get_unaligned_le16(&b->sector_size);  in fat_read_bpb()
1396 	bpb->fat_sec_per_clus = b->sec_per_clus;  in fat_read_bpb()
1397 	bpb->fat_reserved = le16_to_cpu(b->reserved);  in fat_read_bpb()
1398 	bpb->fat_fats = b->fats;  in fat_read_bpb()
1399 	bpb->fat_dir_entries = get_unaligned_le16(&b->dir_entries);  in fat_read_bpb()
1400 	bpb->fat_sectors = get_unaligned_le16(&b->sectors);  in fat_read_bpb()
1401 	bpb->fat_fat_length = le16_to_cpu(b->fat_length);  in fat_read_bpb()
1402 	bpb->fat_total_sect = le32_to_cpu(b->total_sect);  in fat_read_bpb()
1404 	bpb->fat16_state = b->fat16.state;  in fat_read_bpb()
1405 	bpb->fat16_vol_id = get_unaligned_le32(b->fat16.vol_id);  in fat_read_bpb()
1407 	bpb->fat32_length = le32_to_cpu(b->fat32.length);  in fat_read_bpb()
1408 	bpb->fat32_root_cluster = le32_to_cpu(b->fat32.root_cluster);  in fat_read_bpb()
1409 	bpb->fat32_info_sector = le16_to_cpu(b->fat32.info_sector);  in fat_read_bpb()
1410 	bpb->fat32_state = b->fat32.state;  in fat_read_bpb()
1411 	bpb->fat32_vol_id = get_unaligned_le32(b->fat32.vol_id);  in fat_read_bpb()
1414 	if (!bpb->fat_reserved) {  in fat_read_bpb()
1420 	if (!bpb->fat_fats) {  in fat_read_bpb()
1438 	if (!is_power_of_2(bpb->fat_sector_size)  in fat_read_bpb()
1439 	    || (bpb->fat_sector_size < 512)  in fat_read_bpb()
1440 	    || (bpb->fat_sector_size > 4096)) {  in fat_read_bpb()
1443 			       (unsigned)bpb->fat_sector_size);  in fat_read_bpb()
1447 	if (!is_power_of_2(bpb->fat_sec_per_clus)) {  in fat_read_bpb()
1450 				(unsigned)bpb->fat_sec_per_clus);  in fat_read_bpb()
1454 	if (bpb->fat_fat_length == 0 && bpb->fat32_length == 0) {  in fat_read_bpb()
1468 	struct fat_bios_param_block *bpb)  in fat_read_static_bpb()  argument
1514 	memset(bpb, 0, sizeof(*bpb));  in fat_read_static_bpb()
1515 	bpb->fat_sector_size = SECTOR_SIZE;  in fat_read_static_bpb()
1516 	bpb->fat_sec_per_clus = fdefaults->sec_per_clus;  in fat_read_static_bpb()
1517 	bpb->fat_reserved = 1;  in fat_read_static_bpb()
1518 	bpb->fat_fats = 2;  in fat_read_static_bpb()
1519 	bpb->fat_dir_entries = fdefaults->dir_entries;  in fat_read_static_bpb()
1520 	bpb->fat_sectors = fdefaults->nr_sectors;  in fat_read_static_bpb()
1521 	bpb->fat_fat_length = fdefaults->fat_length;  in fat_read_static_bpb()
1540 	struct fat_bios_param_block bpb;  in fat_fill_super()  local
1605 		&bpb);  in fat_fill_super()
1608 			(struct fat_boot_sector *)bh->b_data, silent, &bpb);  in fat_fill_super()
1616 	logical_sector_size = bpb.fat_sector_size;  in fat_fill_super()
1617 	sbi->sec_per_clus = bpb.fat_sec_per_clus;  in fat_fill_super()
1649 	sbi->fats = bpb.fat_fats;  in fat_fill_super()
1651 	sbi->fat_start = bpb.fat_reserved;  in fat_fill_super()
1652 	sbi->fat_length = bpb.fat_fat_length;  in fat_fill_super()
1665 	if (!sbi->fat_length && bpb.fat32_length) {  in fat_fill_super()
1671 		sbi->fat_length = bpb.fat32_length;  in fat_fill_super()
1672 		sbi->root_cluster = bpb.fat32_root_cluster;  in fat_fill_super()
1675 		sbi->fsinfo_sector = bpb.fat32_info_sector;  in fat_fill_super()
1705 		sbi->vol_id = bpb.fat32_vol_id;  in fat_fill_super()
1707 		sbi->vol_id = bpb.fat16_vol_id;  in fat_fill_super()
1716 	sbi->dir_entries = bpb.fat_dir_entries;  in fat_fill_super()
1727 	total_sectors = bpb.fat_sectors;  in fat_fill_super()
1729 		total_sectors = bpb.fat_total_sect;  in fat_fill_super()
1738 		sbi->dirty = bpb.fat32_state & FAT_STATE_DIRTY;  in fat_fill_super()
1740 		sbi->dirty = bpb.fat16_state & FAT_STATE_DIRTY;  in fat_fill_super()