1457 	int silent, struct fat_bios_param_block *bpb)  in fat_read_bpb()  argument
1462 	memset(bpb, 0, sizeof(*bpb));  in fat_read_bpb()
1463 	bpb->fat_sector_size = get_unaligned_le16(&b->sector_size);  in fat_read_bpb()
1464 	bpb->fat_sec_per_clus = b->sec_per_clus;  in fat_read_bpb()
1465 	bpb->fat_reserved = le16_to_cpu(b->reserved);  in fat_read_bpb()
1466 	bpb->fat_fats = b->fats;  in fat_read_bpb()
1467 	bpb->fat_dir_entries = get_unaligned_le16(&b->dir_entries);  in fat_read_bpb()
1468 	bpb->fat_sectors = get_unaligned_le16(&b->sectors);  in fat_read_bpb()
1469 	bpb->fat_fat_length = le16_to_cpu(b->fat_length);  in fat_read_bpb()
1470 	bpb->fat_total_sect = le32_to_cpu(b->total_sect);  in fat_read_bpb()
1472 	bpb->fat16_state = b->fat16.state;  in fat_read_bpb()
1473 	bpb->fat16_vol_id = get_unaligned_le32(b->fat16.vol_id);  in fat_read_bpb()
1475 	bpb->fat32_length = le32_to_cpu(b->fat32.length);  in fat_read_bpb()
1476 	bpb->fat32_root_cluster = le32_to_cpu(b->fat32.root_cluster);  in fat_read_bpb()
1477 	bpb->fat32_info_sector = le16_to_cpu(b->fat32.info_sector);  in fat_read_bpb()
1478 	bpb->fat32_state = b->fat32.state;  in fat_read_bpb()
1479 	bpb->fat32_vol_id = get_unaligned_le32(b->fat32.vol_id);  in fat_read_bpb()
1482 	if (!bpb->fat_reserved) {  in fat_read_bpb()
1488 	if (!bpb->fat_fats) {  in fat_read_bpb()
1506 	if (!is_power_of_2(bpb->fat_sector_size)  in fat_read_bpb()
1507 	    || (bpb->fat_sector_size < 512)  in fat_read_bpb()
1508 	    || (bpb->fat_sector_size > 4096)) {  in fat_read_bpb()
1511 			       (unsigned)bpb->fat_sector_size);  in fat_read_bpb()
1515 	if (!is_power_of_2(bpb->fat_sec_per_clus)) {  in fat_read_bpb()
1518 				(unsigned)bpb->fat_sec_per_clus);  in fat_read_bpb()
1522 	if (bpb->fat_fat_length == 0 && bpb->fat32_length == 0) {  in fat_read_bpb()
1536 	struct fat_bios_param_block *bpb)  in fat_read_static_bpb()  argument
1585 	memset(bpb, 0, sizeof(*bpb));  in fat_read_static_bpb()
1586 	bpb->fat_sector_size = SECTOR_SIZE;  in fat_read_static_bpb()
1587 	bpb->fat_sec_per_clus = fdefaults->sec_per_clus;  in fat_read_static_bpb()
1588 	bpb->fat_reserved = 1;  in fat_read_static_bpb()
1589 	bpb->fat_fats = 2;  in fat_read_static_bpb()
1590 	bpb->fat_dir_entries = fdefaults->dir_entries;  in fat_read_static_bpb()
1591 	bpb->fat_sectors = fdefaults->nr_sectors;  in fat_read_static_bpb()
1592 	bpb->fat_fat_length = fdefaults->fat_length;  in fat_read_static_bpb()
1609 	struct fat_bios_param_block bpb;  in fat_fill_super()  local
1657 		&bpb);  in fat_fill_super()
1660 			(struct fat_boot_sector *)bh->b_data, silent, &bpb);  in fat_fill_super()
1668 	logical_sector_size = bpb.fat_sector_size;  in fat_fill_super()
1669 	sbi->sec_per_clus = bpb.fat_sec_per_clus;  in fat_fill_super()
1701 	sbi->fats = bpb.fat_fats;  in fat_fill_super()
1703 	sbi->fat_start = bpb.fat_reserved;  in fat_fill_super()
1704 	sbi->fat_length = bpb.fat_fat_length;  in fat_fill_super()
1717 	if (!sbi->fat_length && bpb.fat32_length) {  in fat_fill_super()
1723 		sbi->fat_length = bpb.fat32_length;  in fat_fill_super()
1724 		sbi->root_cluster = bpb.fat32_root_cluster;  in fat_fill_super()
1727 		sbi->fsinfo_sector = bpb.fat32_info_sector;  in fat_fill_super()
1757 		sbi->vol_id = bpb.fat32_vol_id;  in fat_fill_super()
1759 		sbi->vol_id = bpb.fat16_vol_id;  in fat_fill_super()
1765 	sbi->dir_entries = bpb.fat_dir_entries;  in fat_fill_super()
1776 	total_sectors = bpb.fat_sectors;  in fat_fill_super()
1778 		total_sectors = bpb.fat_total_sect;  in fat_fill_super()
1787 		sbi->dirty = bpb.fat32_state & FAT_STATE_DIRTY;  in fat_fill_super()
1789 		sbi->dirty = bpb.fat16_state & FAT_STATE_DIRTY;  in fat_fill_super()