670 	struct fat_boot_sector *b;  in fat_set_state()  local
694 	b = (struct fat_boot_sector *) bh->b_data;  in fat_set_state()
698 			b->fat32.state |= FAT_STATE_DIRTY;  in fat_set_state()
700 			b->fat32.state &= ~FAT_STATE_DIRTY;  in fat_set_state()
703 			b->fat16.state |= FAT_STATE_DIRTY;  in fat_set_state()
705 			b->fat16.state &= ~FAT_STATE_DIRTY;  in fat_set_state()
1431 static bool fat_bpb_is_zero(struct fat_boot_sector *b)  in fat_bpb_is_zero()  argument
1433 	if (get_unaligned_le16(&b->sector_size))  in fat_bpb_is_zero()
1435 	if (b->sec_per_clus)  in fat_bpb_is_zero()
1437 	if (b->reserved)  in fat_bpb_is_zero()
1439 	if (b->fats)  in fat_bpb_is_zero()
1441 	if (get_unaligned_le16(&b->dir_entries))  in fat_bpb_is_zero()
1443 	if (get_unaligned_le16(&b->sectors))  in fat_bpb_is_zero()
1445 	if (b->media)  in fat_bpb_is_zero()
1447 	if (b->fat_length)  in fat_bpb_is_zero()
1449 	if (b->secs_track)  in fat_bpb_is_zero()
1451 	if (b->heads)  in fat_bpb_is_zero()
1456 static int fat_read_bpb(struct super_block *sb, struct fat_boot_sector *b,  in fat_read_bpb()  argument
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()
1499 	if (!fat_valid_media(b->media)) {  in fat_read_bpb()
1502 				(unsigned)b->media);  in fat_read_bpb()
1535 	struct fat_boot_sector *b, int silent,  in fat_read_static_bpb()  argument
1548 	if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) {  in fat_read_static_bpb()
1559 	if (!fat_bpb_is_zero(b)) {  in fat_read_static_bpb()