669 	struct fat_boot_sector *b;  in fat_set_state()  local
693 	b = (struct fat_boot_sector *) bh->b_data;  in fat_set_state()
697 			b->fat32.state |= FAT_STATE_DIRTY;  in fat_set_state()
699 			b->fat32.state &= ~FAT_STATE_DIRTY;  in fat_set_state()
702 			b->fat16.state |= FAT_STATE_DIRTY;  in fat_set_state()
704 			b->fat16.state &= ~FAT_STATE_DIRTY;  in fat_set_state()
1434 static bool fat_bpb_is_zero(struct fat_boot_sector *b)  in fat_bpb_is_zero()  argument
1436 	if (get_unaligned_le16(&b->sector_size))  in fat_bpb_is_zero()
1438 	if (b->sec_per_clus)  in fat_bpb_is_zero()
1440 	if (b->reserved)  in fat_bpb_is_zero()
1442 	if (b->fats)  in fat_bpb_is_zero()
1444 	if (get_unaligned_le16(&b->dir_entries))  in fat_bpb_is_zero()
1446 	if (get_unaligned_le16(&b->sectors))  in fat_bpb_is_zero()
1448 	if (b->media)  in fat_bpb_is_zero()
1450 	if (b->fat_length)  in fat_bpb_is_zero()
1452 	if (b->secs_track)  in fat_bpb_is_zero()
1454 	if (b->heads)  in fat_bpb_is_zero()
1459 static int fat_read_bpb(struct super_block *sb, struct fat_boot_sector *b,  in fat_read_bpb()  argument
1466 	bpb->fat_sector_size = get_unaligned_le16(&b->sector_size);  in fat_read_bpb()
1467 	bpb->fat_sec_per_clus = b->sec_per_clus;  in fat_read_bpb()
1468 	bpb->fat_reserved = le16_to_cpu(b->reserved);  in fat_read_bpb()
1469 	bpb->fat_fats = b->fats;  in fat_read_bpb()
1470 	bpb->fat_dir_entries = get_unaligned_le16(&b->dir_entries);  in fat_read_bpb()
1471 	bpb->fat_sectors = get_unaligned_le16(&b->sectors);  in fat_read_bpb()
1472 	bpb->fat_fat_length = le16_to_cpu(b->fat_length);  in fat_read_bpb()
1473 	bpb->fat_total_sect = le32_to_cpu(b->total_sect);  in fat_read_bpb()
1475 	bpb->fat16_state = b->fat16.state;  in fat_read_bpb()
1476 	bpb->fat16_vol_id = get_unaligned_le32(b->fat16.vol_id);  in fat_read_bpb()
1478 	bpb->fat32_length = le32_to_cpu(b->fat32.length);  in fat_read_bpb()
1479 	bpb->fat32_root_cluster = le32_to_cpu(b->fat32.root_cluster);  in fat_read_bpb()
1480 	bpb->fat32_info_sector = le16_to_cpu(b->fat32.info_sector);  in fat_read_bpb()
1481 	bpb->fat32_state = b->fat32.state;  in fat_read_bpb()
1482 	bpb->fat32_vol_id = get_unaligned_le32(b->fat32.vol_id);  in fat_read_bpb()
1502 	if (!fat_valid_media(b->media)) {  in fat_read_bpb()
1505 				(unsigned)b->media);  in fat_read_bpb()
1532 	struct fat_boot_sector *b, int silent,  in fat_read_static_bpb()  argument
1545 	if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) {  in fat_read_static_bpb()
1556 	if (!fat_bpb_is_zero(b)) {  in fat_read_static_bpb()