76 	if (le16_to_cpu(b->bpb.bytes_per_sector) <  256 ||  in ntfs_boot_sector_is_ntfs()
77 	    le16_to_cpu(b->bpb.bytes_per_sector) > 4096) {  in ntfs_boot_sector_is_ntfs()
79 			       le16_to_cpu(b->bpb.bytes_per_sector));  in ntfs_boot_sector_is_ntfs()
84 	switch (b->bpb.sectors_per_cluster) {  in ntfs_boot_sector_is_ntfs()
88 		if ((b->bpb.sectors_per_cluster < 240)  in ntfs_boot_sector_is_ntfs()
89 		    || (b->bpb.sectors_per_cluster > 253)) {  in ntfs_boot_sector_is_ntfs()
90 			if (b->bpb.sectors_per_cluster > 128)  in ntfs_boot_sector_is_ntfs()
93 					b->bpb.sectors_per_cluster);  in ntfs_boot_sector_is_ntfs()
97 					b->bpb.sectors_per_cluster);  in ntfs_boot_sector_is_ntfs()
103 	if (b->bpb.sectors_per_cluster > 128)  in ntfs_boot_sector_is_ntfs()
104 		sectors_per_cluster = 1 << (256 - b->bpb.sectors_per_cluster);  in ntfs_boot_sector_is_ntfs()
106 		sectors_per_cluster = b->bpb.sectors_per_cluster;  in ntfs_boot_sector_is_ntfs()
107 	i = (u32)le16_to_cpu(b->bpb.bytes_per_sector) * sectors_per_cluster;  in ntfs_boot_sector_is_ntfs()
114 	if (le16_to_cpu(b->bpb.reserved_sectors) ||  in ntfs_boot_sector_is_ntfs()
115 	    le16_to_cpu(b->bpb.root_entries) ||  in ntfs_boot_sector_is_ntfs()
116 	    le16_to_cpu(b->bpb.sectors) ||  in ntfs_boot_sector_is_ntfs()
117 	    le16_to_cpu(b->bpb.sectors_per_fat) ||  in ntfs_boot_sector_is_ntfs()
118 	    le32_to_cpu(b->bpb.large_sectors) ||  in ntfs_boot_sector_is_ntfs()
119 	    b->bpb.fats) {  in ntfs_boot_sector_is_ntfs()
122 			       le16_to_cpu(b->bpb.reserved_sectors),  in ntfs_boot_sector_is_ntfs()
123 			       le16_to_cpu(b->bpb.root_entries),  in ntfs_boot_sector_is_ntfs()
124 			       le16_to_cpu(b->bpb.sectors),  in ntfs_boot_sector_is_ntfs()
125 			       le16_to_cpu(b->bpb.sectors_per_fat),  in ntfs_boot_sector_is_ntfs()
126 			       le32_to_cpu(b->bpb.large_sectors),  in ntfs_boot_sector_is_ntfs()
127 			       b->bpb.fats);  in ntfs_boot_sector_is_ntfs()
202 	vol->sector_size = le16_to_cpu(bs->bpb.bytes_per_sector);  in ntfs_boot_sector_parse()
211 	if (bs->bpb.sectors_per_cluster > 128)  in ntfs_boot_sector_parse()
212 		sectors_per_cluster = 1 << (256 - bs->bpb.sectors_per_cluster);  in ntfs_boot_sector_parse()
214 		sectors_per_cluster = bs->bpb.sectors_per_cluster;  in ntfs_boot_sector_parse()