Merge tag 'exfat-for-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat into master

Pull exfat fixes from Namjae Jeon:

- fix overflow issue at sector calculation

- fix wrong hint_stat initialization

- fix wrong size update of stream entry

- fix endianness of upname in name_hash computation

* tag 'exfat-for-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: fix name_hash computation on big endian systems
exfat: fix wrong size update of stream entry by typo
exfat: fix wrong hint_stat initialization in exfat_find_dir_entry()
exfat: fix overflow issue in exfat_cluster_to_sector()

fs/exfat/dir.c

···
 			ret = exfat_get_next_cluster(sb, &clu.dir);
 		}
 
-		if (ret || clu.dir != EXFAT_EOF_CLUSTER) {
+		if (ret || clu.dir == EXFAT_EOF_CLUSTER) {
 			/* just initialized hint_stat */
 			hint_stat->clu = p_dir->dir;
 			hint_stat->eidx = 0;

fs/exfat/exfat_fs.h

···
 static inline sector_t exfat_cluster_to_sector(struct exfat_sb_info *sbi,
 		unsigned int clus)
 {
-	return ((clus - EXFAT_RESERVED_CLUSTERS) << sbi->sect_per_clus_bits) +
+	return ((sector_t)(clus - EXFAT_RESERVED_CLUSTERS) << sbi->sect_per_clus_bits) +
 		sbi->data_start_sector;
 }
 

fs/exfat/file.c

···
 			ep2->dentry.stream.size = 0;
 		} else {
 			ep2->dentry.stream.valid_size = cpu_to_le64(new_size);
-			ep2->dentry.stream.size = ep->dentry.stream.valid_size;
+			ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
 		}
 
 		if (new_size == 0) {

fs/exfat/nls.c

···
 		struct exfat_uni_name *p_uniname, int *p_lossy)
 {
 	int i, unilen, lossy = NLS_NAME_NO_LOSSY;
-	unsigned short upname[MAX_NAME_LENGTH + 1];
+	__le16 upname[MAX_NAME_LENGTH + 1];
 	unsigned short *uniname = p_uniname->name;
 
 	WARN_ON(!len);
···
 		    exfat_wstrchr(bad_uni_chars, *uniname))
 			lossy |= NLS_NAME_LOSSY;
 
-		upname[i] = exfat_toupper(sb, *uniname);
+		upname[i] = cpu_to_le16(exfat_toupper(sb, *uniname));
 		uniname++;
 	}
 
···
 		struct exfat_uni_name *p_uniname, int *p_lossy)
 {
 	int i = 0, unilen = 0, lossy = NLS_NAME_NO_LOSSY;
-	unsigned short upname[MAX_NAME_LENGTH + 1];
+	__le16 upname[MAX_NAME_LENGTH + 1];
 	unsigned short *uniname = p_uniname->name;
 	struct nls_table *nls = EXFAT_SB(sb)->nls_io;
 
···
 		    exfat_wstrchr(bad_uni_chars, *uniname))
 			lossy |= NLS_NAME_LOSSY;
 
-		upname[unilen] = exfat_toupper(sb, *uniname);
+		upname[unilen] = cpu_to_le16(exfat_toupper(sb, *uniname));
 		uniname++;
 		unilen++;
 	}