staging: exfat: Clean up return codes - FFS_NAMETOOLONG

Convert FFS_NOTNAMETOOLONG to -ENAMETOOLONG
Signed-off-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Link: https://lore.kernel.org/r/20191024155327.1095907-6-Valdis.Kletnieks@vt.eduSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/exfat/exfat.h

@@ -221,7 +221,6 @@ static inline u16 get_row_index(u16 i)
 #define FFS_MAXOPENED           13
 #define FFS_EOF                 15
 #define FFS_MEMORYERR           17
-#define FFS_NAMETOOLONG		18
 #define FFS_ERROR               19
 
 #define NUM_UPCASE              2918

drivers/staging/exfat/exfat_super.c

@@ -2368,7 +2368,7 @@ static int exfat_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 			err = -EEXIST;
 		else if (err == -ENOSPC)
 			err = -ENOSPC;
-		else if (err == FFS_NAMETOOLONG)
+		else if (err == -ENAMETOOLONG)
 			err = -ENAMETOOLONG;
 		else
 			err = -EIO;
@@ -2649,7 +2649,7 @@ static int exfat_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 			err = -EEXIST;
 		else if (err == -ENOSPC)
 			err = -ENOSPC;
-		else if (err == FFS_NAMETOOLONG)
+		else if (err == -ENAMETOOLONG)
 			err = -ENAMETOOLONG;
 		else
 			err = -EIO;