fat: Use get/put_unaligned_* helpers

index 53f3cf6..8476993 100644
@@ -1215,8 +1215,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,
 		brelse(bh);
 		goto out_invalid;
 	}
-	logical_sector_size =
-		le16_to_cpu(get_unaligned((__le16 *)&b->sector_size));
+	logical_sector_size = get_unaligned_le16(&b->sector_size);
 	if (!is_power_of_2(logical_sector_size)
 	    || (logical_sector_size < 512)
 	    || (PAGE_CACHE_SIZE < logical_sector_size)) {

@@ -1314,8 +1313,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,
 	sbi->dir_per_block_bits = ffs(sbi->dir_per_block) - 1;
 
 	sbi->dir_start = sbi->fat_start + sbi->fats * sbi->fat_length;
-	sbi->dir_entries =
-		le16_to_cpu(get_unaligned((__le16 *)&b->dir_entries));
+	sbi->dir_entries = get_unaligned_le16(&b->dir_entries);
 	if (sbi->dir_entries & (sbi->dir_per_block - 1)) {
 		if (!silent)
 			printk(KERN_ERR "FAT: bogus directroy-entries per block"

@@ -1327,7 +1325,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent,
 	rootdir_sectors = sbi->dir_entries
 		* sizeof(struct msdos_dir_entry) / sb->s_blocksize;
 	sbi->data_start = sbi->dir_start + rootdir_sectors;
-	total_sectors = le16_to_cpu(get_unaligned((__le16 *)&b->sectors));
+	total_sectors = get_unaligned_le16(&b->sectors);
 	if (total_sectors == 0)
 		total_sectors = le32_to_cpu(b->total_sect);