ext3: Remove unnecessary casts on bh->b_data

bh->b_data is already a pointer to char so casts to 'char *' should
be meaningless. Remove them.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index daf34b1..af7aead 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -1654,7 +1654,7 @@
 	 * Note: s_es must be initialized as soon as possible because
 	 *       some ext3 macro-instructions depend on its value
 	 */
-	es = (struct ext3_super_block *) (((char *)bh->b_data) + offset);
+	es = (struct ext3_super_block *) (bh->b_data + offset);
 	sbi->s_es = es;
 	sb->s_magic = le16_to_cpu(es->s_magic);
 	if (sb->s_magic != EXT3_SUPER_MAGIC)
@@ -1765,7 +1765,7 @@
 			       "error: can't read superblock on 2nd try");
 			goto failed_mount;
 		}
-		es = (struct ext3_super_block *)(((char *)bh->b_data) + offset);
+		es = (struct ext3_super_block *)(bh->b_data + offset);
 		sbi->s_es = es;
 		if (es->s_magic != cpu_to_le16(EXT3_SUPER_MAGIC)) {
 			ext3_msg(sb, KERN_ERR,
@@ -2168,7 +2168,7 @@
 		goto out_bdev;
 	}
 
-	es = (struct ext3_super_block *) (((char *)bh->b_data) + offset);
+	es = (struct ext3_super_block *) (bh->b_data + offset);
 	if ((le16_to_cpu(es->s_magic) != EXT3_SUPER_MAGIC) ||
 	    !(le32_to_cpu(es->s_feature_incompat) &
 	      EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {