ubifs: Simplify the code using ubifs_crc_node

Replace part of the code using ubifs_crc_node.

Signed-off-by: Xichao Zhao <[e-mail]>
Reviewed-by: Zhihao Cheng <[e-mail]>
Signed-off-by: Richard Weinberger <[e-mail]>

fs/ubifs/io.c

···
  */
 void ubifs_pad(const struct ubifs_info *c, void *buf, int pad)
 {
-	uint32_t crc;
-
 	ubifs_assert(c, pad >= 0);
 
 	if (pad >= UBIFS_PAD_NODE_SZ) {
···
 		ch->len = cpu_to_le32(UBIFS_PAD_NODE_SZ);
 		pad -= UBIFS_PAD_NODE_SZ;
 		pad_node->pad_len = cpu_to_le32(pad);
-		crc = crc32(UBIFS_CRC32_INIT, buf + 8, UBIFS_PAD_NODE_SZ - 8);
-		ch->crc = cpu_to_le32(crc);
+		ubifs_crc_node(buf, UBIFS_PAD_NODE_SZ);
 		memset(buf + UBIFS_PAD_NODE_SZ, 0, pad);
 	} else if (pad > 0)
 		/* Too little space, padding node won't fit */
···
  */
 void ubifs_prep_grp_node(struct ubifs_info *c, void *node, int len, int last)
 {
-	uint32_t crc;
 	struct ubifs_ch *ch = node;
 	unsigned long long sqnum = next_sqnum(c);
 
···
 		ch->group_type = UBIFS_IN_NODE_GROUP;
 	ch->sqnum = cpu_to_le64(sqnum);
 	ch->padding[0] = ch->padding[1] = 0;
-	crc = crc32(UBIFS_CRC32_INIT, node + 8, len - 8);
-	ch->crc = cpu_to_le32(crc);
+	ubifs_crc_node(node, len);
 }
 
 /**

fs/ubifs/recovery.c

···
 	union ubifs_key key;
 	int err, lnum, offs, len;
 	loff_t i_size;
-	uint32_t crc;
 
 	/* Locate the inode node LEB number and offset */
 	ino_key_init(c, &key, e->inum);
···
 	ino = c->sbuf + offs;
 	ino->size = cpu_to_le64(e->d_size);
 	len = le32_to_cpu(ino->ch.len);
-	crc = crc32(UBIFS_CRC32_INIT, (void *)ino + 8, len - 8);
-	ino->ch.crc = cpu_to_le32(crc);
+	ubifs_crc_node((void *)ino, len);
 	/* Work out where data in the LEB ends and free space begins */
 	p = c->sbuf;
 	len = c->leb_size - 1;