[SCSI] iscsi: fix crypto_alloc_hash() error check

The return value of crypto_alloc_hash() should be checked by
IS_ERR().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 61e3a61..8889686 100644 (file)
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1777,13 +1777,13 @@ iscsi_tcp_conn_create(struct iscsi_cls_session *cls_session, uint32_t conn_idx)
        tcp_conn->tx_hash.tfm = crypto_alloc_hash("crc32c", 0,
                                                  CRYPTO_ALG_ASYNC);
        tcp_conn->tx_hash.flags = 0;
-       if (!tcp_conn->tx_hash.tfm)
+       if (IS_ERR(tcp_conn->tx_hash.tfm))
                goto free_tcp_conn;
 
        tcp_conn->rx_hash.tfm = crypto_alloc_hash("crc32c", 0,
                                                  CRYPTO_ALG_ASYNC);
        tcp_conn->rx_hash.flags = 0;
-       if (!tcp_conn->rx_hash.tfm)
+       if (IS_ERR(tcp_conn->rx_hash.tfm))
                goto free_tx_tfm;
 
        return cls_conn;