[SCSI] iscsi: always release crypto

Unconditionally free crypto state, as it is always allocated during
TCP connection creation.  Without this, crypto structures leak and
crc32c module refcounts grow as connections are created and
destroyed.

Signed-off-by: Pete Wyckoff <pw@osc.edu>
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 0a9dbc59663fc723ef839193292a157580227d98..c0b8b33e935caa2f5f19aed2ba52d15e19e0b736 100644 (file)
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1816,21 +1816,14 @@ iscsi_tcp_conn_destroy(struct iscsi_cls_conn *cls_conn)
 {
        struct iscsi_conn *conn = cls_conn->dd_data;
        struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
-       int digest = 0;
-
-       if (conn->hdrdgst_en || conn->datadgst_en)
-               digest = 1;
 
        iscsi_tcp_release_conn(conn);
        iscsi_conn_teardown(cls_conn);
 
-       /* now free tcp_conn */
-       if (digest) {
-               if (tcp_conn->tx_hash.tfm)
-                       crypto_free_hash(tcp_conn->tx_hash.tfm);
-               if (tcp_conn->rx_hash.tfm)
-                       crypto_free_hash(tcp_conn->rx_hash.tfm);
-       }
+       if (tcp_conn->tx_hash.tfm)
+               crypto_free_hash(tcp_conn->tx_hash.tfm);
+       if (tcp_conn->rx_hash.tfm)
+               crypto_free_hash(tcp_conn->rx_hash.tfm);
 
        kfree(tcp_conn);
 }