[SCSI] iscsi: add iscsi host helpers

This finishes the host/session unbinding, by adding some helpers
to add and remove hosts and the session they manage.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 7 insertions, 11 deletions

diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 8cdcaf33fb4e..e19d92f2d753 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -1866,7 +1866,7 @@ iscsi_tcp_session_create(struct Scsi_Host *shost, uint16_t cmds_max,
                 return NULL;
         }
 
-        shost = scsi_host_alloc(&iscsi_sht, sizeof(struct iscsi_host));
+        shost = iscsi_host_alloc(&iscsi_sht, 0, qdepth);
         if (!shost)
                 return NULL;
         shost->transportt = iscsi_tcp_scsi_transport;
@@ -1874,10 +1874,9 @@ iscsi_tcp_session_create(struct Scsi_Host *shost, uint16_t cmds_max,
         shost->max_id = 0;
         shost->max_channel = 0;
         shost->max_cmd_len = 16;
+        shost->can_queue = cmds_max;
 
-        iscsi_host_setup(shost, qdepth);
-
-        if (scsi_add_host(shost, NULL))
+        if (iscsi_host_add(shost, NULL))
                 goto free_host;
         *hostno = shost->host_no;
 
@@ -1912,10 +1911,9 @@ iscsi_tcp_session_create(struct Scsi_Host *shost, uint16_t cmds_max,
 remove_session:
         iscsi_session_teardown(cls_session);
 remove_host:
-        scsi_remove_host(shost);
+        iscsi_host_remove(shost);
 free_host:
-        iscsi_host_teardown(shost);
-        scsi_host_put(shost);
+        iscsi_host_free(shost);
         return NULL;
 }
 
@@ -1924,11 +1922,9 @@ static void iscsi_tcp_session_destroy(struct iscsi_cls_session *cls_session)
         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 
         iscsi_r2tpool_free(cls_session->dd_data);
-        iscsi_session_teardown(cls_session);
 
-        scsi_remove_host(shost);
-        iscsi_host_teardown(shost);
-        scsi_host_put(shost);
+        iscsi_host_remove(shost);
+        iscsi_host_free(shost);
 }
 
 static int iscsi_tcp_slave_configure(struct scsi_device *sdev)