target/tcm_fc: return detailed error in ft_sess_create()

Not every failure is due to out-of-memory; the ACLs might not be
set, too. So return a detailed error code in ft_sess_create()
instead of just a NULL pointer.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/target/tcm_fc/tfc_sess.c b/drivers/target/tcm_fc/tfc_sess.c
index 6ffbb60..cc8c261 100644 (file)
--- a/drivers/target/tcm_fc/tfc_sess.c
+++ b/drivers/target/tcm_fc/tfc_sess.c
@@ -223,7 +223,7 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id,
 
        sess = kzalloc(sizeof(*sess), GFP_KERNEL);
        if (!sess)
-               return NULL;
+               return ERR_PTR(-ENOMEM);
 
        kref_init(&sess->kref); /* ref for table entry */
        sess->tport = tport;
@@ -234,8 +234,9 @@ static struct ft_sess *ft_sess_create(struct ft_tport *tport, u32 port_id,
                                             TARGET_PROT_NORMAL, &initiatorname[0],
                                             sess, ft_sess_alloc_cb);
        if (IS_ERR(sess->se_sess)) {
+               int rc = PTR_ERR(sess->se_sess);
                kfree(sess);
-               return NULL;
+               sess = ERR_PTR(rc);
        }
        return sess;
 }