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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Dan Carpenter <dan.carpenter@oracle.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.4 074/162] scsi: bnx2i: missing error code in
 bnx2i_ep_connect()
Thread-Topic: [PATCH AUTOSEL for 4.4 074/162] scsi: bnx2i: missing error code
 in bnx2i_ep_connect()
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Date:   Mon, 9 Apr 2018 00:28:37 +0000
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From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 1d32a62c74b3bcb69822b0f4745af5410cfec3a7 ]

If bnx2i_map_ep_dbell_regs() then we accidentally return NULL instead of
an error pointer.  It results in a NULL dereference in
iscsi_if_ep_connect().

Fixes: cf4e6363859d ("[SCSI] bnx2i: Add bnx2i iSCSI driver.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/scsi/bnx2i/bnx2i_iscsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_is=
csi.c
index 72894378ffcf..94ee4bbc0505 100644
--- a/drivers/scsi/bnx2i/bnx2i_iscsi.c
+++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c
@@ -1909,7 +1909,8 @@ static struct iscsi_endpoint *bnx2i_ep_connect(struct=
 Scsi_Host *shost,
=20
 	bnx2i_ep_active_list_add(hba, bnx2i_ep);
=20
-	if (bnx2i_map_ep_dbell_regs(bnx2i_ep))
+	rc =3D bnx2i_map_ep_dbell_regs(bnx2i_ep);
+	if (rc)
 		goto del_active_ep;
=20
 	mutex_unlock(&hba->net_dev_lock);
--=20
2.15.1