Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Mitch Williams <mitch.a.williams@intel.com>,
        Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 131/219] i40e: only register client on
 iWarp-capable devices
Thread-Topic: [PATCH AUTOSEL for 4.9 131/219] i40e: only register client on
 iWarp-capable devices
Thread-Index: AQHTsz8Nkxq46vLsbUS07ZsmeRa17w==
Date:   Sat, 3 Mar 2018 22:29:12 +0000
Message-ID: <20180303222716.26640-131-alexander.levin@microsoft.com>
References: <20180303222716.26640-1-alexander.levin@microsoft.com>
In-Reply-To: <20180303222716.26640-1-alexander.levin@microsoft.com>
Accept-Language: en-US
Content-Language: en-US
received-spf: None (protection.outlook.com: microsoft.com does not designate
 permitted sender hosts)
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: f9b370d5-cc9b-497c-0ef2-08d58156f94a
X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:29:12.2132
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB0924
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

From: Mitch Williams <mitch.a.williams@intel.com>

[ Upstream commit 004eb614c4d2fcc12a98714fd887a860582f203a ]

The client interface is only intended for use on devices that support
iWarp. Only register with the client if this is the case.

This fixes a panic when loading i40iw on X710 devices.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Reported-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethe=
rnet/intel/i40e/i40e_main.c
index becffd15c092..57c7456a5751 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -11142,10 +11142,12 @@ static int i40e_probe(struct pci_dev *pdev, const=
 struct pci_device_id *ent)
 		  round_jiffies(jiffies + pf->service_timer_period));
=20
 	/* add this PF to client device list and launch a client service task */
-	err =3D i40e_lan_add_device(pf);
-	if (err)
-		dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n"=
,
-			 err);
+	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
+		err =3D i40e_lan_add_device(pf);
+		if (err)
+			dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n=
",
+				 err);
+	}
=20
 #ifdef I40E_FCOE
 	/* create FCoE interface */
@@ -11323,10 +11325,11 @@ static void i40e_remove(struct pci_dev *pdev)
 		i40e_vsi_release(pf->vsi[pf->lan_vsi]);
=20
 	/* remove attached clients */
-	ret_code =3D i40e_lan_del_device(pf);
-	if (ret_code) {
-		dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
-			 ret_code);
+	if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
+		ret_code =3D i40e_lan_del_device(pf);
+		if (ret_code)
+			dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
+				 ret_code);
 	}
=20
 	/* shutdown and destroy the HMC */
--=20
2.14.1