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received-spf: None (protection.outlook.com: synaptics.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: EPgw4PqSiMHCpwdjLAx3XxMOmauIWbhiQnAP4xLQ2GmThilGZ8Pik0V73iSg66qZZraZUEVysR5XZUvI7aVp3Tk7h7hAc9HT1TTd09qMCfhUA6RZAmaMVIpDm7gxv51XMcImH+LExZ0x9Pw39GeqmFt9B87Svdpa0Fybi5s9MWX7dJHA6JjprTlU97MAfGe/Jw7gIJy7Io2Ic2fbXxu9NFB5izrYhbAsrv6Krw7Euc3mBDI/qAcyQnY8cQIpcn9n+j23ylBKDft2oKwsdg+orX1A9vY85T1durrQe1IYUdM9MzD46E9ZX2x+ZtB76j78mRF5tp0LghdU3J9ycfC8OivmUlVdLwaYXwT1sSmfOyYzOrttZ5aV5Bl59RXEYiDvPhDfVkaBoMtRbY1q2ISAeGeD0qC2cCl98BVwTA6CDWk= Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: synaptics.com X-MS-Exchange-CrossTenant-Network-Message-Id: 553b4c4c-6d83-4d56-c6fe-08d6ac2cda2e X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2019 05:36:36.1313 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 335d1fbc-2124-4173-9863-17e7051a2a0e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR03MB4165 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, 18 Mar 2019 19:26:30 -0500 Aditya Pakki wrote: >=20 > In gen_pci_probe, of_match_node can return a NULL pointer in case of This could not happen. If the probe is called, it means OF registered a device with a valid compatible string, so of_match_node cannot be NULL. > failure. The patch avoids a NULL pointer dereference in such a scenario. >=20 > Signed-off-by: Aditya Pakki > --- > drivers/pci/controller/pci-host-generic.c | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/drivers/pci/controller/pci-host-generic.c b/drivers/pci/cont= roller/pci-host-generic.c > index dea3ec7592a2..85f473f50e96 100644 > --- a/drivers/pci/controller/pci-host-generic.c > +++ b/drivers/pci/controller/pci-host-generic.c > @@ -83,6 +83,8 @@ static int gen_pci_probe(struct platform_device *pdev) > struct pci_ecam_ops *ops; >=20 > of_id =3D of_match_node(gen_pci_of_match, pdev->dev.of_node); > + if (!of_id) > + return -ENXIO; > ops =3D (struct pci_ecam_ops *)of_id->data; >=20 > return pci_host_common_probe(pdev, ops); > -- > 2.17.1 >=20 >=20 > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > https://urldefense.proofpoint.com/v2/url?u=3Dhttp-3A__lists.infradead.org= _mailman_listinfo_linux-2Darm-2Dkernel&d=3DDwICAg&c=3D7dfBJ8cXbWjhc0BhImu8w= Q&r=3DwlaKTGoVCDxOzHc2QUzpzGEf9oY3eidXlAe3OF1omvo&m=3DAaw3ijENR3L1GJbf1JjDl= Pa-S8-6UwqqXN40ECdoisk&s=3DByG7jEMATcZVHKP-JW7j4efNcV-iAfJDFTEzC8Ba7oc&e=3D