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([2620:0:e00:550a:642:1aff:fee8:511b]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7e356b27b06sm596568785a.17.2025.07.22.20.41.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Jul 2025 20:41:07 -0700 (PDT) From: Chenyuan Yang To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, mingo@kernel.org, tglx@linutronix.de, chenyuan0y@gmail.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] pch_gbe: Add NULL check for ptp_pdev in pch_gbe_probe() Date: Tue, 22 Jul 2025 22:41:05 -0500 Message-Id: <20250723034105.2939635-1-chenyuan0y@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Since pci_get_domain_bus_and_slot() can return NULL for PCI_DEVFN(12, 4), add NULL check for adapter->ptp_pdev in pch_gbe_probe(). This change is similar to the fix implemented in commit 9af152dcf1a0 ("drm/gma500: Add NULL check for pci_gfx_root in mid_get_vbt_data()"). Signed-off-by: Chenyuan Yang --- drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers= /net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index e5a6f59af0b6..10b8f1fea1a2 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -2515,6 +2515,11 @@ static int pch_gbe_probe(struct pci_dev *pdev, pci_get_domain_bus_and_slot(pci_domain_nr(adapter->pdev->bus), adapter->pdev->bus->number, PCI_DEVFN(12, 4)); + if (!adapter->ptp_pdev) { + dev_err(&pdev->dev, "PTP device not found\n"); + ret =3D -ENODEV; + goto err_free_netdev; + } =20 netdev->netdev_ops =3D &pch_gbe_netdev_ops; netdev->watchdog_timeo =3D PCH_GBE_WATCHDOG_PERIOD; --=20 2.34.1