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Tue, 5 May 2026 13:52:53 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Tue, 5 May 2026 13:52:53 +0800 From: JB Tsai To: , CC: , , , , , , , , , , Jeff Hsu Subject: [PATCH] wifi: mt76: mt7925: Add coredump callback in pci_driver Date: Tue, 5 May 2026 13:52:52 +0800 Message-ID: <20260505055252.2558613-1-jb.tsai@mediatek.com> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain X-MTK: N From: Jeff Hsu =0D Register coredump callback(mt7925_coredump) in pci_driver,=0D it can let platform can trigger core dump to collect the=0D log and recover back after coredump complete without debugfs=0D =0D Some platform not have debugfs=0D =0D Signed-off-by: Jeff Hsu =0D ---=0D drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 1 +=0D drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 12 ++++++++++++=0D 2 files changed, 13 insertions(+)=0D =0D diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/= wireless/mediatek/mt76/mt7925/mcu.c=0D index 37cdf3e8a067..cd502166a7f9 100644=0D --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c=0D +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c=0D @@ -1014,6 +1014,7 @@ int mt7925_mcu_chip_config(struct mt792x_dev *dev, co= nst char *cmd)=0D return mt76_mcu_send_msg(&dev->mt76, MCU_UNI_CMD(CHIP_CONFIG),=0D &req, sizeof(req), false);=0D }=0D +EXPORT_SYMBOL_GPL(mt7925_mcu_chip_config);=0D =0D int mt7925_mcu_set_deep_sleep(struct mt792x_dev *dev, bool enable)=0D {=0D diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/= wireless/mediatek/mt76/mt7925/pci.c=0D index c4161754c01d..5b3e62e5f157 100644=0D --- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c=0D +++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c=0D @@ -610,6 +610,17 @@ static int mt7925_pci_restore(struct device *device)=0D return _mt7925_pci_resume(device, true);=0D }=0D =0D +static void mt7925_coredump(struct device *dev)=0D +{=0D + struct pci_dev *pdev =3D to_pci_dev(device);=0D + struct mt76_dev *mdev =3D pci_get_drvdata(pdev);=0D + struct mt792x_dev *dev_792x =3D container_of(mdev, struct mt792x_dev, mt7= 6);=0D +=0D + mt792x_mutex_acquire(dev_792x);=0D + mt7925_mcu_chip_config(dev_792x, "assert");=0D + mt792x_mutex_release(dev_792x);=0D +}=0D +=0D static const struct dev_pm_ops mt7925_pm_ops =3D {=0D .suspend =3D pm_sleep_ptr(mt7925_pci_suspend),=0D .resume =3D pm_sleep_ptr(mt7925_pci_resume),=0D @@ -626,6 +637,7 @@ static struct pci_driver mt7925_pci_driver =3D {=0D .remove =3D mt7925_pci_remove,=0D .shutdown =3D mt7925_pci_shutdown,=0D .driver.pm =3D pm_sleep_ptr(&mt7925_pm_ops),=0D + .driver.coredump =3D mt7925_coredump,=0D };=0D =0D module_pci_driver(mt7925_pci_driver);=0D -- =0D 2.45.2=0D =0D