net: hibmcge: support pci_driver.shutdown()

support pci_driver.shutdown() for hibmcge driver.

Signed-off-by: Jijie Shao <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Jijie Shao

drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c

@@ -472,6 +472,22 @@ static int hbg_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return 0;
 }
 
+static void hbg_shutdown(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+
+	rtnl_lock();
+	if (netif_running(netdev))
+		dev_close(netdev);
+	rtnl_unlock();
+
+	pci_disable_device(pdev);
+	pci_set_drvdata(pdev, NULL);
+
+	if (system_state == SYSTEM_POWER_OFF)
+		pci_set_power_state(pdev, PCI_D3hot);
+}
+
 static const struct pci_device_id hbg_pci_tbl[] = {
 	{PCI_VDEVICE(HUAWEI, 0x3730), 0},
 	{ }
@@ -482,6 +498,7 @@ static struct pci_driver hbg_driver = {
 	.name		= "hibmcge",
 	.id_table	= hbg_pci_tbl,
 	.probe		= hbg_probe,
+	.shutdown	= hbg_shutdown,
 };
 
 static int __init hbg_module_init(void)