netdev - [PATCH net-next 04/11] net: hns3: Implement shutdown ops in hns3 pci driver

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Date:   Mon, 3 Sep 2018 11:21:49 +0100
From:   Salil Mehta <salil.mehta@...wei.com>
To:     <davem@...emloft.net>
CC:     <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <lipeng321@...wei.com>, <mehta.salil@...src.net>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, Yunsheng Lin <linyunsheng@...wei.com>
Subject: [PATCH net-next 04/11] net: hns3: Implement shutdown ops in hns3 pci driver

From: Yunsheng Lin <linyunsheng@...wei.com>

This patch implements shutdown ops in hns3 pci driver, which
unloads the hns3 driver and set the power state to D3hot.

Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 955c4ab..75e8ee9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1662,11 +1662,24 @@ static int hns3_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
 	return 0;
 }
 
+static void hns3_shutdown(struct pci_dev *pdev)
+{
+	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(pdev);
+
+	hnae3_unregister_ae_dev(ae_dev);
+	devm_kfree(&pdev->dev, ae_dev);
+	pci_set_drvdata(pdev, NULL);
+
+	if (system_state == SYSTEM_POWER_OFF)
+		pci_set_power_state(pdev, PCI_D3hot);
+}
+
 static struct pci_driver hns3_driver = {
 	.name     = hns3_driver_name,
 	.id_table = hns3_pci_tbl,
 	.probe    = hns3_probe,
 	.remove   = hns3_remove,
+	.shutdown = hns3_shutdown,
 	.sriov_configure = hns3_pci_sriov_configure,
 };
 
-- 
2.7.4