From: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Date: Wed, 1 Jul 2020 16:50:50 +0000 (+0530)
Subject: ena_netdev: use generic power management
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=817a89ae10a7fa78449d7f6270550e0d40236924;p=linux.git

ena_netdev: use generic power management

With legacy PM, drivers themselves were responsible for managing the
device's power states and takes care of register states.

After upgrading to the generic structure, PCI core will take care of
required tasks and drivers should do only device-specific operations.

Compile-tested only.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index dda4b8fc9525e..91be3ffa1c5cc 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -4420,13 +4420,12 @@ static void ena_shutdown(struct pci_dev *pdev)
 	__ena_shutoff(pdev, true);
 }
 
-#ifdef CONFIG_PM
 /* ena_suspend - PM suspend callback
- * @pdev: PCI device information struct
- * @state:power state
+ * @dev_d: Device information struct
  */
-static int ena_suspend(struct pci_dev *pdev,  pm_message_t state)
+static int __maybe_unused ena_suspend(struct device *dev_d)
 {
+	struct pci_dev *pdev = to_pci_dev(dev_d);
 	struct ena_adapter *adapter = pci_get_drvdata(pdev);
 
 	u64_stats_update_begin(&adapter->syncp);
@@ -4445,12 +4444,11 @@ static int ena_suspend(struct pci_dev *pdev,  pm_message_t state)
 }
 
 /* ena_resume - PM resume callback
- * @pdev: PCI device information struct
- *
+ * @dev_d: Device information struct
  */
-static int ena_resume(struct pci_dev *pdev)
+static int __maybe_unused ena_resume(struct device *dev_d)
 {
-	struct ena_adapter *adapter = pci_get_drvdata(pdev);
+	struct ena_adapter *adapter = dev_get_drvdata(dev_d);
 	int rc;
 
 	u64_stats_update_begin(&adapter->syncp);
@@ -4462,7 +4460,8 @@ static int ena_resume(struct pci_dev *pdev)
 	rtnl_unlock();
 	return rc;
 }
-#endif
+
+static SIMPLE_DEV_PM_OPS(ena_pm_ops, ena_suspend, ena_resume);
 
 static struct pci_driver ena_pci_driver = {
 	.name		= DRV_MODULE_NAME,
@@ -4470,10 +4469,7 @@ static struct pci_driver ena_pci_driver = {
 	.probe		= ena_probe,
 	.remove		= ena_remove,
 	.shutdown	= ena_shutdown,
-#ifdef CONFIG_PM
-	.suspend    = ena_suspend,
-	.resume     = ena_resume,
-#endif
+	.driver.pm	= &ena_pm_ops,
 	.sriov_configure = pci_sriov_configure_simple,
 };