i40e: Use dev_get_drvdata

Instead of using to_pci_dev + pci_get_drvdata,
use dev_get_drvdata to make code simpler.
Signed-off-by: NChuhong Yuan <hslester96@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -15605,8 +15605,7 @@ static void i40e_shutdown(struct pci_dev *pdev)
  **/
 static int __maybe_unused i40e_suspend(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct i40e_pf *pf = pci_get_drvdata(pdev);
+	struct i40e_pf *pf = dev_get_drvdata(dev);
 	struct i40e_hw *hw = &pf->hw;
 
 	/* If we're already suspended, then there is nothing to do */
@@ -15656,8 +15655,7 @@ static int __maybe_unused i40e_suspend(struct device *dev)
  **/
 static int __maybe_unused i40e_resume(struct device *dev)
 {
-	struct pci_dev *pdev = to_pci_dev(dev);
-	struct i40e_pf *pf = pci_get_drvdata(pdev);
+	struct i40e_pf *pf = dev_get_drvdata(dev);
 	int err;
 
 	/* If we're not suspended, then there is nothing to do */
@@ -15674,7 +15672,7 @@ static int __maybe_unused i40e_resume(struct device *dev)
 	 */
 	err = i40e_restore_interrupt_scheme(pf);
 	if (err) {
-		dev_err(&pdev->dev, "Cannot restore interrupt scheme: %d\n",
+		dev_err(dev, "Cannot restore interrupt scheme: %d\n",
 			err);
 	}