diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index 60828af7506a..9321d4239932 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -147,9 +147,8 @@ static void pch_phub_read_modify_write_reg(struct pch_phub_reg *chip,
 	iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr);
 }
 
-#ifdef CONFIG_PM
 /* pch_phub_save_reg_conf - saves register configuration */
-static void pch_phub_save_reg_conf(struct pci_dev *pdev)
+static void __maybe_unused pch_phub_save_reg_conf(struct pci_dev *pdev)
 {
 	unsigned int i;
 	struct pch_phub_reg *chip = pci_get_drvdata(pdev);
@@ -210,7 +209,7 @@ static void pch_phub_save_reg_conf(struct pci_dev *pdev)
 }
 
 /* pch_phub_restore_reg_conf - restore register configuration */
-static void pch_phub_restore_reg_conf(struct pci_dev *pdev)
+static void __maybe_unused pch_phub_restore_reg_conf(struct pci_dev *pdev)
 {
 	unsigned int i;
 	struct pch_phub_reg *chip = pci_get_drvdata(pdev);
@@ -270,7 +269,6 @@ static void pch_phub_restore_reg_conf(struct pci_dev *pdev)
 	if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
 		iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET);
 }
-#endif
 
 /**
  * pch_phub_read_serial_rom() - Reading Serial ROM
@@ -835,48 +833,19 @@ static void pch_phub_remove(struct pci_dev *pdev)
 	kfree(chip);
 }
 
-#ifdef CONFIG_PM
-
-static int pch_phub_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused pch_phub_suspend(struct device *dev_d)
 {
-	int ret;
-
-	pch_phub_save_reg_conf(pdev);
-	ret = pci_save_state(pdev);
-	if (ret) {
-		dev_err(&pdev->dev,
-			" %s -pci_save_state returns %d\n", __func__, ret);
-		return ret;
-	}
-	pci_enable_wake(pdev, PCI_D3hot, 0);
-	pci_disable_device(pdev);
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
+	device_wakeup_disable(dev_d);
 
 	return 0;
 }
 
-static int pch_phub_resume(struct pci_dev *pdev)
+static int __maybe_unused pch_phub_resume(struct device *dev_d)
 {
-	int ret;
-
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
-	ret = pci_enable_device(pdev);
-	if (ret) {
-		dev_err(&pdev->dev,
-		"%s-pci_enable_device failed(ret=%d) ", __func__, ret);
-		return ret;
-	}
-
-	pci_enable_wake(pdev, PCI_D3hot, 0);
-	pch_phub_restore_reg_conf(pdev);
+	device_wakeup_disable(dev_d);
 
 	return 0;
 }
-#else
-#define pch_phub_suspend NULL
-#define pch_phub_resume NULL
-#endif /* CONFIG_PM */
 
 static const struct pci_device_id pch_phub_pcidev_id[] = {
 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB),       1,  },
@@ -888,13 +857,14 @@ static const struct pci_device_id pch_phub_pcidev_id[] = {
 };
 MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id);
 
+static SIMPLE_DEV_PM_OPS(pch_phub_pm_ops, pch_phub_suspend, pch_phub_resume);
+
 static struct pci_driver pch_phub_driver = {
 	.name = "pch_phub",
 	.id_table = pch_phub_pcidev_id,
 	.probe = pch_phub_probe,
 	.remove = pch_phub_remove,
-	.suspend = pch_phub_suspend,
-	.resume = pch_phub_resume
+	.driver.pm = &pch_phub_pm_ops,
 };
 
 module_pci_driver(pch_phub_driver);