diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
index 0b4888199699..b8f1848ecef2 100644
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -1756,11 +1756,10 @@ static void twl_remove(struct pci_dev *pdev)
 	twl_device_extension_count--;
 } /* End twl_remove() */
 
-#ifdef CONFIG_PM
 /* This function is called on PCI suspend */
-static int twl_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused twl_suspend(struct device *dev)
 {
-	struct Scsi_Host *host = pci_get_drvdata(pdev);
+	struct Scsi_Host *host = dev_get_drvdata(dev);
 	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
 
 	printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no);
@@ -1779,31 +1778,18 @@ static int twl_suspend(struct pci_dev *pdev, pm_message_t state)
 	/* Clear doorbell interrupt */
 	TWL_CLEAR_DB_INTERRUPT(tw_dev);
 
-	pci_save_state(pdev);
-	pci_disable_device(pdev);
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
-
 	return 0;
 } /* End twl_suspend() */
 
 /* This function is called on PCI resume */
-static int twl_resume(struct pci_dev *pdev)
+static int __maybe_unused twl_resume(struct device *dev)
 {
 	int retval = 0;
+	struct pci_dev *pdev = to_pci_dev(dev);
 	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
 
 	printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no);
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
-
-	retval = pci_enable_device(pdev);
-	if (retval) {
-		TW_PRINTK(tw_dev->host, TW_DRIVER, 0x24, "Enable device failed during resume");
-		return retval;
-	}
-
-	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
 	retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
@@ -1841,11 +1827,9 @@ static int twl_resume(struct pci_dev *pdev)
 
 out_disable_device:
 	scsi_remove_host(host);
-	pci_disable_device(pdev);
 
 	return retval;
 } /* End twl_resume() */
-#endif
 
 /* PCI Devices supported by this driver */
 static struct pci_device_id twl_pci_tbl[] = {
@@ -1854,16 +1838,15 @@ static struct pci_device_id twl_pci_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, twl_pci_tbl);
 
+static SIMPLE_DEV_PM_OPS(twl_pm_ops, twl_suspend, twl_resume);
+
 /* pci_driver initializer */
 static struct pci_driver twl_driver = {
 	.name		= "3w-sas",
 	.id_table	= twl_pci_tbl,
 	.probe		= twl_probe,
 	.remove		= twl_remove,
-#ifdef CONFIG_PM
-	.suspend	= twl_suspend,
-	.resume		= twl_resume,
-#endif
+	.driver.pm	= &twl_pm_ops,
 	.shutdown	= twl_shutdown
 };