[SCSI] aic7xxx: Add suspend/resume support
The aic7xxx driver already contains fragments for suspend/resume
support. So we only need to update them to the current interface
and have full PCI suspend/resume.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Tested-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index ea5687d..4488946 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -49,6 +49,8 @@
static int ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
u_long *bus_addr,
uint8_t __iomem **maddr);
+static int ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg);
+static int ahc_linux_pci_dev_resume(struct pci_dev *pdev);
static void ahc_linux_pci_dev_remove(struct pci_dev *pdev);
/* Define the macro locally since it's different for different class of chips.
@@ -133,10 +135,54 @@
static struct pci_driver aic7xxx_pci_driver = {
.name = "aic7xxx",
.probe = ahc_linux_pci_dev_probe,
+#ifdef CONFIG_PM
+ .suspend = ahc_linux_pci_dev_suspend,
+ .resume = ahc_linux_pci_dev_resume,
+#endif
.remove = ahc_linux_pci_dev_remove,
.id_table = ahc_linux_pci_id_table
};
+static int
+ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
+{
+ struct ahc_softc *ahc = pci_get_drvdata(pdev);
+ int rc;
+
+ if ((rc = ahc_suspend(ahc)))
+ return rc;
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+
+ if (mesg.event == PM_EVENT_SUSPEND)
+ pci_set_power_state(pdev, PCI_D3hot);
+
+ return rc;
+}
+
+static int
+ahc_linux_pci_dev_resume(struct pci_dev *pdev)
+{
+ struct ahc_softc *ahc = pci_get_drvdata(pdev);
+ int rc;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ if ((rc = pci_enable_device(pdev))) {
+ dev_printk(KERN_ERR, &pdev->dev,
+ "failed to enable device after resume (%d)\n", rc);
+ return rc;
+ }
+
+ pci_set_master(pdev);
+
+ ahc_pci_resume(ahc);
+
+ return (ahc_resume(ahc));
+}
+
static void
ahc_linux_pci_dev_remove(struct pci_dev *pdev)
{