[SCSI] aic7xxx: fix warnings with CONFIG_PM disabled

  CC [M]  drivers/scsi/aic7xxx/aic7xxx_osm_pci.o
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:148: warning: 'ahc_linux_pci_dev_suspend' defined but not used
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c:166: warning: 'ahc_linux_pci_dev_resume' defined but not used

This moves aic7xxx_pci_driver struct, removes some forward declarations,
and adds some ifdef CONFIG_PM.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/aic7xxx/aic7xxx.h

@@ -1143,7 +1143,9 @@ struct ahc_pci_identity	*ahc_find_pci_device(ahc_dev_softc_t);
 int			 ahc_pci_config(struct ahc_softc *,
 					struct ahc_pci_identity *);
 int			 ahc_pci_test_register_access(struct ahc_softc *);
+#ifdef CONFIG_PM
 void			 ahc_pci_resume(struct ahc_softc *ahc);
+#endif
 
 /*************************** EISA/VL Front End ********************************/
 struct aic7770_identity *aic7770_find_device(uint32_t);
@@ -1170,8 +1172,10 @@ int			 ahc_chip_init(struct ahc_softc *ahc);
 int			 ahc_init(struct ahc_softc *ahc);
 void			 ahc_intr_enable(struct ahc_softc *ahc, int enable);
 void			 ahc_pause_and_flushwork(struct ahc_softc *ahc);
+#ifdef CONFIG_PM
 int			 ahc_suspend(struct ahc_softc *ahc); 
 int			 ahc_resume(struct ahc_softc *ahc);
+#endif
 void			 ahc_set_unit(struct ahc_softc *, int);
 void			 ahc_set_name(struct ahc_softc *, char *);
 void			 ahc_alloc_scbs(struct ahc_softc *ahc);

drivers/scsi/aic7xxx/aic7xxx_core.c

@@ -5078,6 +5078,7 @@ ahc_pause_and_flushwork(struct ahc_softc *ahc)
 	ahc->flags &= ~AHC_ALL_INTERRUPTS;
 }
 
+#ifdef CONFIG_PM
 int
 ahc_suspend(struct ahc_softc *ahc)
 {
@@ -5113,7 +5114,7 @@ ahc_resume(struct ahc_softc *ahc)
 	ahc_restart(ahc);
 	return (0);
 }
-
+#endif
 /************************** Busy Target Table *********************************/
 /*
  * Return the untagged transaction id for a given target/channel lun.

drivers/scsi/aic7xxx/aic7xxx_osm_pci.c

@@ -42,17 +42,6 @@
 #include "aic7xxx_osm.h"
 #include "aic7xxx_pci.h"
 
-static int	ahc_linux_pci_dev_probe(struct pci_dev *pdev,
-					const struct pci_device_id *ent);
-static int	ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc,
-						u_long *base);
-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.
 */
 #define ID(x)	ID_C(x, PCI_CLASS_STORAGE_SCSI)
@@ -132,17 +121,7 @@ static struct pci_device_id ahc_linux_pci_id_table[] = {
 
 MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table);
 
-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)
 {
@@ -182,6 +161,7 @@ ahc_linux_pci_dev_resume(struct pci_dev *pdev)
 
 	return (ahc_resume(ahc));
 }
+#endif
 
 static void
 ahc_linux_pci_dev_remove(struct pci_dev *pdev)
@@ -289,6 +269,17 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return (0);
 }
 
+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
+};
+
 int
 ahc_linux_pci_init(void)
 {

drivers/scsi/aic7xxx/aic7xxx_pci.c

@@ -2020,6 +2020,7 @@ ahc_pci_chip_init(struct ahc_softc *ahc)
 	return (ahc_chip_init(ahc));
 }
 
+#ifdef CONFIG_PM
 void
 ahc_pci_resume(struct ahc_softc *ahc)
 {
@@ -2051,6 +2052,7 @@ ahc_pci_resume(struct ahc_softc *ahc)
 		ahc_release_seeprom(&sd);
 	}
 }
+#endif
 
 static int
 ahc_aic785X_setup(struct ahc_softc *ahc)