PCI: Fix compile errors with PCI_ATS and !PCI_IOV

The ats and sroiv members of 'struct pci_dev' are required
for the ATS code already, even without IOV support compiled
in. So depend on ATS here. This is fine with PCI_IOV too
because it selects PCI_ATS. Also the prototypes for ATS
need to be available for PCI_ATS.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

include/linux/pci-ats.h

@@ -12,7 +12,7 @@ struct pci_ats {
 	unsigned int is_enabled:1;      /* Enable bit is set */
 };
 
-#ifdef CONFIG_PCI_IOV
+#ifdef CONFIG_PCI_ATS
 
 extern int pci_enable_ats(struct pci_dev *dev, int ps);
 extern void pci_disable_ats(struct pci_dev *dev);
@@ -29,7 +29,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev)
 	return dev->ats && dev->ats->is_enabled;
 }
 
-#else /* CONFIG_PCI_IOV */
+#else /* CONFIG_PCI_ATS */
 
 static inline int pci_enable_ats(struct pci_dev *dev, int ps)
 {
@@ -50,7 +50,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev)
 	return 0;
 }
 
-#endif /* CONFIG_PCI_IOV */
+#endif /* CONFIG_PCI_ATS */
 
 #ifdef CONFIG_PCI_PRI
 

include/linux/pci.h

@@ -338,7 +338,7 @@ struct pci_dev {
 	struct list_head msi_list;
 #endif
 	struct pci_vpd *vpd;
-#ifdef CONFIG_PCI_IOV
+#ifdef CONFIG_PCI_ATS
 	union {
 		struct pci_sriov *sriov;	/* SR-IOV capability related */
 		struct pci_dev *physfn;	/* the PF this VF is associated with */