PCI: Don't pass pci_dev to pci_ext_cfg_avail()

pci_ext_cfg_avail() doesn't use the "struct pci_dev *" passed to
it, and there's no requirement that a host bridge even be represented
by a pci_dev.  This drops the pci_ext_cfg_avail() parameter.

[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

4 files changed, 5 insertions, 6 deletions

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 720e973fc34a..52dbf1aeeb63 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -626,7 +626,7 @@ void pcibios_disable_device (struct pci_dev *dev)
                 pcibios_disable_irq(dev);
 }
 
-int pci_ext_cfg_avail(struct pci_dev *dev)
+int pci_ext_cfg_avail(void)
 {
         if (raw_pci_ext_ops)
                 return 1;
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 66f3ae74d130..50f329d7ccff 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -564,7 +564,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
                 acpi_pci_bridge_scan(child);
 
         /* Indicate support for various _OSC capabilities. */
-        if (pci_ext_cfg_avail(root->bus->self))
+        if (pci_ext_cfg_avail())
                 flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
         if (pcie_aspm_support_enabled())
                 flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 54858838f098..01b68bfa2321 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3833,14 +3833,13 @@ static void __devinit pci_no_domains(void)
 }
 
 /**
- * pci_ext_cfg_enabled - can we access extended PCI config space?
- * @dev: The PCI device of the root bridge.
+ * pci_ext_cfg_avail - can we access extended PCI config space?
  *
  * Returns 1 if we can access PCI extended config space (offsets
  * greater than 0xff). This is the default implementation. Architecture
  * implementations can override this.
  */
-int __weak pci_ext_cfg_avail(struct pci_dev *dev)
+int __weak pci_ext_cfg_avail(void)
 {
         return 1;
 }
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 786094254d57..9253af697ca4 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1604,7 +1604,7 @@ static inline void pci_mmcfg_early_init(void) { }
 static inline void pci_mmcfg_late_init(void) { }
 #endif
 
-int pci_ext_cfg_avail(struct pci_dev *dev);
+int pci_ext_cfg_avail(void);
 
 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);