powerpc: Implement OF PCI address accessors stubs for CONFIG_PCI=n

To avoid "#ifdef CONFIG_PCI" in the drivers we should provide stubs in
place of OF PCI address accessors.

Without these stubs build breaks for drivers not strictly requiring PCI,
for example CONFIG_FB_OF=y without CONFIG_PCI:

  LD      .tmp_vmlinux1
drivers/built-in.o: In function `offb_map_reg':
offb.c:(.text+0x6e7c): undefined reference to `of_get_pci_address'

OF PCI IRQ accessors require pci_dev argument, so drivers using PCI
IRQs should depend on CONFIG_PCI anyway.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 78b7b0d494c0..eb3bd2e1c7f6 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -212,8 +212,16 @@ extern u64 of_translate_dma_address(struct device_node *dev,
  */
 extern const u32 *of_get_address(struct device_node *dev, int index,
                            u64 *size, unsigned int *flags);
+#ifdef CONFIG_PCI
 extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no,
                                u64 *size, unsigned int *flags);
+#else
+static inline const u32 *of_get_pci_address(struct device_node *dev,
+                int bar_no, u64 *size, unsigned int *flags)
+{
+        return NULL;
+}
+#endif /* CONFIG_PCI */
 
 /* Get an address as a resource. Note that if your address is
  * a PIO address, the conversion will fail if the physical address
@@ -223,8 +231,16 @@ extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no,
  */
 extern int of_address_to_resource(struct device_node *dev, int index,
                                   struct resource *r);
+#ifdef CONFIG_PCI
 extern int of_pci_address_to_resource(struct device_node *dev, int bar,
                                       struct resource *r);
+#else
+static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
+                struct resource *r)
+{
+        return -ENOSYS;
+}
+#endif /* CONFIG_PCI */
 
 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
  * size parameters.