of: implement pci_address_to_pio as weak function

Implement pci_address_to_pio as weak function to remove the dependency on
asm/prom.h. This is in preparation to make prom.h optional.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Grant Likely <grant.likely@linaro.org>

5 files changed, 0 insertions, 38 deletions

diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index f05bedce70d0..0ebd924902df 100644
--- a/arch/microblaze/include/asm/prom.h
+++ b/arch/microblaze/include/asm/prom.h
@@ -26,13 +26,4 @@ enum early_consoles {
 
 extern int of_early_console(void *version);
 
-/*
- * OF address retreival & translation
- */
-
-#ifdef CONFIG_PCI
-extern unsigned long pci_address_to_pio(phys_addr_t address);
-#define pci_address_to_pio pci_address_to_pio
-#endif  /* CONFIG_PCI */
-
 #endif /* _ASM_MICROBLAZE_PROM_H */
diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h
index e3dbd0e0608e..ccd2b75f152c 100644
--- a/arch/mips/include/asm/prom.h
+++ b/arch/mips/include/asm/prom.h
@@ -19,17 +19,6 @@
 
 extern void device_tree_init(void);
 
-static inline unsigned long pci_address_to_pio(phys_addr_t address)
-{
-        /*
-         * The ioport address can be directly used by inX() / outX()
-         */
-        BUG_ON(address > IO_SPACE_LIMIT);
-
-        return (unsigned long) address;
-}
-#define pci_address_to_pio pci_address_to_pio
-
 struct boot_param_header;
 
 extern void __dt_setup_arch(struct boot_param_header *bph);
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 7d0c7f3a7171..bd215f74df0f 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -30,11 +30,6 @@
 extern u64 of_translate_dma_address(struct device_node *dev,
                                     const __be32 *in_addr);
 
-#ifdef CONFIG_PCI
-extern unsigned long pci_address_to_pio(phys_addr_t address);
-#define pci_address_to_pio pci_address_to_pio
-#endif  /* CONFIG_PCI */
-
 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
  * size parameters.
  */
diff --git a/arch/x86/include/asm/prom.h b/arch/x86/include/asm/prom.h
index bade6ac3b14f..8ef2ec70858f 100644
--- a/arch/x86/include/asm/prom.h
+++ b/arch/x86/include/asm/prom.h
@@ -39,9 +39,6 @@ static inline void x86_dtb_init(void) { }
 
 extern char cmd_line[COMMAND_LINE_SIZE];
 
-#define pci_address_to_pio pci_address_to_pio
-unsigned long pci_address_to_pio(phys_addr_t addr);
-
 #define HAVE_ARCH_DEVTREE_FIXUPS
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 679d676a30d7..cffd07368547 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -27,16 +27,6 @@ char __initdata cmd_line[COMMAND_LINE_SIZE];
 
 int __initdata of_ioapic;
 
-unsigned long pci_address_to_pio(phys_addr_t address)
-{
-        /*
-         * The ioport address can be directly used by inX / outX
-         */
-        BUG_ON(address >= (1 << 16));
-        return (unsigned long)address;
-}
-EXPORT_SYMBOL_GPL(pci_address_to_pio);
-
 void __init early_init_dt_scan_chosen_arch(unsigned long node)
 {
         BUG();