PCI: Use a weak symbol for the empty version of pcibios_add_platform_entries()

I'm not sure if this is going to fly, weak symbols work on the compilers I'm
using, but whether they work for all of the affected architectures I can't say.
I've cc'ed as many arch maintainers/lists as I could find.

But assuming they do, we can use a weak empty definition of
pcibios_add_platform_entries() to avoid having an empty definition on every
arch.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

arch/ppc/kernel/pci.c

@@ -633,12 +633,6 @@ void pcibios_make_OF_bus_map(void)
 {
 }
 
-/* Add sysfs properties */
-void pcibios_add_platform_entries(struct pci_dev *pdev)
-{
-}
-
-
 static int __init
 pcibios_init(void)
 {

drivers/pci/pci-sysfs.c

@@ -600,6 +600,11 @@ static struct bin_attribute pcie_config_attr = {
 	.write = pci_write_config,
 };
 
+void __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
+{
+	return;
+}
+
 int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
 {
 	struct bin_attribute *rom_attr = NULL;

include/asm-alpha/pci.h

@@ -275,11 +275,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 	return hose->need_domain_info;
 }
 
-static inline void
-pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 struct pci_dev *alpha_gendev_to_pci(struct device *dev);
 
 #endif /* __KERNEL__ */

include/asm-arm/pci.h

@@ -76,10 +76,6 @@ pcibios_select_root(struct pci_dev *pdev, struct resource *res)
 	return root;
 }
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
  
 #endif

include/asm-cris/pci.h

@@ -89,10 +89,6 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 			       enum pci_mmap_state mmap_state, int write_combine);
 
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
 
 /* implement the pci_ DMA API in terms of the generic device dma_ one */

include/asm-frv/pci.h

@@ -22,10 +22,6 @@ struct pci_dev;
 
 #define pcibios_assign_all_busses()	0
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 extern void pcibios_set_master(struct pci_dev *dev);
 
 extern void pcibios_penalize_isa_irq(int irq);

include/asm-h8300/pci.h

@@ -22,8 +22,4 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
 
 #define PCI_DMA_BUS_IS_PHYS	(1)
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* _ASM_H8300_PCI_H */

include/asm-i386/pci.h

@@ -94,10 +94,6 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 			       enum pci_mmap_state mmap_state, int write_combine);
 
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #ifdef CONFIG_PCI
 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,

include/asm-ia64/pci.h

@@ -143,10 +143,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 	return (pci_domain_nr(bus) != 0);
 }
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 		struct pci_bus_region *region, struct resource *res);
 

include/asm-m68k/pci.h

@@ -54,8 +54,4 @@ static inline void pcibios_penalize_isa_irq(int irq, int active)
  */
 #define PCI_DMA_BUS_IS_PHYS	(1)
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* _ASM_M68K_PCI_H */

include/asm-m68knommu/pci.h

@@ -30,10 +30,6 @@ static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
  */
 #define pci_dac_dma_supported(pci_dev, mask) (0)
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* CONFIG_COMEMPCI */
 
 #endif /* M68KNOMMU_PCI_H */

include/asm-mips/pci.h

@@ -181,10 +181,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 /* implement the pci_ DMA API in terms of the generic device dma_ one */
 #include <asm-generic/pci-dma-compat.h>
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 /* Do platform specific device initialization at pci_enable_device() time */
 extern int pcibios_plat_dev_init(struct pci_dev *dev);
 

include/asm-parisc/pci.h

@@ -284,10 +284,6 @@ pcibios_select_root(struct pci_dev *pdev, struct resource *res)
 	return root;
 }
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 static inline void pcibios_penalize_isa_irq(int irq, int active)
 {
 	/* We don't need to penalize isa irq's */

include/asm-powerpc/pci.h

@@ -243,8 +243,6 @@ extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 
 extern int pci_read_irq_line(struct pci_dev *dev);
 
-extern void pcibios_add_platform_entries(struct pci_dev *dev);
-
 struct file;
 extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
 					 unsigned long pfn,

include/asm-ppc/pci.h

@@ -145,8 +145,6 @@ pcibios_select_root(struct pci_dev *pdev, struct resource *res)
 	return root;
 }
 
-extern void pcibios_add_platform_entries(struct pci_dev *dev);
-
 struct file;
 extern pgprot_t	pci_phys_mem_access_prot(struct file *file,
 					 unsigned long pfn,

include/asm-sh/pci.h

@@ -134,10 +134,6 @@ int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
 int pciauto_assign_resources(int busno, struct pci_channel *hose);
 #endif
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
 
 /* generic pci stuff */

include/asm-sh64/pci.h

@@ -104,10 +104,6 @@ extern void pcibios_fixup_irqs(void);
 extern int pciauto_assign_resources(int busno, struct pci_channel *hose);
 #endif
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
 
 /* generic pci stuff */

include/asm-sparc/pci.h

@@ -154,10 +154,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 }
 #endif
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #define PCI_DMA_ERROR_CODE      (~(dma_addr_t)0x0)
 
 static inline int pci_dma_mapping_error(dma_addr_t dma_addr)

include/asm-sparc64/pci.h

@@ -303,10 +303,6 @@ pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
 
 extern struct resource *pcibios_select_root(struct pci_dev *, struct resource *);
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {
 	return PCI_IRQ_NONE;

include/asm-v850/pci.h

@@ -116,8 +116,4 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap (struct pci_dev *dev, void __iomem *addr);
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __V850_PCI_H__ */

include/asm-x86_64/pci.h

@@ -135,10 +135,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 			       enum pci_mmap_state mmap_state, int write_combine);
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
 
 /* generic pci stuff */

include/asm-xtensa/pci.h

@@ -74,10 +74,6 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
 #define HAVE_PCI_MMAP	1
 
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
 #endif /* __KERNEL__ */
 
 /* Implement the pci_ DMA API in terms of the generic device dma_ one */

include/linux/pci.h

@@ -881,5 +881,7 @@ extern int pci_pci_problems;
 extern unsigned long pci_cardbus_io_size;
 extern unsigned long pci_cardbus_mem_size;
 
+extern void pcibios_add_platform_entries(struct pci_dev *dev);
+
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */