PCI: Turn pcibios_penalize_isa_irq() into a weak function

pcibios_penalize_isa_irq() is only implemented by x86 now, and legacy ISA
is not used by some architectures.  Make pcibios_penalize_isa_irq() a
__weak function to simplify the code.  This removes the need for new
platforms to add stub implementations of pcibios_penalize_isa_irq().

[bhelgaas: changelog, comments]
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

arch/alpha/include/asm/pci.h

@@ -59,11 +59,6 @@ struct pci_controller {
 
 extern void pcibios_set_master(struct pci_dev *dev);
 
-extern inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /* IOMMU controls.  */
 
 /* The PCI address space does not equal the physical memory address space.

arch/arm/include/asm/pci.h

@@ -31,11 +31,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 }
 #endif /* CONFIG_PCI_DOMAINS */
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /*
  * The PCI address space does equal the physical memory address space.
  * The networking and block device layers use this boolean for bounce

arch/blackfin/include/asm/pci.h

@@ -10,9 +10,4 @@
 #define PCIBIOS_MIN_IO 0x00001000
 #define PCIBIOS_MIN_MEM 0x10000000
 
-static inline void pcibios_penalize_isa_irq(int irq)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #endif				/* _ASM_BFIN_PCI_H */

arch/cris/include/asm/pci.h

@@ -20,7 +20,6 @@ void pcibios_config_init(void);
 struct pci_bus * pcibios_scan_root(int bus);
 
 void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
 struct irq_routing_table *pcibios_get_irq_routing_table(void);
 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
 

arch/frv/include/asm/pci.h

@@ -24,8 +24,6 @@ struct pci_dev;
 
 extern void pcibios_set_master(struct pci_dev *dev);
 
-extern void pcibios_penalize_isa_irq(int irq);
-
 #ifdef CONFIG_MMU
 extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
 extern void consistent_free(void *vaddr);

arch/frv/mb93090-mb00/pci-irq.c

@@ -55,10 +55,6 @@ void __init pcibios_fixup_irqs(void)
 	}
 }
 
-void __init pcibios_penalize_isa_irq(int irq)
-{
-}
-
 void pcibios_enable_irq(struct pci_dev *dev)
 {
 	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);

arch/ia64/include/asm/pci.h

@@ -50,12 +50,6 @@ struct pci_dev;
 extern unsigned long ia64_max_iommu_merge_mask;
 #define PCI_DMA_BUS_IS_PHYS	(ia64_max_iommu_merge_mask == ~0UL)
 
-static inline void
-pcibios_penalize_isa_irq (int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #include <asm-generic/pci-dma-compat.h>
 
 #ifdef CONFIG_PCI

arch/microblaze/include/asm/pci.h

@@ -44,11 +44,6 @@ struct pci_dev;
  */
 #define pcibios_assign_all_busses()	0
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #ifdef CONFIG_PCI
 extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
 extern struct dma_map_ops *get_pci_dma_ops(void);

arch/mips/include/asm/pci.h

@@ -73,11 +73,6 @@ extern unsigned long PCIBIOS_MIN_MEM;
 
 extern void pcibios_set_master(struct pci_dev *dev);
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #define HAVE_PCI_MMAP
 
 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,

arch/mn10300/include/asm/pci.h

@@ -48,7 +48,6 @@ extern void unit_pci_init(void);
 #define PCIBIOS_MIN_MEM		0xB8000000
 
 void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
 
 /* Dynamic DMA mapping stuff.
  * i386 has everything mapped statically.

arch/mn10300/unit-asb2305/pci-irq.c

@@ -40,10 +40,6 @@ void __init pcibios_fixup_irqs(void)
 	}
 }
 
-void __init pcibios_penalize_isa_irq(int irq)
-{
-}
-
 void pcibios_enable_irq(struct pci_dev *dev)
 {
 	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);

arch/parisc/include/asm/pci.h

@@ -215,11 +215,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 }
 #endif
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't need to penalize isa irq's */
-}
-
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {
 	return channel ? 15 : 14;

arch/powerpc/include/asm/pci.h

@@ -46,11 +46,6 @@ struct pci_dev;
 #define pcibios_assign_all_busses() \
 	(pci_has_flag(PCI_REASSIGN_ALL_BUS))
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {

arch/sh/include/asm/pci.h

@@ -70,11 +70,6 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 	enum pci_mmap_state mmap_state, int write_combine);
 extern void pcibios_set_master(struct pci_dev *dev);
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /* Dynamic DMA mapping stuff.
  * SuperH has everything mapped statically like x86.
  */

arch/sparc/include/asm/pci_32.h

@@ -16,11 +16,6 @@
 
 #define PCI_IRQ_NONE		0xffffffff
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /* Dynamic DMA mapping stuff.
  */
 #define PCI_DMA_BUS_IS_PHYS	(0)

arch/sparc/include/asm/pci_64.h

@@ -16,11 +16,6 @@
 
 #define PCI_IRQ_NONE		0xffffffff
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /* The PCI address space does not equal the physical memory
  * address space.  The networking and block device layers use
  * this boolean for bounce buffer decisions.

arch/unicore32/include/asm/pci.h

@@ -18,11 +18,6 @@
 #include <asm-generic/pci.h>
 #include <mach/hardware.h> /* for PCIBIOS_MIN_* */
 
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 #ifdef CONFIG_PCI
 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,

arch/x86/include/asm/pci.h

@@ -68,7 +68,6 @@ void pcibios_config_init(void);
 void pcibios_scan_root(int bus);
 
 void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq, int active);
 struct irq_routing_table *pcibios_get_irq_routing_table(void);
 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
 

arch/xtensa/include/asm/pci.h

@@ -22,11 +22,6 @@
 
 extern struct pci_controller* pcibios_alloc_controller(void);
 
-static inline void pcibios_penalize_isa_irq(int irq)
-{
-	/* We don't do dynamic PCI IRQ allocation */
-}
-
 /* Assume some values. (We should revise them, if necessary) */
 
 #define PCIBIOS_MIN_IO		0x2000

drivers/pci/pci.c

@@ -1468,6 +1468,17 @@ void __weak pcibios_release_device(struct pci_dev *dev) {}
  */
 void __weak pcibios_disable_device (struct pci_dev *dev) {}
 
+/**
+ * pcibios_penalize_isa_irq - penalize an ISA IRQ
+ * @irq: ISA IRQ to penalize
+ * @active: IRQ active or not
+ *
+ * Permits the platform to provide architecture-specific functionality when
+ * penalizing ISA IRQs. This is the default implementation. Architecture
+ * implementations can override this.
+ */
+void __weak pcibios_penalize_isa_irq(int irq, int active) {}
+
 static void do_pci_disable_device(struct pci_dev *dev)
 {
 	u16 pci_command;

include/linux/pci.h

@@ -1578,6 +1578,7 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev,
 				 enum pcie_reset_state state);
 int pcibios_add_device(struct pci_dev *dev);
 void pcibios_release_device(struct pci_dev *dev);
+void pcibios_penalize_isa_irq(int irq, int active);
 
 #ifdef CONFIG_HIBERNATE_CALLBACKS
 extern struct dev_pm_ops pcibios_pm_ops;