Add pci_controller_ops.reset_secondary_bus,
shadowing ppc_md.pcibios_reset_secondary_bus.
Add a shim, and changes the callsites to use the shim.
Use pcibios_reset_secondary_bus_shim, as both
pcibios_reset_secondary_bus and pci_reset_secondary_bus
are already taken.
Signed-off-by: Daniel Axtens <d...@axtens.net>
---
v1 --> v2:
- Better commit message
- Use phb in favour of hose
- Make shim name namespaced, not the raw pci_controller_ops name.
---
arch/powerpc/include/asm/pci-bridge.h | 17 +++++++++++++++++
arch/powerpc/kernel/pci-common.c | 7 +------
2 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm/pci-bridge.h
b/arch/powerpc/include/asm/pci-bridge.h
index cc91bc0..d2cba2f 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -34,6 +34,7 @@ struct pci_controller_ops {
/* Called during PCI resource reassignment */
resource_size_t (*window_alignment)(struct pci_bus *, unsigned long
type);
+ void (*reset_secondary_bus)(struct pci_dev *dev);
};
/*
@@ -344,5 +345,21 @@ static inline resource_size_t pci_window_alignment(struct
pci_bus *bus,
return 1;
}
+static inline void pcibios_reset_secondary_bus_shim(struct pci_dev *dev)
+{
+ struct pci_controller *phb = pci_bus_to_host(dev->bus);
+
+ if (phb->controller_ops.reset_secondary_bus)
+ phb->controller_ops.reset_secondary_bus(dev);
+ else if (ppc_md.pcibios_reset_secondary_bus)
+ ppc_md.pcibios_reset_secondary_bus(dev);
+ else
+ /*
+ * Fallback to the generic function if no
+ * platform-specific one is provided
+ */
+ pci_reset_secondary_bus(dev);
+}
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_PCI_BRIDGE_H */
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index f1512b5..8b3616a 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -114,12 +114,7 @@ resource_size_t pcibios_window_alignment(struct pci_bus
*bus,
void pcibios_reset_secondary_bus(struct pci_dev *dev)
{
- if (ppc_md.pcibios_reset_secondary_bus) {
- ppc_md.pcibios_reset_secondary_bus(dev);
- return;
- }
-
- pci_reset_secondary_bus(dev);
+ pcibios_reset_secondary_bus_shim(dev);
}
static resource_size_t pcibios_io_size(const struct pci_controller *hose)
--
2.1.4
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