Why? Because: A) It's not modified and so it can be made const. const is good. B) If one has a function that was given a const pci_bus pointer and you want to get a pointer to its pci_controller, you'll get a warning from gcc when you use pci_bus_to_host(). This is the right way to stop that warning.
Signed-off-by: Trent Piepho <[EMAIL PROTECTED]> --- include/asm-powerpc/pci-bridge.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h index e5802c6..b95d033 100644 --- a/include/asm-powerpc/pci-bridge.h +++ b/include/asm-powerpc/pci-bridge.h @@ -117,7 +117,7 @@ struct pci_controller { #ifndef CONFIG_PPC64 -static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus) +static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus) { return bus->sysdata; } @@ -235,7 +235,7 @@ extern void pcibios_fixup_new_pci_devices(struct pci_bus *bus); extern int pcibios_remove_root_bus(struct pci_controller *phb); -static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus) +static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus) { struct device_node *busdn = bus->sysdata; -- 1.5.4.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev