diff options
Diffstat (limited to 'arch/ppc64/kernel')
| -rw-r--r-- | arch/ppc64/kernel/pci_dn.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/arch/ppc64/kernel/pci_dn.c b/arch/ppc64/kernel/pci_dn.c index 1a443a7ada4..12c4c9e9bbc 100644 --- a/arch/ppc64/kernel/pci_dn.c +++ b/arch/ppc64/kernel/pci_dn.c @@ -43,7 +43,7 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data) u32 *regs; struct pci_dn *pdn; - if (phb->is_dynamic) + if (mem_init_done) pdn = kmalloc(sizeof(*pdn), GFP_KERNEL); else pdn = alloc_bootmem(sizeof(*pdn)); @@ -120,6 +120,14 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre, return NULL; } +/** + * pci_devs_phb_init_dynamic - setup pci devices under this PHB + * phb: pci-to-host bridge (top-level bridge connecting to cpu) + * + * This routine is called both during boot, (before the memory + * subsystem is set up, before kmalloc is valid) and during the + * dynamic lpar operation of adding a PHB to a running system. + */ void __devinit pci_devs_phb_init_dynamic(struct pci_controller *phb) { struct device_node * dn = (struct device_node *) phb->arch_data; @@ -201,9 +209,14 @@ static struct notifier_block pci_dn_reconfig_nb = { .notifier_call = pci_dn_reconfig_notifier, }; -/* - * Actually initialize the phbs. - * The buswalk on this phb has not happened yet. +/** + * pci_devs_phb_init - Initialize phbs and pci devs under them. + * + * This routine walks over all phb's (pci-host bridges) on the + * system, and sets up assorted pci-related structures + * (including pci info in the device node structs) for each + * pci device found underneath. This routine runs once, + * early in the boot sequence. */ void __init pci_devs_phb_init(void) { |