diff options
| -rw-r--r-- | arch/powerpc/kernel/pci_32.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c index c6368506455f..d473634e39e3 100644 --- a/arch/powerpc/kernel/pci_32.c +++ b/arch/powerpc/kernel/pci_32.c @@ -218,16 +218,23 @@ scan_OF_pci_childs(struct device_node *parent, pci_OF_scan_iterator filter, void static struct device_node *scan_OF_for_pci_dev(struct device_node *parent, unsigned int devfn) { - struct device_node *np; + struct device_node *np, *cnp; const u32 *reg; unsigned int psize; for_each_child_of_node(parent, np) { reg = of_get_property(np, "reg", &psize); - if (reg == NULL || psize < 4) - continue; - if (((reg[0] >> 8) & 0xff) == devfn) + if (reg && psize >= 4 && ((reg[0] >> 8) & 0xff) == devfn) return np; + + /* Note: some OFs create a parent node "multifunc-device" as + * a fake root for all functions of a multi-function device, + * we go down them as well. */ + if (!strcmp(np->name, "multifunc-device")) { + cnp = scan_OF_for_pci_dev(np, devfn); + if (cnp) + return cnp; + } } return NULL; } |