diff options
Diffstat (limited to 'arch/sparc/kernel/pci.c')
| -rw-r--r-- | arch/sparc/kernel/pci.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index da24fb6deb03..cc4c31e5185e 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -489,6 +489,17 @@ static void of_scan_pci_bridge(struct pci_pbm_info *pbm, size = GET_64BIT(ranges, 6); if (flags == 0 || size == 0) continue; + + /* On PCI-Express systems, PCI bridges that have no devices downstream + * have a bogus size value where the first 32-bit cell is 0xffffffff. + * This results in a bogus range where start + size overflows. + * + * Just skip these otherwise the kernel will complain when the resource + * tries to be claimed. + */ + if (size >> 32 == 0xffffffff) + continue; + if (flags & IORESOURCE_IO) { res = bus->resource[0]; if (res->flags) { |