@@ -1190,20 +1190,16 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev,
(is_cardbus ? "PCI CardBus %04x:%02x" : "PCI Bus %04x:%02x"),
pci_domain_nr(bus), child->number);
- /* Has only triggered on CardBus, fixup is in yenta_socket */
+ /* Check that all devices are accessible */
while (bus->parent) {
if ((child->busn_res.end > bus->busn_res.end) ||
(child->number > bus->busn_res.end) ||
(child->number < bus->number) ||
(child->busn_res.end < bus->number)) {
- dev_info(&child->dev, "%pR %s hidden behind%s bridge %s %pR\n",
- &child->busn_res,
- (bus->number > child->busn_res.end &&
- bus->busn_res.end < child->number) ?
- "wholly" : "partially",
- bus->self->transparent ? " transparent" : "",
- dev_name(&bus->dev),
- &bus->busn_res);
+ dev_info(&dev->dev,
+ "devices behind bridge are unusable, because %pR cannot be assigned for them\n",
+ &child->busn_res);
+ break;
}
bus = bus->parent;
}
There is a sanity checker in the end of pci_scan_child_bus_extend() that tries to detect badly configured bridges. For example given the below topology: +-1b.0-[01-39]----00.0-[02-3a]--+-00.0-[03]----00.0 +-01.0-[04-39]-- \-02.0-[3a]----00.0 The sanity checker notices this and logs following messages: pci_bus 0000:3a: [bus 3a] partially hidden behind bridge 0000:02 [bus 02-39] pci_bus 0000:3a: [bus 3a] partially hidden behind bridge 0000:01 [bus 01-39] This is not really helpful to users and the information above is not even correct (0000:02 is a bus not bridge). Make this a bit more understandable by changing the sanity checker to log following message in place of the above two messages: pci 0000:02:02.0: devices behind bridge are unusable, because [bus 3a] cannot be assigned for them While there update the comment on top of the sanity checker block to make it clear that it is not only restricted to CardBus. Suggested-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/pci/probe.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-)