Actions
Bug #130
openkernel: pci 0000:00:1e.0: bridge has subordinate 06 but max busn 09
Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
07/17/2017
Due date:
% Done:
0%
Estimated time:
Affected versions:
Needs backport to:
Affected hardware:
Affected OS:
Description
On some Intel devices, Linux logs the message below.
kernel: pci 0000:00:1e.0: bridge has subordinate 06 but max busn 09
Running git grep "bridge has subordinate", shows four devices.
- getac/p470
- lenovo/t500
- lenovo/t60
- lenovo/x60
kmallki commented as below in #coreboot@irc.freenode.net.
PCI: pci_scan_bus for bus 05
PCI: 05:00.0 [1180/0476] enabled
PCI: 05:00.1 [1180/0552] enabled
PCI: 05:00.2 [1180/0822] enabled
PCI: 05:00.3 [1180/0843] enabled
PCI: pci_scan_bus for bus 06 << *** secondary of 05:00.0 ***
scan_bus: scanning of bus PCI: 05:00.0 took 55 usecs
scan_bus: scanning of bus PCI: 00:1e.0 took 145 usecs
...
...
Ricoh RL5c476: Initializing.
CF Base = 0
CF boot not enabled.
PCI: 05:00.0 init finished in 4 usecs << *** too late ? ***
PCI: 05:00.1 init ...
PCI: 05:00.1 init finished in 1 usecs
PCI: 05:00.2 init ...
PCI: 05:00.2 init finished in 1 usecs
PCI: 05:00.3 init ...
PCI: 05:00.3 init finished in 1 usecs
Updated by Kyösti Mälkki over 7 years ago
Device 5:0.0 is cardbus controller with hotplug capability. We should leave some reserve of free PCI bus numbers in case the user plugs in a PCI bridge at runtime. I am not sure where max busn 9 comes from in the kernel messages.
Actions