Bug 287741 - PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug failure
Summary: PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug fai...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.5
Hardware: i386
OS: Linux
medium
medium
Target Milestone: ---
: ---
Assignee: Konrad Rzeszutek
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks: 422551 430698
TreeView+ depends on / blocked
 
Reported: 2007-09-12 15:19 UTC by Flavio Leitner
Modified: 2018-10-19 18:34 UTC (History)
2 users (show)

Fixed In Version: RHSA-2008-0665
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-07-24 19:16:18 UTC


Attachments (Terms of Use)
Backported patch from upstream to RHEL4 2.6.9-59.el (2.27 KB, patch)
2007-09-12 15:19 UTC, Flavio Leitner
no flags Details | Diff


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2008:0665 normal SHIPPED_LIVE Moderate: Updated kernel packages for Red Hat Enterprise Linux 4.7 2008-07-24 16:41:06 UTC

Description Flavio Leitner 2007-09-12 15:19:01 UTC
Description of problem:

On some systems, the ACPI bus check event can reference a bridge that is
higher in the ACPI hierarchy than the bridge immediately above the
hotplug PCI slot into which an adapter was just inserted.  The current
'acpiphp' code expects the bus check event to reference the bridge
immediately above the slot that received the adapter so the hotplug
operation can fail on these systems with the message "acpiphp_glue:
cannot get bridge info".

Version-Release number of selected component (if applicable):
kernel 2.6.9-55.ELlargesmp  SMP x86_64

How reproducible:
Always

Steps to Reproduce:
1. Vacate at least one hotplug PCIe slot and boot system.
2. Load the ACPI PCI hotplug driver:
     # modprobe acpiphp
3. Attempt to hotplug a PCIe adapter.
4. Observe the "acpiphp_glue: cannot get bridge info" log
  message and lack of power to the PCIe slot (green slot
  LED is off).


Additional info:
Patch available in upstream and also backported to RHEL4 2.6.9-59.el

Upstream patch:
From 0bbd6424c55f0ab9e7fcd6a851bc49e265259ff5 Mon Sep 17 00:00:00 2001
From: Gary Hade <garyhade@us.ibm.com>
Date: Thu, 5 Jul 2007 11:10:48 -0700
Subject: [PATCH] PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info"
PCI hotplug failure

Comment 1 Flavio Leitner 2007-09-12 15:19:01 UTC
Created attachment 193511 [details]
Backported patch from upstream to RHEL4 2.6.9-59.el

Comment 2 RHEL Product and Program Management 2007-09-12 15:34:05 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 3 Konrad Rzeszutek 2007-09-24 21:13:07 UTC
Patch tested.

Comment 4 Konrad Rzeszutek 2007-10-03 20:17:33 UTC
Patch posted on RHKL.

Comment 5 Vivek Goyal 2008-03-03 20:40:01 UTC
Committed in 68.16.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/

Comment 8 errata-xmlrpc 2008-07-24 19:16:18 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2008-0665.html


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