Red Hat Bugzilla – Bug 439109
[Broadcom 4.7 bug] HT1000 chip based systems getting blacklisted for msi
Last modified: 2014-06-29 19:00:07 EDT
Description of problem:
Following piece of code in quirks.c of RHEL4.6 code is disabling msi on all
HT1000 systems. This section of code has subsequently been refined in the later
kernels and those changes needs to be pulled into future releases.
/* The Serverworks PCI-X chipset does not support MSI. We cannot easily rely
* on setting PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
* some other busses controlled by the chipset even if Linux is not aware of it.
* Instead of setting the flag on all busses in the machine, simply disable MSI
static void __init quirk_svw_msi(struct pci_dev *dev)
pci_msi_quirk = 1;
printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
Version-Release number of selected component (if applicable):
Run RHEL4.6 on a HT1000 based platform
Steps to Reproduce:
Created attachment 301718 [details]
rhel4 test patch
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
Committed in 68.33.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/
~ Attention: ~ Feedback requested regarding this **High Priority** bug.
A fix for this issue should be included in the latest packages contained in
RHEL4.7-Snapshot1--available now on partners.redhat.com.
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Installed RHEL4.7-Snapshot1 on a HT1000 system. Used a Gigabit network card and
confirmed that MSI is now working on HT1000 systems.
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.
Partners, I would like to thank you all for your participation in assuring the
quality of this RHEL 4.7 Update Release. My hat's off to you all. Thanks.