Bug 216255 - qla4xxx: fix timing issue for nvram accesses
qla4xxx: fix timing issue for nvram accesses
Status: CLOSED CURRENTRELEASE
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Mike Christie
Brian Brock
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Depends On:
Blocks: 213807 216985
  Show dependency treegraph
 
Reported: 2006-11-17 21:52 EST by David Somayajulu
Modified: 2007-11-30 17:07 EST (History)
5 users (show)

See Also:
Fixed In Version: RC
Doc Type: Bug Fix
Doc Text:
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Clone Of:
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Last Closed: 2007-02-07 19:36:45 EST
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)
qla4xxx: fix timing issue for nvram accesses (2.98 KB, patch)
2006-11-17 21:52 EST, David Somayajulu
no flags Details | Diff
Cleaned up version of the previous patch (4.35 KB, patch)
2006-11-20 18:38 EST, David Somayajulu
no flags Details | Diff
rejenerated patch against root of kernel source tree (4.05 KB, patch)
2006-12-01 22:42 EST, David Somayajulu
no flags Details | Diff

  None (edit)
Description David Somayajulu 2006-11-17 21:52:53 EST
Description of problem:
For some combination of cpu/pci-slot speeds it is possible for the time 
between successive accesses to nvram registers to fall below the minimum 
threshold of 250ns. This can result in incorrect data.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:
Comment 1 David Somayajulu 2006-11-17 21:52:53 EST
Created attachment 141548 [details]
qla4xxx: fix timing issue for nvram accesses
Comment 2 David Somayajulu 2006-11-20 18:38:10 EST
Created attachment 141709 [details]
Cleaned up version of the previous patch

Cleaned up the previously posted patch and fixed a couple of holes.
Comment 3 David Somayajulu 2006-12-01 22:42:47 EST
Created attachment 142650 [details]
rejenerated patch against root of kernel source tree

rejenerated patch against root of kernel source tree
Comment 6 RHEL Product and Program Management 2006-12-07 13:06:35 EST
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 7 Jay Turner 2006-12-13 22:24:03 EST
QE ack for RHEL5.
Comment 8 Tom Coughlan 2007-01-11 10:32:18 EST
This went in as part of the 213807 fix. That BZ is MODIFIED, so
I am setting this likewise. 
Comment 9 RHEL Product and Program Management 2007-02-07 19:36:45 EST
A package has been built which should help the problem described in 
this bug report. This report is therefore being closed with a resolution 
of CURRENTRELEASE. You may reopen this bug report if the solution does 
not work for you.

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