Leann, the patch you reference is the one that introduced the problem.
The fix can be cherry-picked from:
commit b87e81e5c6e64ae0eae3b4f61bf07bfeec856184
Author: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Tue Apr 15 14:34:49 2008 -0700
acpi: unneccessary to scan the PCI bus already scanned
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BUG: soft lockup - CPU#0 stuck for 61s!
https://bugs.launchpad.net/bugs/214814
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