6584984 "busstat -w" on DC machine causes system hang

[fred.her...@sun.com]

Author: fherard
Repository: /hg/onnv/onnv-gate
Latest revision: 2fc981dad09b6f0368d7b771a130fab904044aff
Total changesets: 1
Log message:
6584984 "busstat -w" on DC machine causes system hang

Files:
        update: usr/src/uts/sun4u/opl/io/pcicmu/pcicmu.c
        update: usr/src/uts/sun4u/opl/sys/pcicmu/pcicmu.h