[Bug 227388] [cpufreq] [patch] Most newer Pentium M ULV frequency tables doesn't finished correctly

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227388

            Bug ID: 227388
           Summary: [cpufreq] [patch] Most newer Pentium M ULV frequency
                    tables doesn't finished correctly
           Product: Base System
           Version: 11.1-STABLE
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: xdelta at meta.ua

Created attachment 192359
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=192359&action=edit
est.c patch

I've installed FreeBSD 11.1 onto Fujitsu Siemens P7120 with Pentium M 753 ULV
1.2GHz inside. In result: system refused to run powerd, sometime system crashes
(mostly after executing "reboot" or "sysctl -a"), messages "tsc_levels_changed:
no max freq found" and "cpufreq: need to increase CF_MAX_LEVELS" are appeared
on console. "sysctl dev.est.0.freq_settings" output:

dev.est.0.freq_settings: 1200/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1 1200/-1
11
00/-1 1000/-1 900/-1 800/-1 600/-1 1200/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1
1200/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1 1200/-1 1100/-1 1000/-1 900/-1
800/
-1 600/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1 1100/-1 1000/-1 900/-1 800/-1
600
/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1
11
00/-1 1000/-1 900/-1 800/-1 600/-1 1100/-1 1000/-1 900/-1 800/-1 600/-1 1100/-1
1000/-1 900/-1 800/-1 600/-1

As turned out, some frequency tables, including one for "Pentium M 753 ULV
1.2GHz" have no finalization line "FREQ_INFO(   0,    0, 1)".

After applying patch - all mentioned symptomps are disappeared.

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