diff options
| author | Matthew Garrett <[email protected]> | 2010-07-20 13:52:00 -0400 |
|---|---|---|
| committer | Dave Jones <[email protected]> | 2010-08-03 13:47:02 -0400 |
| commit | 5d77b85458f656923b85291a4ff56ed44859ed52 (patch) | |
| tree | 2c6486e767ec0007a01db589b8eec05d90d148a0 /tools/perf/util/trace-event-scripting.c | |
| parent | cad70a6ae5aaef4641a3efdfd536c30f13891afe (diff) | |
[CPUFREQ] pcc driver should check for pcch method before calling _OSC
The pcc specification documents an _OSC method that's incompatible with the
one defined as part of the ACPI spec. This shouldn't be a problem as both
are supposed to be guarded with a UUID. Unfortunately approximately nobody
(including HP, who wrote this spec) properly check the UUID on entry to the
_OSC call. Right now this could result in surprising behaviour if the pcc
driver performs an _OSC call on a machine that doesn't implement the pcc
specification. Check whether the PCCH method exists first in order to reduce
this probability.
Signed-off-by: Matthew Garrett <[email protected]>
Cc: Naga Chumbalkar <[email protected]>
Signed-off-by: Dave Jones <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions