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| author |   Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-08-19 13:18:07 -0300 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-08-23 14:52:32 +0200 |
| commit | 215733fadb87709e91b3a622d786865292c9ab11 (patch) | |
| tree | aff961af369cae544c2d9e50415b8f04faad1d75 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | drm/i915: drop WaMbcDriverBootEnable workaround (diff) | |
| download | linux-dev-215733fadb87709e91b3a622d786865292c9ab11.tar.xz linux-dev-215733fadb87709e91b3a622d786865292c9ab11.zip | |
drm/i915: grab force_wake when restoring LCPLL
If LCPLL is disabled, there's a chance we might be in package C8 state
or deeper, and we'll get a hard hang when restoring LCPLL (also, a red
led lights up on my motherboard). So grab the force_wake, which will
get us out of RC6 and, as a consequence, out of PC8+ (since we need
RC6 to get into PC8+).
Note: Discussions with hw designers are still ongoing what exactly
goes boom here. But I think we can go ahead and just merge this little
hack for now until it's clear what we actually need.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Add small note about the current state of the discussion
around this hack.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions