drm/i915: Add locking to psr code

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It's not really optional to have locking ...

The ugly part is how much locking the psr work needs since it has to
recheck everything. Which is way too much. But we need to ditch the
psr work in it's current form anyway and implement proper frontbuffer
tracking.

The other nasty bit that had to go was the delayed work cancle in
psr_exit. Which means a bunch of races just became a bit more likely,
but mea culpa.

v2: Fixup HAS_PSR checks, resulting in uninitialized mutex issues.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Daniel Vetter 2014-07-11 10:30:15 -07:00

parent 109fc2adec

commit f0355c4a9e

2 changed files with 32 additions and 7 deletions

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1

drivers/gpu/drm/i915/i915_drv.h

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38

drivers/gpu/drm/i915/intel_dp.c

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