drm/radeon/kms: catch atombios infinite loop and break out of it

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In somecase the atombios code might lead to infinite loop because
the GPU is in broken state, this patch track the jump history and
will abort atombios execution if we are stuck executing the same
jump for more than 1sec. Note that otherwise in some case we might
enter an infinite loop in the kernel context which is bad.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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Jerome Glisse 2010-03-02 20:37:52 +01:00 • committed by Dave Airlie

parent 338e2b1d57

commit c21b0fe6de

2 changed files with 48 additions and 13 deletions

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59

drivers/gpu/drm/radeon/atom.c

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2

drivers/gpu/drm/radeon/atom.h

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