drm/radeon: fix fence value access

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It is possible that radeon_fence_process is called
after writeback is disabled for suspend, leading
to an invalid read of register 0x0.

This fixes a problem for me where the fence value
is temporary incremented by 0x100000000 on
suspend/resume.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

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Christian König 2012-07-09 10:52:39 +02:00

parent 07a713305a

commit bf66625e02

1 changed files with 8 additions and 6 deletions

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drivers/gpu/drm/radeon/radeon_fence.c

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