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radeon: Unmap vram pages when reclocking

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Touching vram while the card is reclocking can lead to lockups. Unmap
any pages that could be touched by the CPU and block any accesses to
vram until the reclocking is complete.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Matthew Garrett 2010-04-26 15:52:20 -04:00 • committed by Dave Airlie
parent 2aba631c00
commit 5876dd249e
5 changed files with 39 additions and 1 deletions
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1
drivers/gpu/drm/radeon/radeon_device.c
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@ -599,6 +599,7 @@ int radeon_device_init(struct radeon_device *rdev,
spin_lock_init(&rdev->ih.lock);
mutex_init(&rdev->gem.mutex);
mutex_init(&rdev->pm.mutex);
mutex_init(&rdev->vram_mutex);
rwlock_init(&rdev->fence_drv.lock);
INIT_LIST_HEAD(&rdev->gem.objects);
init_waitqueue_head(&rdev->irq.vblank_queue);