radeon: Use fences to gate entry to reclocking on <r600
GUI idle interrupts don't seem to work terribly well on r500 and earlier, so let's use a fence instead. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -76,6 +76,14 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
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msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));
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rdev->irq.gui_idle = false;
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radeon_irq_set(rdev);
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} else {
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struct radeon_fence *fence;
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radeon_ring_alloc(rdev, 64);
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radeon_fence_create(rdev, &fence);
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radeon_fence_emit(rdev, fence);
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radeon_ring_commit(rdev);
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radeon_fence_wait(fence, false);
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radeon_fence_unref(&fence);
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}
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radeon_unmap_vram_bos(rdev);
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