drm/i915: Drop get/put_pages for scratch page
While discussing/reviewing __GFP_MOVEABLE behaviour and interactions with our various page allocations on irc Chris brought up that the scratch page isn't allocated as moveable, but we still grab/put a reference to lock it in place. Which is unecessary. So drop that. Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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@ -1752,7 +1752,6 @@ static int setup_scratch_page(struct drm_device *dev)
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page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
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if (page == NULL)
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return -ENOMEM;
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get_page(page);
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set_pages_uc(page, 1);
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#ifdef CONFIG_INTEL_IOMMU
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@ -1777,7 +1776,6 @@ static void teardown_scratch_page(struct drm_device *dev)
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set_pages_wb(page, 1);
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pci_unmap_page(dev->pdev, dev_priv->gtt.base.scratch.addr,
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PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
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put_page(page);
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__free_page(page);
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}
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