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path: root/drivers/gpu/drm/nouveau/nouveau_ttm.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_ttm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_ttm.c30
1 files changed, 1 insertions, 29 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 187eb84e4da..c385d50f041 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -28,45 +28,17 @@
28 28
29#include "nouveau_drv.h" 29#include "nouveau_drv.h"
30 30
31static struct vm_operations_struct nouveau_ttm_vm_ops;
32static const struct vm_operations_struct *ttm_vm_ops;
33
34static int
35nouveau_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
36{
37 struct ttm_buffer_object *bo = vma->vm_private_data;
38 int ret;
39
40 if (unlikely(bo == NULL))
41 return VM_FAULT_NOPAGE;
42
43 ret = ttm_vm_ops->fault(vma, vmf);
44 return ret;
45}
46
47int 31int
48nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) 32nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
49{ 33{
50 struct drm_file *file_priv = filp->private_data; 34 struct drm_file *file_priv = filp->private_data;
51 struct drm_nouveau_private *dev_priv = 35 struct drm_nouveau_private *dev_priv =
52 file_priv->minor->dev->dev_private; 36 file_priv->minor->dev->dev_private;
53 int ret;
54 37
55 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) 38 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
56 return drm_mmap(filp, vma); 39 return drm_mmap(filp, vma);
57 40
58 ret = ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev); 41 return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev);
59 if (unlikely(ret != 0))
60 return ret;
61
62 if (unlikely(ttm_vm_ops == NULL)) {
63 ttm_vm_ops = vma->vm_ops;
64 nouveau_ttm_vm_ops = *ttm_vm_ops;
65 nouveau_ttm_vm_ops.fault = &nouveau_ttm_fault;
66 }
67
68 vma->vm_ops = &nouveau_ttm_vm_ops;
69 return 0;
70} 42}
71 43
72static int 44static int