Currently the drm_prime mmap fallback uses a mock struct file to provide the file pointer into the backend mmap routine. Now that we can create fully fledged anonymous struct file around the drm device, put it to use.
Signed-off-by: Chris Wilson chris@chris-wilson.co.uk --- drivers/gpu/drm/drm_prime.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 0814211b0f3f..5faa63713ec8 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -709,8 +709,7 @@ EXPORT_SYMBOL(drm_gem_dmabuf_vunmap); */ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { - struct drm_file *priv; - struct file *fil; + struct file *file; int ret;
if (obj->funcs && obj->funcs->mmap) { @@ -722,30 +721,21 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) return 0; }
- priv = kzalloc(sizeof(*priv), GFP_KERNEL); - fil = kzalloc(sizeof(*fil), GFP_KERNEL); - if (!priv || !fil) { - ret = -ENOMEM; - goto out; - } + file = anon_drm_getfile(obj->dev->primary, O_RDWR); + if (IS_ERR(file)) + return PTR_ERR(file);
- /* Used by drm_gem_mmap() to lookup the GEM object */ - priv->minor = obj->dev->primary; - fil->private_data = priv; - - ret = drm_vma_node_allow(&obj->vma_node, priv); + ret = drm_vma_node_allow(&obj->vma_node, file->private_data); if (ret) goto out;
vma->vm_pgoff += drm_vma_node_start(&obj->vma_node);
- ret = obj->dev->driver->fops->mmap(fil, vma); + ret = file->f_op->mmap(file, vma);
- drm_vma_node_revoke(&obj->vma_node, priv); + drm_vma_node_revoke(&obj->vma_node, file->private_data); out: - kfree(priv); - kfree(fil); - + fput(file); return ret; } EXPORT_SYMBOL(drm_gem_prime_mmap);