drm: move pinning/unpinning to buffer attach

[profile/mobile/platform/kernel/linux-3.10-sc7730.git] / drivers / gpu / drm / drm_prime.c

diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 5b7b911..4eb519d 100644 (file)
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -64,6 +64,29 @@ struct drm_prime_member {
 };
 static int drm_prime_add_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle);
 
+static int drm_gem_map_attach(struct dma_buf *dma_buf,
+                             struct device *target_dev,
+                             struct dma_buf_attachment *attach)
+{
+       struct drm_gem_object *obj = dma_buf->priv;
+       struct drm_device *dev = obj->dev;
+
+       if (!dev->driver->gem_prime_pin)
+               return 0;
+
+       return dev->driver->gem_prime_pin(obj);
+}
+
+static void drm_gem_map_detach(struct dma_buf *dma_buf,
+                              struct dma_buf_attachment *attach)
+{
+       struct drm_gem_object *obj = dma_buf->priv;
+       struct drm_device *dev = obj->dev;
+
+       if (dev->driver->gem_prime_unpin)
+               dev->driver->gem_prime_unpin(obj);
+}
+
 static struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
                enum dma_data_direction dir)
 {
@@ -146,6 +169,8 @@ static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
 }
 
 static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
+       .attach = drm_gem_map_attach,
+       .detach = drm_gem_map_detach,
        .map_dma_buf = drm_gem_map_dma_buf,
        .unmap_dma_buf = drm_gem_unmap_dma_buf,
        .release = drm_gem_dmabuf_release,
@@ -185,11 +210,6 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
 struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
                                     struct drm_gem_object *obj, int flags)
 {
-       if (dev->driver->gem_prime_pin) {
-               int ret = dev->driver->gem_prime_pin(obj);
-               if (ret)
-                       return ERR_PTR(ret);
-       }
        return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, flags);
 }
 EXPORT_SYMBOL(drm_gem_prime_export);