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Diffstat (limited to 'include/drm/drm_drv.h')
-rw-r--r--include/drm/drm_drv.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 3199ef70c007..35af23f5fa0d 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -471,6 +471,8 @@ struct drm_driver {
* @gem_prime_export:
*
* export GEM -> dmabuf
+ *
+ * This defaults to drm_gem_prime_export() if not set.
*/
struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
struct drm_gem_object *obj, int flags);
@@ -478,6 +480,8 @@ struct drm_driver {
* @gem_prime_import:
*
* import dmabuf -> GEM
+ *
+ * This defaults to drm_gem_prime_import() if not set.
*/
struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
struct dma_buf *dma_buf);
@@ -523,8 +527,10 @@ struct drm_driver {
* @dumb_map_offset:
*
* Allocate an offset in the drm device node's address space to be able to
- * memory map a dumb buffer. GEM-based drivers must use
- * drm_gem_create_mmap_offset() to implement this.
+ * memory map a dumb buffer.
+ *
+ * The default implementation is drm_gem_create_mmap_offset(). GEM based
+ * drivers must not overwrite this.
*
* Called by the user via ioctl.
*
@@ -544,6 +550,9 @@ struct drm_driver {
*
* Called by the user via ioctl.
*
+ * The default implementation is drm_gem_dumb_destroy(). GEM based drivers
+ * must not overwrite this.
+ *
* Returns:
*
* Zero on success, negative errno on failure.
@@ -621,7 +630,6 @@ void drm_dev_unregister(struct drm_device *dev);
void drm_dev_get(struct drm_device *dev);
void drm_dev_put(struct drm_device *dev);
-void drm_dev_unref(struct drm_device *dev);
void drm_put_dev(struct drm_device *dev);
bool drm_dev_enter(struct drm_device *dev, int *idx);
void drm_dev_exit(int idx);