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drm: add unpin function to prime helpers

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Prevents buffers from being pinned forever.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Maarten Lankhorst
2013-04-09 09:18:44 +02:00
committed by Dave Airlie
parent 328a4719b6
commit 102d6dba30
2 changed files with 12 additions and 2 deletions
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include/drm/drmP.h
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@@ -930,6 +930,7 @@ struct drm_driver {
struct dma_buf *dma_buf);
/* low-level interface used by drm_gem_prime_{import,export} */
int (*gem_prime_pin)(struct drm_gem_object *obj);
void (*gem_prime_unpin)(struct drm_gem_object *obj);
struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
struct drm_gem_object *(*gem_prime_import_sg_table)(
struct drm_device *dev, size_t size,