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authorDave Airlie <airlied@redhat.com>2012-05-20 17:31:16 +0100
committerDave Airlie <airlied@redhat.com>2012-05-23 10:46:03 +0100
commit0ff926c7d4f06f9703226dc09acad17e86f169d6 (patch)
treec0f4036c17f0fe5944ca56ef519774f0f9b3ad45 /drivers/gpu/drm/drm_gem.c
parent51ab7ba2673758561074184795bba5bac780a038 (diff)
downloadblackbird-op-linux-0ff926c7d4f06f9703226dc09acad17e86f169d6.tar.gz
blackbird-op-linux-0ff926c7d4f06f9703226dc09acad17e86f169d6.zip
drm/prime: add exported buffers to current fprivs imported buffer list (v2)
If userspace attempts to import a buffer it exported on the same device, we need to return the same GEM handle for it, not a new handle pointing at the same GEM object. v2: move removals into a single fn, no need to set to NULL. (Chris Wilson) Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
-rw-r--r--drivers/gpu/drm/drm_gem.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 72ba0757feaa..d58e69da1fb5 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -201,6 +201,19 @@ free:
}
EXPORT_SYMBOL(drm_gem_object_alloc);
+static void
+drm_gem_remove_prime_handles(struct drm_gem_object *obj, struct drm_file *filp)
+{
+ if (obj->import_attach) {
+ drm_prime_remove_imported_buf_handle(&filp->prime,
+ obj->import_attach->dmabuf);
+ }
+ if (obj->export_dma_buf) {
+ drm_prime_remove_imported_buf_handle(&filp->prime,
+ obj->export_dma_buf);
+ }
+}
+
/**
* Removes the mapping from handle to filp for this object.
*/
@@ -233,9 +246,7 @@ drm_gem_handle_delete(struct drm_file *filp, u32 handle)
idr_remove(&filp->object_idr, handle);
spin_unlock(&filp->table_lock);
- if (obj->import_attach)
- drm_prime_remove_imported_buf_handle(&filp->prime,
- obj->import_attach->dmabuf);
+ drm_gem_remove_prime_handles(obj, filp);
if (dev->driver->gem_close_object)
dev->driver->gem_close_object(obj, filp);
@@ -530,9 +541,7 @@ drm_gem_object_release_handle(int id, void *ptr, void *data)
struct drm_gem_object *obj = ptr;
struct drm_device *dev = obj->dev;
- if (obj->import_attach)
- drm_prime_remove_imported_buf_handle(&file_priv->prime,
- obj->import_attach->dmabuf);
+ drm_gem_remove_prime_handles(obj, file_priv);
if (dev->driver->gem_close_object)
dev->driver->gem_close_object(obj, file_priv);
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