Acquire the reservation lock directly in GEM pin callback. Same for
unpin. Prepares for further changes.
Dma-buf locking semantics require callers to hold the buffer's
reservation lock when invoking the pin and unpin callbacks. Prepare
nouveau accordingly by pushing locking out of the implementation. A
follow-up patch will fix locking for all GEM code at once.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_prime.c | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index 1b2ff0c40fc1c..774f9bd031102 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -86,21 +86,32 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
int nouveau_gem_prime_pin(struct drm_gem_object *obj)
{
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ struct ttm_buffer_object *bo = &nvbo->bo;
int ret;
- /* pin buffer into GTT */
- ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
+ ret = ttm_bo_reserve(bo, false, false, NULL);
if (ret)
return -EINVAL;
+ /* pin buffer into GTT */
+ ret = nouveau_bo_pin_locked(nvbo, NOUVEAU_GEM_DOMAIN_GART, false);
+ if (ret)
+ ret = -EINVAL;
+ ttm_bo_unreserve(bo);
- return 0;
+ return ret;
}
void nouveau_gem_prime_unpin(struct drm_gem_object *obj)
{
struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+ struct ttm_buffer_object *bo = &nvbo->bo;
+ int ret;
- nouveau_bo_unpin(nvbo);
+ ret = ttm_bo_reserve(bo, false, false, NULL);
+ if (ret)
+ return;
+ nouveau_bo_unpin_locked(nvbo);
+ ttm_bo_unreserve(bo);
}
struct dma_buf *nouveau_gem_prime_export(struct drm_gem_object *gobj,
--
2.43.2