drm/amdgpu: Fill out gem_object->resv

That way we can ditch our gem_prime_res_obj implementation. Since ttm
absolutely needs the right reservation object all the boilerplate is
already there and we just have to wire it up correctly.

Note that gem/prime doesn't care when we do this, as long as we do it
before the bo is registered and someone can call the handle2fd ioctl
on it.

Aside: ttm_buffer_object.ttm_resv could probably be ditched in favour
of always passing a non-NULL resv to ttm_bo_init(). At least for gem
drivers that would avoid having two of these, on in ttm_buffer_object
and the other in drm_gem_object, one just there for confusion.

Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: "Michel Dänzer" <michel.daenzer@amd.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: Evan Quan <evan.quan@amd.com>
Cc: Sonny Jiang <sonny.jiang@amd.com>
Cc: Amber Lin <Amber.Lin@amd.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Junwei Zhang <Jerry.Zhang@amd.com>
Cc: Thomas Zimmermann <contact@tzimmermann.org>
Cc: Samuel Li <Samuel.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725132655.11951-4-daniel.vetter@ffwll.ch

1 files changed, 1 insertions, 16 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index 4809d4a5d72a..02cd845e77b3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -268,20 +268,6 @@ error:
 }
 
 /**
- * amdgpu_gem_prime_res_obj - &drm_driver.gem_prime_res_obj implementation
- * @obj: GEM BO
- *
- * Returns:
- * The BO's reservation object.
- */
-struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *obj)
-{
-	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
-
-	return bo->tbo.resv;
-}
-
-/**
  * amdgpu_dma_buf_begin_cpu_access - &dma_buf_ops.begin_cpu_access implementation
  * @dma_buf: Shared DMA buffer
  * @direction: Direction of DMA transfer
@@ -339,8 +325,7 @@ const struct dma_buf_ops amdgpu_dmabuf_ops = {
  * @gobj: GEM BO
  * @flags: Flags such as DRM_CLOEXEC and DRM_RDWR.
  *
- * The main work is done by the &drm_gem_prime_export helper, which in turn
- * uses &amdgpu_gem_prime_res_obj.
+ * The main work is done by the &drm_gem_prime_export helper.
  *
  * Returns:
  * Shared DMA buffer representing the GEM BO from the given device.